Can u help me get my truck started?

Tiny
SASSYFAYE
  • 1985 FORD F-150
  • 97,000 MILES

While accelerating from a stop, my truck backfired, lost power and blew the muffler apart. Now it wont start

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Wednesday, November 2nd, 2011 AT 1:59 AM

15 Replies

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

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Wednesday, November 2nd, 2011 AT 2:01 AM
Tiny
SASSYFAYE
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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

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Wednesday, November 2nd, 2011 AT 2:15 AM
Tiny
CJ MEDEVAC
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CAN YOU TURN MR. ROTOR BUTTON/ ROTOR SHAFT WITH YOUR FINGERS---APPLY STIFF PRESSURE, NOT ENOUGH TO BREAK THE BUTTON

RESULTS?

THE MEDIC

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Wednesday, November 2nd, 2011 AT 2:56 AM
Tiny
SASSYFAYE
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I think so

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Wednesday, November 2nd, 2011 AT 3:13 AM
Tiny
JACOBANDNICKOLAS
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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.

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Wednesday, November 2nd, 2011 AT 3:15 AM
Tiny
CJ MEDEVAC
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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

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Wednesday, November 2nd, 2011 AT 3:19 AM
Tiny
SASSYFAYE
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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

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Wednesday, November 2nd, 2011 AT 1:28 PM
Tiny
WRENCHTECH
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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.

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Wednesday, November 2nd, 2011 AT 1:50 PM
Tiny
JACOBANDNICKOLAS
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What wrenchtech said it true. But I believe it has already been checked. (3rd post)

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Wednesday, November 2nd, 2011 AT 4:44 PM
Tiny
CJ MEDEVAC
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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

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Wednesday, November 2nd, 2011 AT 4:59 PM
Tiny
CJ MEDEVAC
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IF INDEED THE PIN IS SHEARED--GONNA HAVE TO DO IT THE HARD WAY ANYWAY.

MAYBE YOU HAVE NOT MOVED THE DISTRIBUTOR YET!

BUT IT'S GOOD TO GO THRU THE EZ PROCESS, JUST SO YOU WILL UNDERSTAND, IF YOU EVER NEED TO DO IT LATER. OR YOU NEED TO TRY IT THIS TIME.

IF YOU GET ALL CONFUSED--THE MORE INVOLVED WAY IS ALWAYS THERE TO USE. THEORY NEVER CHANGES. JUST THE WAY PEOPLE ATTACK IT!

KEEP US INFORMED

THE MEDIC

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Wednesday, November 2nd, 2011 AT 5:10 PM
Tiny
SASSYFAYE
  • MEMBER

Good Morning. I got the didtributor out and yes that is the problem.
Purchased a new distributor yesterday and will be putting it in today, after I drop the oil pan and change the oil.
I just purchased this truck a week ago, the backfire has me concerned. Is the distridutor problem also the reason for blowing apart the muffler or do I possibley have another issue?

Thank you to everyone who has replied and offered their help.

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Friday, November 4th, 2011 AT 2:58 PM
Tiny
JACOBANDNICKOLAS
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Yes, the distributor is causing the backfiring and the exhaust issue. The cylinders are firing at the wrong time. As a result, you are getting a backfire. Make sure you install the new distributor correctly so the timing is correct.

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Friday, November 4th, 2011 AT 3:34 PM
Tiny
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GLAD YOU FOUND THE PROBLEM

WHILE IT IS OUT---OBSERVE THE BOTTOM OF THE HOLE IT CAME OUT OF---YOU SHOULD BE LOOKING AT SOMETHING THAT LOOKS LIKE A "STRAIGHT-BLADE SCREWDRIVER SLOT"

NOTE WHICH WAY IT IS POINTING

TAKE A LARGER STRAIGHT-BLADE SCREWDRIVER AND SEE IF IT WILL TURN SEVERAL REVOLUTIONS--CLOCKWISE AND COUNTERCLOCKWISE

WHY? YOU SAY?THE SLOT IS THE "DRIVE" FOR THE OIL PUMP, IF THE OIL PUMP WILL NOT TURN, IT COULD BE LOCKED UP!IF IT'S LOCKED UP.

THAT AIN'T A GOOD THING! THIS MAY BE WHY THE GEAR'S ROLL PIN SHEARED TO BEGIN WITH (SORTA KEEPS BIGGER STUFF FROM BREAKING)

IF IT WON'T TURN--BE PREPARED TO REMOVE/ REPAIR/ REPLACE MR. OIL PUMP

IF THE BACKFIRE WAS A "ONE TIME" SUDDEN OCCURRENCE THING---YEAH, IT'S PROBABLY FROM THE "SUDDEN OCCURRENCE" TIMING IS OFF FROM THE DISTRIBUTOR MALFUNCTION.

I HOPE YOU SORTA MARKED THE POSITION OF THE DISTRIBUTOR HOUSING---AS WELL AS WHERE THE ROTOR BUTTON WAS POINTING WHEN YOU BEGAN TO LIFT IT OUT----AND OF COURSE, WE KNOW YOU DID NOT BUMP OR MOVE THE CRANKSHAFT AFTER THE DISTRIBUTOR WAS REMOVED. IS ALL OF THIS CORRECT?

IF NOT, LET ME KNOW.I'LL TALK YOU THRU THE HARD WAY OF INSTALLING IT!

IT MAY HAVE BEEN POSSIBLE TO HAVE PURCHASED ANOTHER ROLL PIN, DROVE THE OLD ONE OUT AND REPLACED IT

DEPENDING ON WHERE YOU GOT THE NEW ONE, YOU MAY HAVE A LIFETIME WARRANTY ON IT (GOOD THING)

THE MEDIC

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Friday, November 4th, 2011 AT 3:49 PM
Tiny
CJ MEDEVAC
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OH YEAH!

GOT AHEAD OF MYSELF--THE "HARD WAY" IS THE ONLY WAY THE DISTRIBUTOR CAN PROPERLY BE INSTALLED

YOU ARE GONNA HAVE TO REMOVE #1 SPARK PLUG AND FIND "TDC" ON THE COMPRESSION STROKE--IN ORDER TO DROP THE DISTRIBUTOR INTO THE CORRECT TOOTH OF THE CAM

I WILL EXPLAIN IN GREATER DETAIL IF NEED-BE!LET ME KNOW!

ALSO, YOU MAY HAVE TO MOVE THE OIL PUMP SLOT, TO MATCH UP WITH THE DIST SHAFT IN ORDER FOR THE DIST TO SEAT DOWN FULLY

THE MEDIC

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Friday, November 4th, 2011 AT 3:59 PM

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