nc89240

Hello all need a little advice here, I have had my 89 coupe for about one year now, and have been working on it off and on all year, I am now at the point where it should start after replacing the timing chain and gears and replacing all the pieces the former owner lost. Now when I try to start it the car turns over but will not seem to fire. Any suggestions, I have good fuel, good spark and the compression seems good, any help would be greatly appreciated.

positron

The timing must be off now. Try adjusting that.

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godfrey99

I am also having the same problem, I have checked all possibilities and everything seems to be fine. I am begining to think it may be a computer problem

rogoman

This seems to be a common problem with many folks when replacing the timing chain. I'll post some timing procedures.

Checking the cam timing:
First disconnect the ignition coil wire, remove all the spark plugs and remove the valve cover. Have someone tap the starter while you have your thumb over the #1 spark plug hole. Once you feel compression, insure that the block timing pointer at the front pulley is pointing to the zero mark on the pulley. Remove distributor cap and insure that the rotor is pointing to #1 firing position. The #1 piston is now sitting at TDC COMPRESSION STROKE. Remove the timing cover. The keyways for the crank and cam sprockets should be at the 12 o'clock position. Now look at the lower end of the timing chain for the chain mating mark which should be at the crankshaft sprocket gear mark; 5 o'clock position. The top end of the timing chain mating (silver) mark should be at the sprocket gear mark; 3 o'clock position.

Setting the ignition timing:
Remove the distributor and the oil pump. Now you need to find Top Dead Center (TDC) for the compression stroke in order to time the ignition distributor. To find TDC, remove #1 spark plug. Have someone tap the ignition switch start position to slowly crank the motor while you put your thumb over the spark plug hole. When you feel the compression, stop. Now look down at the timing pointer at the front pulley. It should be pointing to ZERO. If not, manually turn the motor clockwise or counter-clockwise until it's pointing to ZERO.

The oil pump uses a shaft to turn the distributor. Insert this shaft onto the oil pump with the punch mark on the shaft lining up with the hole on the oil pump (below gear). Install pump/shaft to block. When installed the end of the shaft will look like a "D", when looking into the distributor hole while standing at the drivers side front wheel well. Actually, it (the "D") will be more of a "11:45" position, NOT quite "12:00"; if not, then remove, and reinstall until the above position is obtained.

Determine the #1 plug wire location on the distributor cap. Mark that location on the distributor body. Now insert the distributor into the block so that the rotor ends up pointing to the mark you put on the side of the distributor body. You now are timed close to correct; you should be able to start the motor.

nc89240

thanks for all the help I will see what i can do when the weather dries out around here