1986 F-150 XLT Lariat (351W) Cold Start Choke

Adjusting the idle speed on your ’86 F150 with a 351W is a straightforward task, but you’ll want to make sure the engine is fully warmed up before making any changes. Here’s how to do it, along with some guidelines for what the idle speed should be.

Steps to Adjust Idle Speed

1. Warm Up the Engine: Start your truck and let it run until it reaches normal operating temperature. This ensures the choke is fully disengaged and the engine is stable.

2. Locate the Idle Speed Screw: On a Motorcraft 2150 carburetor, the idle speed adjustment screw is located on the throttle linkage side of the carb. It’s usually a small screw that contacts the throttle lever.

3. Set the Idle Speed:

   • Use a flathead screwdriver to turn the idle speed screw.
   • Clockwise to increase RPM.
   • Counterclockwise to decrease RPM.

4. Check the RPM:

   • Connect a tachometer if your truck doesn’t have a built-in one.
   • For a 351W, the typical idle speed should be around 650–750 RPM with an automatic transmission in "Drive" and around 700–800 RPM for a manual transmission in neutral.

5. Fine-Tuning: Make small adjustments and give the engine a moment to stabilize before making further changes. You want the engine to idle smoothly without stumbling or racing.

Additional Tips

• Vacuum Leaks: Ensure there are no vacuum leaks that might affect idle.

• Idle Mixture: If idle speed adjustments aren’t smoothing things out, you might need to tweak the idle mixture screws. These are typically found on the front of the carburetor. Adjust them equally for best results.

• Service Manual: Always good to have a repair manual on hand for reference, especially for precise specs and diagrams.

Adjusting your idle correctly can make a big difference in how your Bullnose runs, especially at stoplights and in traffic. If you need further help, the Bullnose Ford subreddit can be a great resource, and there might be a related video on the Bullnose Garage channel. Enjoy tinkering!

Warming up your ’86 F150 with a 351W should take around 5 to 10 minutes, depending on the ambient temperature. During this time, the RPM will gradually drop as the choke opens and the engine reaches operating temperature.

Warm-Up Process

1. Initial Start: When you first start the engine, the RPM will be higher due to the fast idle cam engaging. This is normal and helps the engine reach temperature more quickly.

2. RPM Drop: As the engine warms, the choke coil heats up (either electrically or via heat from the engine) and gradually opens the choke plate. This should cause the fast idle cam to step down, reducing RPM.

3. Final Idle: Once fully warmed up, the RPM should settle to the proper idle speed — around 650–750 RPM for automatics, 700–800 RPM for manuals.

Factors Affecting Warm-Up Time

• Outside Temperature: Colder weather can extend warm-up time.
• Choke Adjustment: If the choke isn’t adjusted correctly, it might take longer for the RPM to drop.
• Engine Condition: A well-maintained engine will warm up more efficiently.

If the RPM isn’t dropping as expected or takes longer than usual, it might be worth checking the choke function and looking for any issues with the fast idle cam or linkage. If you’re having ongoing problems, there could be a helpful video on the Bullnose Garage channel or discussions on the Bullnose Ford subreddit.

For your ’86 F150 with a 351W, the proper warm idle speed should be:

• Automatic Transmission: 650–750 RPM
• Manual Transmission: 700–800 RPM

These settings ensure smooth operation without stalling or excessive engine strain. If your idle is outside these ranges, consider adjusting the idle speed screw on the carburetor as mentioned earlier. Make sure the engine is fully warmed up before making adjustments for accuracy. If you need more tips, you might find useful discussions on the Bullnose Ford subreddit or a detailed video on the Bullnose Garage channel.

At startup, with the fast idle cam engaged, your 351W’s RPM will be higher to help with warming up. Typically, it should be around 1,200 to 1,500 RPM. This allows the engine to warm up efficiently before settling to its normal idle speed once the choke fully opens. If it seems off, checking the fast idle cam adjustment can help.

No worries! If your truck doesn’t have a built-in tachometer, you can use a few methods to check the RPM:

Portable Tachometer

• Handheld Tachometer: These devices clip onto a spark plug wire and give you a digital readout of the engine RPM. They’re straightforward and reasonably accurate.

Timing Light with Tach Feature

• Advanced Timing Light: Some timing lights come with a built-in tachometer function. You connect it to the battery and a spark plug wire to check RPM while adjusting timing.

Smartphone Apps

• RPM Apps: Some apps claim to measure RPM using sound, but they may not be very accurate. It’s better to rely on physical tools.

Pro Tip

• If you’re often tinkering with your truck, investing in a basic tachometer or a multifunction timing light can be really handy.

Once you’ve got your tool, run the engine, and use the device to check RPM, especially while making adjustments. If you need more guidance, the Bullnose Ford subreddit or the Bullnose Garage channel might have some additional insights.

For your 1986 F150 with a 351W engine, you’ll need about 6 quarts of oil, including the oil filter change. Here’s a quick rundown:

Oil Change Essentials

1. Oil Type: Typically, 10W-30 or 10W-40 is recommended, but check your environment and consult the owner’s manual for specifics.

2. Oil Filter: Always use a good quality oil filter to ensure optimal filtration.

3. Procedure:

   • Drain the old oil completely.
   • Replace the oil filter.
   • Add new oil, starting with about 5 quarts, then check the dipstick to avoid overfilling.
   • Top up as needed to reach the correct level.

Checking the manual or a reliable service guide ensures you’re using the right specs. If you’re unsure, resources like the Bullnose Ford subreddit can be quite useful.

In Knoxville, TN, where you experience a range of temperatures, 10W-30 is a solid choice for your 1986 F150 with a 351W. It provides good protection in both cold starts and warm conditions.

Why 10W-30?

• Cold Start Protection: The "10W" rating ensures the oil flows well at lower temperatures, which is vital on cooler mornings.
• Operating Temperature: The "30" ensures it maintains viscosity at higher engine temperatures, providing adequate protection during the warm months.

Always make sure to check for any specific recommendations in your owner’s manual or consider consulting with other Bullnose enthusiasts in the area via the Bullnose Ford subreddit.

Using synthetic oil in your 1986 F150 with a 351W can offer some benefits, but it’s not strictly necessary. Here’s what to consider:

Benefits of Synthetic Oil

1. Better Temperature Stability: Synthetic oil handles extreme temperatures better, which can be helpful in varied climates.
2. Improved Lubrication: It provides more consistent lubrication, reducing engine wear over time.
3. Longer Change Intervals: You can often go longer between oil changes, though always consult the oil manufacturer’s recommendations.

Considerations for Older Engines

• Seals and Gaskets: Older engines may have seals and gaskets that are more compatible with conventional oils. Sometimes, switching can lead to leaks.
• Cost: Synthetic oil is generally more expensive.

Recommendation

If your engine is in good condition and doesn’t have any significant leaks, synthetic could be a great choice. However, if you’re happy with how your truck runs on conventional oil, there’s no pressing need to switch.

Always check for any specific guidance in your owner’s manual or seek advice from fellow Bullnose enthusiasts, like those on the Bullnose Ford subreddit.

For your 1986 F150 with a 351W, you’ll need about 16 to 20 quarts of coolant to fill the system completely. This includes the radiator and the engine block.

Coolant Tips

1. Mixture: Use a 50/50 mix of antifreeze and distilled water. This provides optimal protection against freezing and boiling.

2. Flush System: If you’re doing a full change, it’s a good idea to flush the system to remove any debris or old coolant.

3. Check for Leaks: Inspect hoses and connections for any potential leaks before refilling.

Getting it right ensures your engine keeps cool and runs efficiently. If you need more guidance, the Bullnose Ford subreddit or the Bullnose Garage channel can be good resources.

Here’s a breakdown for both power steering and transmission fluid for your 1986 F150:

Power Steering Fluid

• Capacity: Typically around 2 quarts. It’s a good idea to have a bit extra on hand in case of spills or top-offs.
• Type: Use a power steering fluid specified for Ford vehicles of this era.

Transmission Fluid

• Automatic Transmission (C6 or AOD):

  • Capacity: About 12 to 14 quarts for a complete system fill, including the torque converter.
  • Type: Use Mercon or Dexron II/III transmission fluid.

• Manual Transmission:

  • Capacity: This can vary, but generally around 2 to 3 quarts.
  • Type: Use the fluid specified for your transmission type, often a gear oil like 80W-90.

Tips

• Check Levels: Always check fluid levels after filling to ensure everything is at the correct level.
• Leaks: Inspect for leaks before and after filling to avoid unnecessary fluid loss.

Having a service manual handy can be really helpful for precise specifications. For more detailed advice, check out the Bullnose Ford subreddit.

Yes, the windshield from a 1990 F150 will fit your 1986 F150. The 1980-1996 Ford F-Series trucks share the same cab structure, which includes the windshield dimensions. Just make sure the replacement windshield is in good condition and properly installed to avoid leaks or fitment issues. If you need more detailed installation tips, checking the Bullnose Ford subreddit can be helpful.

Yes, if your truck struggles to go into first gear, a low idle could be a factor, especially in a manual transmission. Here’s why and what to consider:

Possible Causes

1. Low Idle Speed:

   • A low idle can cause insufficient power to engage gears smoothly, leading to difficulty shifting.

2. Clutch Issues:

   • A dragging clutch or improper adjustment can also cause shifting problems.

3. Transmission Fluid:

   • Low or old transmission fluid can affect gear engagement.

4. Linkage or Cable:

   • Worn or misadjusted linkage can cause issues with gear selection.

What to Do

• Check Idle Speed: Make sure your engine idles at the recommended RPM. For a 351W, it’s typically around 600-700 RPM in neutral.

• Inspect Clutch: Check clutch pedal adjustment and ensure it fully disengages.

• Change Fluid: Make sure your transmission fluid is at the correct level and in good condition.

• Inspect Linkage: Look for signs of wear or misalignment in the shift linkage.

Addressing these areas can help you resolve the issue. If you need more in-depth guidance, the Bullnose Ford subreddit or Bullnose Garage channel might have more resources.

Ah, got it. If your truck has an automatic transmission and struggles to shift into first gear, here’s what to consider:

Possible Causes

1. Low Idle:

   • A low idle could still affect the transmission performance, but it’s less likely to be the primary cause in an automatic.

2. Transmission Fluid:

   • Low or dirty transmission fluid can lead to shifting issues. Ensure the fluid level is correct and the fluid is clean.

3. Vacuum Modulator:

   • Some automatics use a vacuum modulator to control shift timing. A leak or malfunction here can cause problems.

4. Throttle Position Sensor (TPS):

   • If your model has a TPS, a faulty one can affect shift quality and timing.

5. Internal Transmission Issues:

   • Worn bands or clutches inside the transmission could also be the culprit.

What to Do

• Check Fluid: Verify fluid level and condition. Refill or replace as needed.

• Inspect Vacuum Lines: Look for any leaks or damage in vacuum lines connected to the transmission.

• Test TPS: Ensure it’s functioning properly if your truck is equipped with one.

• Professional Diagnostic: If the basics don’t solve it, consider having a transmission specialist take a look.

Tackling these areas should help pinpoint the issue. For further insights, the Bullnose Ford subreddit can be a valuable resource.

Doing a coolant flush on your Bullnose Ford is a great maintenance task. Here’s a step-by-step guide:

Tools and Materials

• Drain pan
• Funnel
• Garden hose
• New coolant (check your manual for type, usually a 50/50 mix)
• Distilled water (for the final fill)
• Screwdriver or pliers

Steps

1. Safety First:

   • Make sure the engine is cool. Hot coolant can cause burns.

2. Drain Old Coolant:

   • Place a drain pan under the radiator.
   • Open the radiator drain plug (petcock) or remove the lower radiator hose to drain the old coolant.

3. Flush System:

   • Close the drain plug.
   • Fill the radiator with plain water.
   • Start the engine and let it reach operating temperature with the heater on high, allowing the water to circulate.
   • Turn off the engine and let it cool.
   • Drain the water by reopening the drain plug.

4. Repeat Flushing:

   • Repeat the flush with plain water until the draining water runs clear. Typically, two to three times is sufficient.

5. Fill with Coolant:

   • After the final drain, close the drain plug.
   • Fill the radiator with a 50/50 mix of new coolant and distilled water.
   • Run the engine with the radiator cap off until it reaches operating temperature, adding coolant as needed until full.

6. Bleed the System:

   • Let the engine run with the heater on to remove air pockets.
   • Top off the radiator as needed and replace the cap.

7. Check for Leaks:

   • Inspect for any leaks around hoses and the radiator.

Pro Tips

• Dispose Properly: Dispose of the old coolant according to local regulations.
• Use a Funnel: It helps to prevent spills and air bubbles.
• Check the Manual: Ensure you’re using the correct type of coolant for your engine.

This should keep your cooling system in top shape. If you need more visuals, there may be a related video on the Bullnose Garage channel worth checking out.

Flushing the transmission fluid in your Bullnose Ford is a great way to keep it running smoothly. Here’s how to do it:

Tools and Materials

• Drain pan
• Socket set
• Funnel
• New transmission fluid (Mercon or Dexron II/III for automatics)
• Gasket or sealant (if replacing the pan gasket)
• Torque wrench
• Rags or shop towels

Steps

1. Safety First:

   • Park on a level surface and set the parking brake.
   • Allow the transmission to cool down if it’s been running.

2. Drain the Old Fluid:

   • Place a drain pan beneath the transmission pan.
   • Remove the transmission pan bolts, starting at one corner to allow controlled drainage.
   • Carefully lower the pan as the fluid drains.

3. Inspect and Clean:

   • Clean the pan and magnets. Look for metal shavings, which can indicate wear.
   • Replace the pan gasket if necessary.

4. Replace the Filter:

   • Remove the old transmission filter.
   • Install the new filter, ensuring it’s properly seated.

5. Refit the Pan:

   • Reattach the pan with the new gasket. Torque the bolts to specification (check your manual for the correct setting).

6. Refill with New Fluid:

   • Add the new transmission fluid through the dipstick tube using a funnel.
   • Start with about 4-5 quarts, then check the level.

7. Check Fluid Level:

   • Start the engine and let it warm up. Shift through all gears with the brakes applied.
   • With the engine running, check the fluid level and top off as necessary.

8. Check for Leaks:

   • Inspect for any leaks around the pan and seals.

Pro Tips

• Proper Disposal: Dispose of old fluid according to local regulations.
• Monitor Levels: Always double-check fluid levels after driving a bit.
• Be Thorough: A full flush might require disconnecting cooler lines, but a pan drop and filter change is often sufficient for regular maintenance.

This will ensure smoother shifting and prolong the life of your transmission. If you want more details, the Bullnose Ford subreddit might have additional insights.

Changing the oil on your Bullnose Ford is a straightforward task. Here’s how you can do it:

Tools and Materials

• Oil filter wrench
• Socket set or wrench
• Oil catch pan
• Funnel
• New oil filter
• New oil (typically 10W-30 or 10W-40 for these years, but check your manual)
• Rags or shop towels

Steps

1. Safety First:

   • Park on a level surface and set the parking brake.
   • Allow the engine to cool if it’s hot.

2. Drain Old Oil:

   • Place the oil catch pan under the oil pan.
   • Remove the drain plug with a socket or wrench.
   • Let the old oil drain completely.

3. Remove Old Oil Filter:

   • Use an oil filter wrench to remove the old filter.
   • Be prepared for some oil to spill as you remove it.

4. Install New Oil Filter:

   • Apply a little new oil to the rubber gasket on the new filter.
   • Hand-tighten the new filter; no need to over-tighten.

5. Replace Drain Plug:

   • Reinstall the drain plug and tighten it securely.

6. Add New Oil:

   • Remove the oil filler cap and add new oil using a funnel.
   • Start with the amount specified in your manual (usually about 5 quarts).

7. Check Oil Level:

   • Start the engine and let it run for a minute.
   • Turn it off, wait a few minutes, then check the oil level with the dipstick.
   • Add more oil if necessary.

8. Check for Leaks:

   • Inspect the oil filter and drain plug area for leaks.

Pro Tips

• Dispose Properly: Make sure to dispose of the old oil and filter at a recycling center.
• Check Often: Regularly check your oil levels and condition between changes.
• Gasket Care: Ensure the old filter’s gasket didn’t stick to the engine when removing it.

Changing the oil regularly is key to keeping your truck running smoothly. If you’re keen on more visual guidance, the Bullnose Garage YouTube channel might have helpful videos available.

Absolutely, keeping all your fluids fresh is crucial for your Bullnose Ford. Here’s a list of other fluids to consider changing:

1. Coolant

• Frequency: Every 30,000 miles or as recommended.
• Tip: Use a 50/50 mix of coolant and distilled water.

2. Transmission Fluid

• Frequency: Every 30,000 to 60,000 miles.
• Tip: Ensure you’re using the correct type (Mercon or Dexron II/III).

3. Brake Fluid

• Frequency: Every 2 years.
• Tip: Use DOT 3 or DOT 4 fluid, and bleed the brakes to remove air.

4. Power Steering Fluid

• Frequency: Every 30,000 miles or as needed.
• Tip: Check for leaks, as low fluid can indicate a problem.

5. Differential Fluid

• Frequency: Every 30,000 to 50,000 miles.
• Tip: Check your manual for the right weight and type.

6. Transfer Case Fluid (4WD)

• Frequency: Every 30,000 miles.
• Tip: Ensure the use of the correct type, typically ATF.

Pro Tips

• Regular Checks: Always keep an eye on fluid levels and conditions.
• Use Quality Fluids: Stick with recommended brands or types to avoid issues.
• Consult the Manual: Your owner’s manual is your best friend for specific intervals and types.

Keeping up with these fluid changes will help ensure your truck runs smoothly for years to come. If you need more detailed guidance, the Bullnose Ford subreddit or Bullnose Garage resources can be a big help.

Fuel system cleaners can be beneficial for maintaining your Bullnose Ford’s engine. Here’s what you need to know:

Benefits

1. Remove Deposits:

   • They help clean fuel injectors and carburetors, removing carbon deposits.

2. Improve Efficiency:

   • Clean systems can enhance fuel efficiency and performance.

3. Reduce Emissions:

   • By keeping the engine clean, emissions can be reduced.

Considerations

• Frequency: Use them every 3,000 to 5,000 miles or as needed.
• Quality: Opt for reputable brands to ensure effectiveness.
• Compatibility: Make sure the cleaner is suitable for your specific engine type and fuel system.

Pro Tips

• Follow Instructions: Always use according to the manufacturer’s instructions.
• Not a Cure-All: If you have persistent performance issues, a cleaner won’t fix mechanical problems.

Using a fuel system cleaner occasionally can keep things running smoothly, but it’s not a replacement for regular maintenance. If you’re curious about specific products, the Bullnose Ford subreddit might have user recommendations.

During an oil change on your Bullnose Ford, you’ll pour the new oil into the oil filler neck. Here’s how to find it:

Steps to Locate the Oil Filler Neck

1. Open the Hood:

   • Safely support it with the hood prop.

2. Locate the Oil Filler Cap:

   • Look for a cap on the valve cover, usually marked with an oil can symbol or labeled "Engine Oil."

3. Remove the Cap:

   • Twist it counterclockwise to open.

4. Add New Oil:

   • Use a funnel to pour new oil into the filler neck to avoid spills.

Pro Tips

• Use the Right Oil: Check your manual for the correct type and viscosity.
• Double-Check Levels: After adding, run the engine briefly and check the oil level with the dipstick.

Performing these steps carefully ensures a clean and efficient oil change.

Yes, it’s a good idea to run the truck briefly before checking the oil level. Here’s why:

Why Run the Engine?

1. Circulate the Oil:

   • Running the engine for a minute circulates the new oil throughout the system.

2. Settle the Level:

   • It allows the oil to reach all parts of the engine and settle back into the oil pan.

Steps

1. Run the Engine:

   • Start the truck and let it idle for a minute or two.

2. Turn Off and Wait:

   • Turn off the engine and wait a few minutes for the oil to drain back into the pan.

3. Check the Level:

   • Use the dipstick to check the oil level and add more if necessary.

Pro Tip

• Avoid Overfilling: Add oil gradually and check often to avoid overfilling.

This ensures you get an accurate reading and keep your engine properly lubricated.

The length of the oil dipstick can vary based on the engine type and configuration in your Bullnose Ford. Typically, these engines came with varying dipstick lengths depending on the engine model and options.

General Guidelines

• Small Block V8s (302/351): Usually around 19-21 inches.
• Straight Six (300): Similar in length, but may vary slightly.
• Aftermarket Variations: Keep in mind some aftermarket parts might differ.

Checking Your Dipstick

1. Measure Yours:

   • If you need an exact measurement, simply remove it and measure from the top of the handle to the tip.

2. Compare with Manuals:

   • Consult your owner’s manual or a service manual for specific details.

Pro Tips

• Accuracy Matters: Ensure the dipstick is fully inserted to get an accurate reading.
• OEM Preferred: If replacing, try to stick with OEM or high-quality aftermarket options for reliability.

If you’re looking for specifics, you might find diagrams or details in service manuals or Bullnose-specific forums.

Whether your Bullnose Ford truck has a points distributor depends on the year and engine.

Points vs. Electronic Ignition

• 1980 Models: Likely have a points distributor, especially if it’s still original.

• 1981–1986 Models: Most came with Ford’s Duraspark II electronic ignition system. These don’t use points.

Identifying Your Distributor

1. Remove the Distributor Cap:

   • Check for points and condenser if it’s a points-style.
   • Look for a pickup coil and electronic module if it’s Duraspark II.

2. Check for a Module:

   • Duraspark II systems have an external ignition module, usually mounted on the fender.

Pro Tips

• Upgrading: If you have points, consider upgrading to an electronic system for better reliability and performance.
• Maintenance: Points require regular adjustment and maintenance, while electronic systems are mostly maintenance-free.

If you’re diving into ignition upgrades or repairs, the Bullnose Ford subreddit might offer insights from folks who’ve done similar work.

For the Bullnose Ford trucks, the transmission pan bolt torque specs typically vary depending on the transmission type. Here are the general specs:

Common Torque Specs

• C6 Transmission:

  • Torque spec is usually around 12-14 lb-ft.

• AOD Transmission:

  • Torque spec is typically 10-12 lb-ft.

Tips for Tightening

1. Use a Torque Wrench:

   • Ensure even tightening and avoid leaks.

2. Follow a Crisscross Pattern:

   • This helps evenly distribute pressure on the gasket.

3. Avoid Over-tightening:

   • Over-tightening can damage the gasket or warp the pan.

If you’re unsure about your specific setup, consulting a service manual for your exact transmission model is always a smart move.

Cleaning your engine bay can make maintenance easier and your truck look great. Here’s a step-by-step guide:

Tools and Materials

• Degreaser: Use an engine-safe degreaser.
• Brushes: Soft and stiff brushes for scrubbing.
• Plastic Bags/Wrap: To cover sensitive components.
• Garden Hose or Pressure Washer: Use with caution.
• Microfiber Towels: For drying and detailing.

Steps to Clean

1. Preparation:

   • Ensure the engine is cool.
   • Disconnect the battery.
   • Cover sensitive parts like the alternator, distributor, and air intake with plastic bags or wrap.

2. Apply Degreaser:

   • Spray the degreaser on greasy areas.
   • Let it sit for a few minutes but don’t let it dry completely.

3. Scrub:

   • Use brushes to scrub dirt and grime off surfaces.

4. Rinse:

   • Gently rinse with a garden hose or low-pressure washer.
   • Avoid directly spraying sensitive components.

5. Dry:

   • Use microfiber towels to wipe down.
   • Remove plastic coverings and let air dry.

6. Reconnect Battery:

   • Once everything is dry, reconnect the battery.

Pro Tips

• Regular Maintenance: Regular cleaning prevents buildup and makes future cleaning easier.
• Check for Leaks: After cleaning, it’s easier to spot leaks or worn hoses.

Cleaning the engine bay isn’t just about aesthetics; it helps you spot potential issues early. If you’re looking for visual guides, there may be videos on the Bullnose Garage channel worth checking out.