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Chevylife88

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    2011 Chevy Silverado

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  1. Well started assembly and the retainer bolt for the lifter tray is not tightening down I screwed it back out and had small thread shards spiraled on the bolt anyone know what tap size I should use obviously I'm going to have to go oversized, really don't know what to do ??
  2. Slimjim2525 i was just going to park as I pulled into work and it started shaking in steering wheel and just missing out like it wasn't getting spark idling at 500 rpm like it was about to do finally check engine light started flashing and stabilitrak/service traction control was coming up on dash once I checked fuel injectors, new spark plugs put in, took a new coil pack around to all cylinders all of it never did a thing did compression test and it was very low cylinder 7 which is an AFM lifter and did leak down and then tore head off checked lifters sure enough 7 on intake side was collapsed
  3. There is some grit in the cylinder bores above pistons they are all still in and I don't wanna force the grit down into the ring gaps but I don't wanna take pistons out what's a good way to clean them out without taking the pistons out
  4. One more thing can I squirt WD 40 in cylinder bores and hold rag over and spray them out with air ? I don't wanna remove the pistons ?
  5. Hey guys thanks for the reply your both right the lifter is bad and will be replacing all with original GM lifters now about this AFM I see a lot about it well a lot of bad and from what I see I can delete or turn off AFM ?
  6. Hello new to forum and I am experiencing low compression on cyl 7 on my 2011 Silverado I'm running a leak down test in morning but I keep seeing this AFM talk and idk much about it other than its re active fuel management and the little I have read on here but I did have a loose rocker on that cyl took all rockers and pushrods out all seem fine took intake manifold off to find a lot of gas in cyl 7 intake port ? Hoping for a bad valve as I don't want to replace rings and pistons sooo any suggestions or has anyone experienced this issue
  7. First time user bare with me, I have a 2011 chevy Silverado 5.3 engine has the 243 heads and I have low compression on cylinder 7 I removed my intake manifold and discovered quite a lot of gas in my cyl 7 port? Running a leak test tomorrow but has anyone had this problem I mean truck is 6 years old with 104k miles I'm 2nd owner but I'm hoping for a bad exhaust or intake valve I don't wanna replace piston rings anyways any ideas as what to also do or look for ? ( also when pulled valve cover cylinder 7 had a loose rocker pulled all rockers and pushrods seem to be all fine)
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