Cold start and stall...valvetrain chirp?
09-17-2012, 04:27 PM
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Cold start and stall...valvetrain chirp? LS1 102k miles, stock internals
The engine makes a strange noise when trying to start it cold, gets worse when there is cold weather. The engine turns over, something makes a loud chirping/clicking noise, then the engine bogs and stalls. If it is especially cold out it takes 2 or 3 attempts to start the engine. I took off both belts and the noise persists. On a few instances the engine has backfired and stalled. When the engine is warmed up, it starts perfect and there is no noise at all. My oil pressure is very high, around 60 psi cold, 70 psi hot. I believe the previous owner installed a melling oil pump. Specifically the noise is coming from the driver's side of the engine.
Bent pushrod/bad lifter?
I'll try and get a video next time it gets chilly outside.
The engine makes a strange noise when trying to start it cold, gets worse when there is cold weather. The engine turns over, something makes a loud chirping/clicking noise, then the engine bogs and stalls. If it is especially cold out it takes 2 or 3 attempts to start the engine. I took off both belts and the noise persists. On a few instances the engine has backfired and stalled. When the engine is warmed up, it starts perfect and there is no noise at all. My oil pressure is very high, around 60 psi cold, 70 psi hot. I believe the previous owner installed a melling oil pump. Specifically the noise is coming from the driver's side of the engine.
Bent pushrod/bad lifter?
I'll try and get a video next time it gets chilly outside. 
09-18-2012, 09:19 PM
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09-10-2014, 08:11 PM
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LS1 102k miles, stock internals
The engine makes a strange noise when trying to start it cold, gets worse when there is cold weather. The engine turns over, something makes a loud chirping/clicking noise, then the engine bogs and stalls. If it is especially cold out it takes 2 or 3 attempts to start the engine. I took off both belts and the noise persists. On a few instances the engine has backfired and stalled. When the engine is warmed up, it starts perfect and there is no noise at all. My oil pressure is very high, around 60 psi cold, 70 psi hot. I believe the previous owner installed a melling oil pump. Specifically the noise is coming from the driver's side of the engine.
Bent pushrod/bad lifter? I'll try and get a video next time it gets chilly outside.
The engine makes a strange noise when trying to start it cold, gets worse when there is cold weather. The engine turns over, something makes a loud chirping/clicking noise, then the engine bogs and stalls. If it is especially cold out it takes 2 or 3 attempts to start the engine. I took off both belts and the noise persists. On a few instances the engine has backfired and stalled. When the engine is warmed up, it starts perfect and there is no noise at all. My oil pressure is very high, around 60 psi cold, 70 psi hot. I believe the previous owner installed a melling oil pump. Specifically the noise is coming from the driver's side of the engine.
Bent pushrod/bad lifter?
I'll try and get a video next time it gets chilly outside.