Rough engine with P0300 code
#2
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I would do a compression test to see what the compression is all around the motor. I would also pull the plenum and look for evidence of washing from leaking fuel. A fuel pressure and leakdown test is also a very good idea. With all of those tests you should be able to find what the problem is and get pointed toward a fix.
#3
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Finally got my hands on a compression tester. i only got one side checked. hoping to do the other side tomorrow. Got about 60 lbs in #3 and #5 cyl, but had over 100 lbs in #1. Im thinking its head gaskets. hopefully the head aint cracked.
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