engine problems
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New User
Joined: Oct 2007
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engine problems
First time here,been to several shops,no one knows anything,I need a REAL FORD GUY that knows about Fords,i'm a true Ford man.
I have an 86 f-150 extended cab,two tank truck.
Nothing is original,the I-beam,rear end,drive line,motor/trans,air,....etc... has all been replaced (5 times on motor).
I use this as a service truck,average about 35,000 miles a year,this truck has seen vegas,dallas,denver,memphis,and now oklahoma city.
Here is the problem no one seems to know.
A local shop replaced my timing chain (plastic gear tipped),distributor/module.
All the fuels pumps (3) I replaced,filters,pressure regulator..etc.
the injectors are fine.
The motor hesitates,backfires,and the timing chain rattles,if you replace the plugs,cap,and rotor it runs fine for about a week,but when you jump on it,it starts it again,I noticed the inside of the distributor cap has white trails where the rotor touches,the plugs get a black appearance as does the top of the rotor where it engages the cap.
I'm very mechanical,but for the life of me can't figure this one out,does anyone have a clue? or should I let Ford check it out?
I have an 86 f-150 extended cab,two tank truck.
Nothing is original,the I-beam,rear end,drive line,motor/trans,air,....etc... has all been replaced (5 times on motor).
I use this as a service truck,average about 35,000 miles a year,this truck has seen vegas,dallas,denver,memphis,and now oklahoma city.
Here is the problem no one seems to know.
A local shop replaced my timing chain (plastic gear tipped),distributor/module.
All the fuels pumps (3) I replaced,filters,pressure regulator..etc.
the injectors are fine.
The motor hesitates,backfires,and the timing chain rattles,if you replace the plugs,cap,and rotor it runs fine for about a week,but when you jump on it,it starts it again,I noticed the inside of the distributor cap has white trails where the rotor touches,the plugs get a black appearance as does the top of the rotor where it engages the cap.
I'm very mechanical,but for the life of me can't figure this one out,does anyone have a clue? or should I let Ford check it out?
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New User
Joined: Oct 2007
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engine.........
you know what! thanks!!!!
I haven't changed the wires in awhile,and,when I did the a/c system I spilt a/c oil all over the coil,that makes sense,going to o-reilly now! thanks again!
I haven't changed the wires in awhile,and,when I did the a/c system I spilt a/c oil all over the coil,that makes sense,going to o-reilly now! thanks again!
Originally Posted by critterpainter
You didn't mention wires in your changout. They could be going south and have high resistance OR your coil output has degraded. Actually i would check the coil first
Bill
Bill
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Joined: Feb 2000
Posts: 11,496
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From: Kansas
Welcome to the site! 
Be sure and use the tech forums to get solutions to your questions. Click on the Forums tab at the upper left will open the door to all the boards here. Lot of good folk in your state chapter to: https://www.ford-trucks.com/forums/forum92/
Be sure and use the tech forums to get solutions to your questions. Click on the Forums tab at the upper left will open the door to all the boards here. Lot of good folk in your state chapter to: https://www.ford-trucks.com/forums/forum92/
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Joined: Oct 2007
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engine problems
Thanks for the info,learning how to navigate this great page.
Originally Posted by Ultramagdan
Welcome to the site!
Be sure and use the tech forums to get solutions to your questions. Click on the Forums tab at the upper left will open the door to all the boards here. Lot of good folk in your state chapter to: https://www.ford-trucks.com/forums/forum92/
Be sure and use the tech forums to get solutions to your questions. Click on the Forums tab at the upper left will open the door to all the boards here. Lot of good folk in your state chapter to: https://www.ford-trucks.com/forums/forum92/
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