Hello I have a 2007 suburban with a cylinder 6 misfire changed the plug coilpack on 2007 Chevrolet Suburban 1500

Wire and injector still misfire compression at 134 compared to the test two mechanics say new engine still runs but shakes

by in Potwin, KS on June 30, 2014
4 answers
ANSWER by on July 01, 2014
Injector balance test and smoke test for vacuum leak been performed??... Yeah, I read about all the parts that have been installed, but have these test been done?
ANSWER by on July 01, 2014
could be hedgsaket issue but needs futher diag to be sure
ANSWER by on July 01, 2014
Possibly a broken valve spring. Pull the valve cover and have a look.
ANSWER by on July 01, 2014
Possibly a broken valve spring. Pull the valve cover and have a look.