help me find an electrical gremlin, please
As above
But you first need to figure out for sure whether it's spark or fuel.
Carry a "test gap" with you so that you can see the test gap while USING THE KEY to crank the engine. This is because cranking the engine with the key is using the brown bypass circuit, the run circuit is "cold." Cranking the engine by jumpering the start relay is using the RUN circuit, and this goes THROUGH THE BALLAST
So you are not simulating "actual conditions" in one case
You can make one from a plug or buy them. Rig it up so you can see it through the hood gap, reach in and try the key. You should get a nice hot snappy spark. IF you do, and the engine won't fire, it HAS to be a fuel problem
IF the engine tries to fire, then quits when you release the key, it is in the RUN circuit of the ignition harness ---ign switch/ connector, bulkhead, ballast resistor.
ignition spark tester
As above
But you first need to figure out for sure whether it's spark or fuel.
Carry a "test gap" with you so that you can see the test gap while USING THE KEY to crank the engine. This is because cranking the engine with the key is using the brown bypass circuit, the run circuit is "cold." Cranking the engine by jumpering the start relay is using the RUN circuit, and this goes THROUGH THE BALLAST
So you are not simulating "actual conditions" in one case
You can make one from a plug or buy them. Rig it up so you can see it through the hood gap, reach in and try the key. You should get a nice hot snappy spark. IF you do, and the engine won't fire, it HAS to be a fuel problem
IF the engine tries to fire, then quits when you release the key, it is in the RUN circuit of the ignition harness ---ign switch/ connector, bulkhead, ballast resistor.
ignition spark tester
