LQ9 2 dead cylinders
#1
LQ9 2 dead cylinders
I just put an LQ9 in my 58 GMC. My #5 & #7 cylinder are running colder than the others (120f at idle as compared to 300f in the others) and if you unplug the injectors or plugs it makes no difference with the engine. My injectors are firing and I've pulled the rails while turning it over and they all spray good. Also has lots of spark and plugs are new and has good compression. Valves seem to be opening all the way, I've swapped coils, plugs and injectors around with no change. Anyone have any ideas what could be causing this? Motor has about 20000 miles on it.
Last edited by 1000000to1; 09-13-2016 at 02:23 PM.
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