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HOW DO I FIX THE TIMING ON MY 1985 CHEVY 305?


do you mean timming adjusting

do you mean timming adjusting or parts replacement?

WELL ADJUSTMENT I WOULD SAY

WELL ADJUSTMENT I WOULD SAY BECAUSE I REPLACED WIRING, PLUGS, COIL, CAP AND EVERYTHING MY SELF BUT AFTEER THAT IT JUST SEEMS THAT WHEN I HIT THE GAS THE TRUCK SOUNDS LIKE A GARGELING SOUND CANT REALLY DESCRIBE IT. BUT IT RUNS FINE AND IDLES FINE.

that sounds like the firing

that sounds like the firing order is off or it's way out of time. here's the info for setting the timming. the check connector is behind the glove box. let me know if this helped.

WARNING: To prevent possible personal injury from a moving vehicle or operating engine, do the following before performing the checks:

Engage the parking brake and block the wheels.
Place the transmission in neutral.
Refer to the Vehicle Emissions Control Information label under the hood. Always follow the Vehicle Emissions Control Information label procedures first before using the following procedure.
Put the IC system in the bypass mode by disconnecting the "set timing" connector. This is a single wire sealed connector that has a tan with black stripe lead. This connector breaks out of the wiring harness below the heater case in the passenger compartment.
With the ignition switch "OFF," connect the pickup lead of the timing light to the number one spark plug. Use a jumper lead between the wire and plug or an inductive type pickup. DO NOT pierce the wire or attempt to insert a wire between the boot and the wire. Connect the timing light power leads according to manufacturer's instructions.
Start the engine, and aim the timing light at the timing mark. The line on the balancer or pulley will line up at the timing mark. The timing should be O°TDC . If a change is necessary, loosen the distributor hold-down clamp bolt at the base of the distributor. While observing the mark with the timing light, slightly rotate the distributor until the line indicates the correct timing. Tighten the hold-down bolt, and recheck the timing.
Turn "OFF" the engine and remove the timing light. Reconnect the number one spark plug wire, if removed.
Reconnect the "Set Timing" connector.

I AM POSITIVE ITS THE TIMING

I AM POSITIVE ITS THE TIMING BECAUSE I RE-DID THE WIRING AND CHECKED THE FIRING ORDER AND IS GOOD. THANK YOU VERY MUCH AND WILL LET YOU KNOW HOW IT GOES.

good luck, let us know

good luck, let us know

MWS919 I TRIED WHAT YOU TOLD

MWS919 I TRIED WHAT YOU TOLD ME AND DIDNT SEEM TO GET ANY LUCK I DONT BELIEVE I GOT IT DOWN JUST LIKE YOU EXPLAINED IT THOUGH. IS THERE ANY WAY YOU CAN BREAK IT DOWN FOR ME A LITTLE BIT MORE. WORSE CASE SCENERIO I WILL TAKE IT TO A MECHANIC, I REALLY DONT WANT THAT BECAUSE TRUCK IDLES AND RUNS REAL GOOD BUT LIKE I SAID ITS JUST WHEN I GIVE IT GAS AT ABOUT 35 I HEAR LIKE A SORT OF RATTLE SOUND AND THEN IT GOES AWAY THEN IT WILL DO IT AGAIN WHEN I GET AROUND 45ISH BUT STILL RUNS FINE.


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