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1986 Ford F-150 Engine stalls and hesitate

Tiny
CHEDDER91
  • MEMBER
  • 1986 FORD F-150
Engine Performance problem
1986 Ford F150 V8 Two Wheel Drive Automatic

When it gets hot it gives a me problems like its flooding it hesitates and it blow out black smoke if it quit dont want to start like it dont have enough power but if I wait for minute it will start
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Monday, July 5th, 2010 AT 3:13 PM

23 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
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The black smoke indicates it is running rich (too much gas, not enough air). This takes me back a ways. I believe it is fuel injected correct?
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Monday, July 5th, 2010 AT 7:04 PM
Tiny
CHEDDER91
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Yea its feul injected
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Monday, July 5th, 2010 AT 7:59 PM
Tiny
JACOBANDNICKOLAS
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I need you to check fuel pump pressure and the regulator. If you need directions, let me know.

Joe
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Monday, July 5th, 2010 AT 9:00 PM
Tiny
CHEDDER91
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I know were it's at but how do you check it and what am I checkin for presure
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Monday, July 5th, 2010 AT 9:28 PM
Tiny
JACOBANDNICKOLAS
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Here are the directions for checking the regulator and fuel pump pressure. There is a video and directions. Let me know what you find.

http://www.2carpros.com/how_to/how_to_check_fuel_pressure.htm
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Monday, July 5th, 2010 AT 9:57 PM
Tiny
CHEDDER91
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So that presure regulator causes my truck to not turn over like it wont spin it like it got a alot presure on the engine or like the starter got a bad spot but its not the starter because when its cold it start right it and run good
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Monday, July 5th, 2010 AT 10:14 PM
Tiny
JACOBANDNICKOLAS
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If you are getting black smoke, that tells me it's getting too much fuel to the engine. If the regulator isn't working properly, it could be allowing too much pressure to build in the system.
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Monday, July 5th, 2010 AT 11:47 PM
Tiny
CHEDDER91
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  • 16 POSTS
Thanks ima change it today and see up and get back to u
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Monday, July 5th, 2010 AT 11:57 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Before replacing it, here are directions to check for pressure. Make sure it is bad first. You will need a fuel pressure gauge. Most parts stores will lend ir rent one to you.

http://www.2carpros.com/how_to/how_to_check_fuel_pressure.htm
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Tuesday, July 6th, 2010 AT 4:29 PM
Tiny
CHEDDER91
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Ok if isnt that whats the next thing to test
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Tuesday, July 6th, 2010 AT 4:39 PM
Tiny
JACOBANDNICKOLAS
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The next thing I would check is the temp sensor. It tells the computer the outside temp and the coolant temp. From that, the computer decides how rich or lean to make the fuel mixture.
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Tuesday, July 6th, 2010 AT 7:04 PM
Tiny
CHEDDER91
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  • 16 POSTS
Ok if it isnt the regulater whats next because before it started messing up it started as ground wire when I fixed that it was gettin any spark so I changed the control muduel and that it been acting I even change the time chain like a couple days ago and when say it hard to start im saying it wouldnt spin hardly like 1 spin and then it seem like it locking up after I try it like three time it will finally turn over and start just to remind it only do this when gets warmed up I changed regulator I dont know now I even put the timing light on it so its timed right whats nexted HELP!
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Wednesday, July 7th, 2010 AT 8:28 AM
Tiny
CHEDDER91
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Ok how would find the that sensor
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Wednesday, July 7th, 2010 AT 8:30 AM
Tiny
CHEDDER91
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Ok let me start I week ago it broke down it wasnt getting any spark so I change the control moduel I mark everythang before change I just loosin the destributer didnt take it up put the moduel in and it been runnig but poorly so a mechanic said it was the time so I put a timing chain in it still got the same and I ment to tell u when I the distribiter a sertain way it will start up when it hot but it still heisitate and conks out whst could dat be
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Wednesday, July 7th, 2010 AT 9:21 AM
Tiny
JACOBANDNICKOLAS
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Okay, that makes a difference. When the mechanic told you the timing was wrong, I believe he ment the distributor needed adjusted not a new timing chain. When you turn the distributor, you are adjusting the timing. You need to get a timing light and check to make sure the distributor is in the correct position. Also, are you sure you didn't pull it out enough for it to jump a tooth on the distributor?

Everything is starting to make sense to me now.

Let me know.
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Wednesday, July 7th, 2010 AT 11:55 PM
Tiny
CHEDDER91
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Naw I just loosin it up turn it and I took the module off and replace but I put a new chain in it made sure piston was at tdc marde sure button bout under number spark plug I changed the regulator and the temp senor its still hesitating and hard to start but when I had the old chain it was so bad I took the distributor up and turned it back to teeth sens I brought the new chain it still doing the same thing I out time light on it yesterday time it still acting up black smoke and hesitating when push the gas a little bit like when im taking from a light whats the next thing do I test
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Thursday, July 8th, 2010 AT 9:40 AM
Tiny
JACOBANDNICKOLAS
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The black smoke indicates too much fuel. You replaced the fuel pressure regulator and temp sensor. I would start checking to see if you have a sticking injector.
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Thursday, July 8th, 2010 AT 5:27 PM
Tiny
CHEDDER91
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How do I test a injector with out any electric it do I got do it take one with the wire still connected
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Thursday, July 8th, 2010 AT 11:47 PM
Tiny
JACOBANDNICKOLAS
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Have you checked to see if there is power to the injector? You need a noid light to test that.

Let me know.

Joe
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Friday, July 9th, 2010 AT 9:04 PM
Tiny
CHEDDER91
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Yea I got a test light u want to put the test light in the connects while the truck is running and the test light should be blinking everyone rite but tells me if it stuck up I maybe getting electric but it still could be stuck open even though its flashing and I read the book it say the the same u told it told the same thing u told about the regulator
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Friday, July 9th, 2010 AT 11:07 PM

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