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Discussion Starter · #1 ·
I have searched forums and tried to problem solve myself, but i haven't fixed the misfire. I have the 3.3 l v6, which we bought from a buddy, it had been sitting for a while but started right up without any issues. After we got it home the truck developed a misfire on multiple cylinders. I have replaced the injectors and spark plugs, I am getting spark on all plugs, and every injector is getting current. along with a compression test that showed 155 on the missing cylinder.

What should I test next? is there a common issue that I haven't thought of?
 

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What's the compression on the cylinders that are NOT missing?
 

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Because that can be a real tell if the other cylinders are significantly higher in a constant misfire situation.
 
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