another no start question

67Dart273 said

OK, the new cluster should have nothing to do with the no start

How did you check spark?

VERY important to understand..........

If you check spark when jumpering the start relay, you don't have the same conditions as when using the key, because

"In run" the ignition buss goes through the ballast resistor, and THIS LINE GOES COLD during crank

"in crank" USING THE KEY the coil is directly supplied 12V from a separate contact in the ignition switch.

What does the spark look like? Good and strong? where/ how did you check it?

Have you checked the plugs? wet/ dry?

Click to expand...

I layed the plug against a header and had the wife turn the car over. No problem seeing the spark.. Looked nice and strong and the plugs looked wet. The fan was turning over as the engine did so i know the timing chain is still in one piece. Battery is fully charged and showing 12.5 volts without a load on it. thought at first it might be a ballast resistor so I put in a new one..when this did not work I checked for spark. The carb is a newer reman one from holley that I had been using before, I know its getting gas the fuel filter is a clear style one and shows a decent amount of fuel in it.