5.0 Help in a truck

[StangChik]

someone else told us that it may have jumped time....However wouldn't still have a constant fire? It would just be out of time, but it would still be firing right?

[EHardy1971]

I thought you had fire? When you say fire,are you saying it's trying to start,or it's getting spark at the plug?

[StangChik]

its not firing consistently, its random. It will spark at the plugs i think, but it will not fire enough to run a timing light.

[EHardy1971]

Originally Posted by StangChik

its not firing consistently, its random. It will spark at the plugs i think, but it will not fire enough to run a timing light.

Ok,the timing light is'nt going to tell you very much,you need to check fire at the plug. But from what you're saying about it firing intermittently,my money still says it's jumped time.Check fire at the plug,and give us an update.

[StangChik]

it will fire at the plug....but when we try to check the timing, we can't get a read.

[EHardy1971]

Do you have a compression tester?

[StangChik]

ya he check that a while back.....good compression. I think one cyl was a little low but not major.

[militarymustang88gt]

well it really just depends on what the new motor came out of. it could be a mustang motor or a 95 truck. but since it ran fine before it prob isnt firing order like you said.

[EHardy1971]

Originally Posted by StangChik

ya he check that a while back.....good compression. I think one cyl was a little low but not major.

Did he check compression after it stopped running?

[militarymustang88gt]

i would really almost put money on a ground issue or wiring issue like a short in the positive or neg going to the coil pack.