1982 Ford F-100 Troubleshooting

ARE YOU SURE THIS AIN'T A 300 CU. IN INLINE 6 CYLINDER ENGINE (OR A 4.9 LITER FOR ALL OF Y'ALL FOREIGN KINDA FELLERS)?

WHAT SORTA HISTORY DO WE HAVE?

IS THIS A SUDDEN OCCURRENCE THING?

IS THIS DRIVEN MUCH/ LATELY?

WHAT HAVE YOU DONE TO IT RECENTLY AND ALSO AS AN ATTEMPT TO FIX IT?

ADD ALL YOU WANT, THE MORE INFO THIS WAY, THE BETTER.

THE MEDIC

PLEASE CHECK YOUR VEHICLE INFORMATION YEAR/ ENGINE SIZE/ ETC (TOP OF YOUR 1ST QUESTION)

PLEASE CORRECT ANY DISCREPANCIES SO I CAN FIND YOUR VEHICLE SPECS.

THIS HAS A CARBURETOR/ TBI/ FUEL INJECTION?

HOW FAST IS IT IDLING?

WAS IT AT THE CORRECT IDLE SPEED WHEN YOU TIMED IT?

HAVE YOU CHECKED FOR VACUUM LEAKS?

THE MEDIC

FOUND THAT ENGINE IN YOUR YEAR (I DON'T KNOW WHY IT KEPT POPPING UP "300" AS THE ONLY 6 CYL CHOICE

THE GAS CAP ISSUE SORTA MAKES NO SENSE FOR A CARBURETOR VEHICLE, TOO MUCH AIR IS NOT AN ISSUE, RUNNING NO CAP AT ALL WILL HAVE NO AFFECT, ON NEWER VEHICLES THAN '82, IT IS MORE OF A POLLUTION CONCERN.

VEHICLE MUST BE TIMED AT A SPECIFIC IDLE SPEED, IF THE IDLE IS TOO FAST, THE CENTRIFUGAL ADVANCE (WEIGHTS) INSIDE THE DISTRIBUTOR WILL "ADVANCE" THE TIMING. THEN IF "YOU" SET IT TO TEN, IT MAY BE A GOOD BIT OFF.

IT'S ALSO A MUST TO REMOVE AND TEMPORARILY CAP THE VACUUM ADVANCE HOSE (VACUUM HOSE) DURING THE TIMING PROCEDURE, AS WELL AS ADJUST AND MAINTAIN THE CORRECT IDLE SPEED THROUGHOUT THE PROCEDURE.

WHEN TIMING IS DONE, REPLACE THE VACUUM ADVANCE HOSE, INSURE YOUR IDLE SPEED IS AT CURB IDLE. THIS CURB IDLE INFO SHOULD BE UNDER YOUR HOOD, AND IS PROBABLY BETWEEN 700-800 RPM (MY REFERENCE SAYS TO SEE UNDER HOOD LABEL)

BACK TO "HISTORY"

JUST DUG IT OUT OF THE BARN?

BEEN DRIVING IT DAILY SINCE IT LEFT THE FACTORY?

ETHANOL TENDS TO EAT ON CARBURETOR RUBBER PARTS

I'M GONNA LINK YOU TO A POST I ANSWERED A GOOD WHILE BACK, PRETTY MUCH IT'S A "HOW TO TUNE UP" MY JEEP. THIS SORTA EXPLAINS STUFF "AFTER" YOU HAVE REPLACED THE NORMAL"SCHEDULED MAINTENANCE" PARTS (AS IT LOOKS LIKE YOU HAVE!)

https://www.2carpros.com/questions/jeep-cj7-1985-jeep-cj7-stalls-when-hot

YOU REALLY NEED THE CORRECT METERS TO DO THIS RIGHT, "GUESSING" USUALLY DON'T CUT IT! THIS STUFF AIN'T GOTTA BE TOP OF THE LINE, MANY TIMES YOU CAN FIND THESE "DINOSAURS" IN A PAWN SHOP VERY CHEAP. SOMETIMES THE CLERK HAS NO CLUE AS TO WHAT THEY ARE!

RETURN WITH GOOD NEWS!

THE MEDIC

THE BOWL VENT SOLENOID, ALLOWS THE FUEL VAPORS IN THE BOWL TO ESCAPE INTO THE CHARCOAL CANISTER, IT'S A POLLUTION KINDA THING.

DID YOU RUN THRU THE LINK I SENT YOU? DID IT SOUND DO-ABLE?

SENDING A PIC OF THE DWELL/ TACH I HAVE

A PLAIN JANE TIMING GUN IS ALL YOU NEED, IF YOU HAVE A "HIGH SPEED" ADJUSTABLE ONE, JUST SET THAT PUPPY TO ZERO AND USE IT THE TRADITIONAL WAY (AS I SHOW IN MY PREVIOUS LINK)

THE MEDIC

IF YOUR EMISSIONS VACUUM STUFF IS STILL ALL HOOKED UP, YES YOU NEED 'EM

THE MEDIC