Posted by RodInNS on August 07, 2010 at 09:35:17 from (216.118.158.123):
In Reply to: Re: chevy 6.5 posted by Roy in Ga on August 07, 2010 at 07:06:18:
Any time I've dealt with a bad injector it made a loud thud much like a bad main bearing. This is on a Ford engine tho... your GM could be different.
If it's really got much pushback into the intake then I'd really look at a valve. That can make a fairly loud pop if it's bad enough.
I'd suggest trying to narrow down which cylinder is the culprit by opening each line and seeing which one doesn't cause more of a miss. That should be the bad one. Then compression test that cylinder or and mabey a couple more for reference and compare that against specs. I don't know what they are for that engine but I'd guess that since it's a prechamber engine it's probably going to push 500 # or so. If it's got valve or other head issues or piston issues it's probably going to have poor compression... Or you can just pull the head on the effected bank and see what's happening.
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