lq9 issue
01-26-2014, 11:12 AM
#1
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lq9 issue Ive got almost almost 3000 miles on rebuild and no issues till a few days ago after about 7 miles pressure dropped to about 25psi bounces and ticks at idle with throttle it goes back to normal. I got to school another mile down the road car sat for about 5 hrs, I started it up and no issues then right before I got home it started acting up again
01-26-2014, 01:16 PM
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Ive got almost almost 3000 miles on rebuild and no issues till a few days ago after about 7 miles pressure dropped to about 25psi bounces and ticks at idle with throttle it goes back to normal. I got to school another mile down the road car sat for about 5 hrs, I started it up and no issues then right before I got home it started acting up again
01-26-2014, 02:47 PM
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low bounceing pressure at idle happened on my stock ls1 but nvr this low or big of a bounce its more the ticking that worries me
01-26-2014, 04:37 PM
#6
New oil pump? Was it shimmed correctly? Also my bro had a "tick" in his truck once. Tore down the engine. Did a cam/head swap new valve train. Still had the "tick" after. It was a bad 200k header gasket. Word of advise don't guess and start changing parts or "hoping" for the best. Do research and trouble shoot.
01-27-2014, 03:21 AM
#7
Put a mechanical gauge to verify the problem. Then pull it out and start tearing it down and you just gotta do a post mortem on it one step at a time till you find the smoking gun. I had a 6.0 in my wifes truck spin a cam bearing and do almost exact same thing.
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01-27-2014, 09:24 AM
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loosened valve covers yesterday and let it run in driveway revving up every so often for 30 minutes and no noise no drop, ill try taking it for a drive later today before school