LS help!!!!

[417chevy]

So got my motor in, wiring finished up, fuel system installed and it fires up and runs..... But only on the passenger side cylinders. I've got spark, and fuel injectors are pulsing. I'm gonna compression check it tonight or tomorrow and check fuel pressure. Has anyone had this problem??


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[KPatterson]

Check for 12V at the main harness going to the drive side spark harness. I had the same exact issue recently. It was getting 12V put the little ****ing pin was pushed slightly back. Just enough not to make contact providing spark. I bent it back, now it runs great.

 

[417chevy]

It was a stupid clogged injector rail


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