No start problem
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Freshman User
Joined: Aug 2013
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From: Fredericksburg
No start problem
Hey everyone. I am hoping someone has some ideas to share about this problem.
I have a 1986, F150, 302 EFI. with about 136000 miles. The truck will not start. I turn the key and all it does is crank and crank. I tried replacing the ICM because I was getting weird readings on the PIP signal wire. It did not fix the problem. I can smell gas and it is getting spark. I tried to squirt starter fluid in the intake and it had no effect. I then thought it was a timing issue. Here is where it gets weird for me. The timing mark could not be found anywhere near the gauge mounted on the motor. I was wondering if anyone had ideas about this? The part that has me puzzled is that I drove the truck and it ran fine. I parked it for three days and it never started again.
Thank you for your help.
I have a 1986, F150, 302 EFI. with about 136000 miles. The truck will not start. I turn the key and all it does is crank and crank. I tried replacing the ICM because I was getting weird readings on the PIP signal wire. It did not fix the problem. I can smell gas and it is getting spark. I tried to squirt starter fluid in the intake and it had no effect. I then thought it was a timing issue. Here is where it gets weird for me. The timing mark could not be found anywhere near the gauge mounted on the motor. I was wondering if anyone had ideas about this? The part that has me puzzled is that I drove the truck and it ran fine. I parked it for three days and it never started again.
Thank you for your help.
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From: Virginia
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Joined: Sep 2012
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From: Philly, PA USA
21 & 24 are because it wasn't at normal operating temp. Obvious because it doesn't run right now..... 87 has to do with fuel pump circuit.... it should be starting if you're spraying ether but double check fuel pump relay and pump wiring anyway
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Joined: Sep 2012
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From: Philly, PA USA
considering the year....I want to know some more specifics.... Is it carbureted? Electric fuel pump? How did you check for spark? verified on multiple cylinders?
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Freshman User
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From: Fredericksburg
It is fuel injected,has two electric fuel pumps,we checked spark from the coil and on three cylinders by holding the wire close to a ground.
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From: Virginia
He said it was fuel injected. Pull one of the spark plugs. Is it wet and smell like fuel? Find the fuel regulator on the fuel rail where the injectors are. Pull the vacuum line off the fuel regulator. Is there wet fuel in the vacuum line?
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Joined: Sep 2012
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From: Philly, PA USA
So spark does sound promising. Timing just doesn't go out of whack on it's own. So timing mark for that purpose shouldn't be a priority in my opinion.
Have you pulled a plug or two just to check on them? So you have had no other problems? Is it a daily driver? All the background can be useful.
oops totally missed EFI, thanks.
Have you pulled a plug or two just to check on them? So you have had no other problems? Is it a daily driver? All the background can be useful.
oops totally missed EFI, thanks.
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Freshman User
Joined: Aug 2013
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From: Fredericksburg
I did notice the regulator vacuum line has a strong fuel smell. I have replaced the regulator once about a year ago. I will check the plugs but the truck is at my parent's house about 30 miles north of me so it will be during the week if we are not snowed in. LOL
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Freshman User
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From: Fredericksburg
Cuba,
I have had rough idle problems in the past but we got those resolved and it has been running great for about 5 months now. It is a daily driver. I have not pulled any of the plugs. Also we just put a timing light on the motor and did not disconnect the spout wire. We were just trying to see if the timing was the problem. Our thought being it should be somewhere in the ball park and just trying to rule out the timing chain jumping teeth.
I have had rough idle problems in the past but we got those resolved and it has been running great for about 5 months now. It is a daily driver. I have not pulled any of the plugs. Also we just put a timing light on the motor and did not disconnect the spout wire. We were just trying to see if the timing was the problem. Our thought being it should be somewhere in the ball park and just trying to rule out the timing chain jumping teeth.
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Joined: Sep 2012
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From: Philly, PA USA
I think that would be next step, pulling plug or two.... and bring a multimeter with you....
I hope it snows less than what they're claiming too.... this winter has been quite rough and feels worse after having such a nice winter last yr.
Yes I can see that would be helpful to know. Just haven't heard any besides modified engines to jump chain time. Not to say it doesn't happen but rare.
I hope it snows less than what they're claiming too.... this winter has been quite rough and feels worse after having such a nice winter last yr.
Yes I can see that would be helpful to know. Just haven't heard any besides modified engines to jump chain time. Not to say it doesn't happen but rare.