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Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado and GMC Sierra Gasoline Engine Problems
261 messages, Last post on Nov 24, 2009 at 6:35 AM
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Replying to: kevin1970 (Aug 24, 2009 6:48 pm)
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Replying to: davethecarnut (Aug 24, 2009 10:51 pm) |
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| On the Chevy Silv., 2001 - 6.0l vortec, w/ 298k miles...the oil pressure gauge is bouncing back and forth between 30 and 60 while i drive and it will literally go to zero (0) if i stay in idle/park and the message light will say check oil pressure and the truck will cut off. Think the oil pump is bad; going bad; the lifter/s or valve/s is tapping sorta loud? Thanks in advance for any advice. Kevin | |
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Replying to: jerryk2 (Jun 29, 2008 12:55 pm) |
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I have a 6.2 Flex fuel 09 403HP. My question is does anyone know how the roller lifters are oiled in my engine? In the old days of hydraulic and solid lifters splash seemed to work in non Hi-Perf. motors. I have read on some forums that roller lifters and roller rockers need lube. It is said,in low rpm range, MODERN ENGINES do not splash as much oil as older motors and the needle bearings of modern motors need oiling at low RPM's (2000 to 3000RPMs) or might have wear and breakage issues. Does any one in this community know of or heard any or some or just a few 6.2 L 403 HP V8's having roller issues? Does anyone know specificly,does the 6.2 have mist,pressure or non needle bearing rollers? I run syn. oil and will be running Oil analysis so I assume I would know if the needle bearing are wearing it would show even though I am running a bypass system that has a 2 micron absolute filtering. Ideas and opinions would be appreciated. |
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| My 2000 Silverado has a P0300 code. I have done all of the stuff I have read about on the internet. New fuel filter, cleaned injectors, new plugs, checked for vacuum leaks, etc, etc. I finally gave up and took the truck to a mechanic. He found misfire history on cyl 1 & 6. Strangely they have the exact same misfire count. I took the #6 injector and swapped with #2. Drove the truck and went back. The same counts again on the same cylinders. Why 1 and 6? Why the same count? He now wants to check wiring since 1 and 6 fuel injector pins are next to each other on the PCM. There aren't any misfires at idle. Only at highway speed. I'm thinking the PCM is corrupt and should be flashed. Any other thoughts from you guys? Thanks | |
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Hello, first of all I'd like to say that I have scoured these forums for a solution to my problem and haven't found anything that could help. I am a quadriplegic and I don't drive but I am writing this to help my son who has a 1997 GMC Sierra 1500 with a 5.7 L vortec engine with 180,000 miles on it. The truck starts and runs fine until it warms up. After that, you can get the RPM up if you slowly work the accelerator but as soon step on it, the engine just bogs down until you back off the accelerator. It almost seems like it ran out of gas. He has replaced the fuel pump, fuel filter, the ignition module. It's not throwing any codes. Needless to say this is very frustrating and the truck is basically useless under these conditions. He isn't a mechanic and is unemployed at the moment so he just can't start throwing money at it. Any help that I can get here on this forum would be greatly appreciated. Thank you, Paul
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Replying to: themajickman (Nov 21, 2009 7:47 am) |
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