COAL FIRED
New member
Like the title says need a little help figuring out a miss. Truck is a 06 i just did headgaskets delete,stc,stand pipes,dummy plugs & cleaned the injector spool valves truck starts good and runs perfect cold but once warm it starts to miss its not consistant it will b smooth then miss it runs perfect under acceleration. I hooked up the computer everything look good fuel pressure is good. Ran the koer test and got cyl 5 contribution repeatedly so i replaced #5 now its doing the same only its giving me cyl 1 contribution code thinking maybe a hpo problem wouldn't think its another injector just not sure how to go about determining whether it is a injector or not thanks in advance
