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1985 Ford F-150 Repair Question


Topics covered: Distributor, Engine, Spark.
Mileage: 97,000 miles.

Asked on November 2, 2011

Can u help me get my truck started?

While accelerating from a stop, my truck backfired,lost power and blew the muffler apart. now it wont start
Avatar Asked by sassyfaye

Answer

Replied on November 2, 2011

If it won't start, check to see if there is spark and fuel getting to the engine. Let me know what you find.

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided
Replied on November 2, 2011

there is no spark at plugs, I pulled the distibutor cap off to see if the rotor was spinning when the engin was cranked. No movement at all from the rotor

Tiny Response from sassyfaye
1 question asked
Replied on November 2, 2011

CAN YOU TURN MR.ROTOR BUTTON/ ROTOR SHAFT WITH YOUR FINGERS---APPLY STIFF PRESSURE, NOT ENOUGH TO BREAK THE BUTTON

RESULTS?

THE MEDIC

Tiny Answered by CJ MEDEVAC (expert)
6,797 answers provided

Replied on November 2, 2011

I think so

Tiny Response from sassyfaye
1 question asked
Replied on November 2, 2011

It sounds like the distributor gear is damaged. The rotor should turn. THat is where the problem is coming from. You need to remove the distributor and check what is causing the problem.

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided
Replied on November 2, 2011

USUALLY THE ROLL PIN THAT HOLDS THE GEAR ON THE SHAFT SHEARS-PIN WOULD NEED TO BE REPLACED AND RE-TIMED, IF THIS IS WHAT HAS HAPPENED.THIS IS NOT SET IN STONE, COULD BE WORSE.

CAN YOU DO THIS YOURSELF?

THE MEDIC

Tiny Answered by CJ MEDEVAC (expert)
6,797 answers provided

Replied on November 2, 2011

ok. Todays project will be to pull the distributor out and check the pin. I am able to do this myself, but, I must go to work first. I will let you know how this all went later this afternoon. Thank you

Tiny Response from sassyfaye
1 question asked
Replied on November 2, 2011

Why don't you just crank the engine to see if the rotor turns before you go and throw everything out of time checking something that you haven't confirmed.

Tiny Answered by Wrenchtech (expert)
14,713 answers provided
Replied on November 2, 2011

What wrenchtech said it true. But I believe it has already been checked. (3rd post)

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided
Replied on November 2, 2011

IF THE CHECK (BUTTON TURNS ROUND AND ROUND WITH YOUR FINGERS)WAS DONE CORRECTLY

IT'LL STILL TURN WITH THE CRANKING ACTION (CAUSE THE GEAR MAY STILL SORTA TIGHT ON THE SHAFT, SLIPPING MAY BE INTERMITTENT)

EVEN REMOVED, THE PIN APPEARS TO BE INTACT ON BOTH SIDES OF THE GEAR---THE MIDDLE IS THE SHEARED PORTION

IT'S GONNA HAVE TO BE ONE OF THOSE DEALS, WHERE YOU KNOW FOR CERTAIN THE SHAFT WILL TURN 'ROUND AND 'ROUND WITH YOUR FINGERS----I'M NOT TALKING BACK AND FORTH SLACK, THAT IS NORMAL!

LET US KNOW FOR SURE--WE MAY ALSO BE ABLE TO EXPLAIN PULLING THE DISTRIBUTOR, MAKING NOTES ALONG THE WAY, AND BEING ABLE TO RE-INSTALL IT WITHOUT GOING THRU THE "TOP DEAD CENTER" (TDC) PROCESS----MAY GET YOU BACK IN, WITH LITTLE EFFORT.

THIS PROCESS MUST BEGIN, BEFORE YOU SNATCH IT OUT!!!!.....GOTTA DO IT THE HARD WAY OTHERWISE!!!!

THE MEDIC

Tiny Answered by CJ MEDEVAC (expert)
6,797 answers provided