LS2 L76 only turns by hand Quarter turn
11-01-2018, 06:49 PM
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LS2 L76 only turns by hand Quarter turn Hi guys My name is James
engine I'm working on 2007 Silverado lt L76 AFM and VVT 4X4 crewcab
problem: lost one of my lifters on bank one AFM
Fix I got delete kit for the AFM and A delete kit for the VVT so new cam new lifter new spring new seals new gaskets new gears new chain and timing chain cover and a 5 pin to 3 pin vvt plug and play.
Everything seemed to go smooth, but then it happened, put the new timing chain set the marks 6 and 12 easy set the oil pump ok went to adjust the valves and my engine turned over only a quarter of a turn??????
So I started to take every thing back off, Well I'm down to just the crank and pistons and the heads are on but no push rods cam spins fine but I removed it also and removed the oil pump and timing chain , still won't turn
I pulled the oil pan this morning, I see nothing used my borescope, I'm missing something ,I sorry if you don't understand me.
any help would be great
James
engine I'm working on 2007 Silverado lt L76 AFM and VVT 4X4 crewcab
problem: lost one of my lifters on bank one AFM
Fix I got delete kit for the AFM and A delete kit for the VVT so new cam new lifter new spring new seals new gaskets new gears new chain and timing chain cover and a 5 pin to 3 pin vvt plug and play.
Everything seemed to go smooth, but then it happened, put the new timing chain set the marks 6 and 12 easy set the oil pump ok went to adjust the valves and my engine turned over only a quarter of a turn??????
So I started to take every thing back off, Well I'm down to just the crank and pistons and the heads are on but no push rods cam spins fine but I removed it also and removed the oil pump and timing chain , still won't turn
I pulled the oil pan this morning, I see nothing used my borescope, I'm missing something ,I sorry if you don't understand me.
any help would be great
James
11-01-2018, 09:30 PM
#3
ModSquad
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How are you adjusting the valves? Did you mean to say that you were checking pushrod length?
11-01-2018, 09:42 PM
#4
Long block with no pushrods and no FEAD belt should turn over pretty easy with the spark plugs REMOVED. You do have the plugs out, right? If it’s not turning over in that condition then I would say you have an internal bind. Especially with the cam and timing gear off. How was the failure you experienced? Was there metal shrapnel thrown into the engine or did you catch it early?
11-02-2018, 09:22 AM
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Long block with no pushrods and no FEAD belt should turn over pretty easy with the spark plugs REMOVED. You do have the plugs out, right? If it’s not turning over in that condition then I would say you have an internal bind. Especially with the cam and timing gear off. How was the failure you experienced? Was there metal shrapnel thrown into the engine or did you catch it early?
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11-02-2018, 10:43 AM
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11-18-2018, 03:38 PM
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How did you check the oilpump clearance/ procedure?
11-21-2018, 02:13 PM
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