Missfire

[bgdnbln]

ok here i go i have a 00 silverado w-5.3 constant misfire cyl 7 swaped coil/injector/plug wire/plug with diff cyl no change i know from alot of blown engines that ive seen cyl 7 is the one to luanch but have yet had time to do a compression ck all test that i have done has been with my tec2 any one eles experience this issue???any info would be great

[michigansilver03]

Time to get into it, take off value cover and check the valves. Check oil dip stick for signs of water in the oil(bad head gasket or crack block)

 

But do the compressor check.