GM Oil pump fail
Hi guys, finally got bit. Started it up and rolled about 50 feet and got the dreaded "No Oil Pressure" message. Shut it down. I know you've heard this story before. Here is the twist...
This was already a new pump installed when I did my CAM at 10,000 miles. I am now just over 25,000. JDP motorsports suggested the early change as a preventive measure at that time. Little did they know that the GM pumps continue to fail even in the new year models and was not just a bad batch problem. They have fixed 6 other Camaro's already this year apparently. So the moral to my story and maybe what you readers should take away is don't replace bad with bad. I am going to put a Melling oil pump in this time which is what JDP is using going forward. I am just hoping that there was no damage up top to add to my grief. That is all! Have a good day. :violin: |
Thanks for letting us know. Hopefully no damage!!
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Sorry to hear but wow lack of details.How did it fail?Debris cause a the reliefe plunger to be stuck i assume? No aftermarket pump will fix that unfortunetly as they all are copies of the OE design in that regard.Bad batch? What was bad about them?
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Is it a more aggressive cam which is causing these to break, or is this happening on stock engines as well?
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Ls pumps have sucked since 1997 they are all the same. Except the L99's but the melling a are still an upgrade. |
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Fuuuuuu****K! Just got the verdict. Scored my CAM to sh*t, lifters are bad, check valve completely stuck open on pump = no pressure. Only ran for less than a minute this way. Looks like major dollars for less than 15,000 miles of run time. Can't believe it. :((
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Cam brand? Oil brand? Sorry for your troubles, OP. Good luck, my friend. |
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Mobil 1 makes me cringe when guys/gals get aggressive cams
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Sounds like another one of the comp cam failures. A chunk of a cam for less then 60 seconds without oil pressure seems like a bit much.
I once had a Dodge Ram with a 318 where the old gasket stuck to the block after changing the oil and filter. With more then 1 minute running driving to an exit with no oil pressure I had the truck towed home, put a new filter and oil, and all's well for 140,000 miles and counting (my brother in-law still has it on the road). I've got a the factory oil pump in my car with over 30,000 miles since a cam swap (ZR1 cam) with nothing but Mobil 1 0W40. The rev limiter is set at 6,800 rpm and is brought that high pretty frequently with dozens of 1/8 mile passes. Only at my last oil change did I start adding a ZDP additive. Granted my cam uses stock springs which aren't high pressure but I wonder how many of the oil pump failures posted have been with comp cams? |
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