In my opinion, THIS Case Study by Eric "O" at SMA (South Main Auto) covering a Comprehensive Compression and Cylinder Leak Down Testing on an LL8 Motor that is RARE TO SEE...
Just might have benefited from our ACDelco TEC (Top Engine Cleaner) Treatment Procedures as a Last Ditch Effort to try and save this Engine from having the Engine Head PULLED, either for a Complete Valve Job or a Re-manufactured Engine Swap R&R:
LOTS of Additional Engine Charging System Diagnostics and Compression Testing Step By Steps are covered here as a Lead-In to the other more Serious Engine Internals Diagnostics and includes a myriad Additional Tips & Tricks from Eric "O" that will prove VERY Useful to ALL GMT360 Owners. THIS Video deserves a definite Download, Save and Review from our Private Engine Diagnostics and Maintenance Libraries:
Quality "OTC" Model #5609 Cylinder Leak Down Pneumatic Test Kit:
Just might have benefited from our ACDelco TEC (Top Engine Cleaner) Treatment Procedures as a Last Ditch Effort to try and save this Engine from having the Engine Head PULLED, either for a Complete Valve Job or a Re-manufactured Engine Swap R&R:
LOTS of Additional Engine Charging System Diagnostics and Compression Testing Step By Steps are covered here as a Lead-In to the other more Serious Engine Internals Diagnostics and includes a myriad Additional Tips & Tricks from Eric "O" that will prove VERY Useful to ALL GMT360 Owners. THIS Video deserves a definite Download, Save and Review from our Private Engine Diagnostics and Maintenance Libraries:
Quality "OTC" Model #5609 Cylinder Leak Down Pneumatic Test Kit:
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