Melling oil pump

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Apr 17, 2017 | 10:23 PM

Ridgeback08

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Melling oil pump

Anyone installed a Melling oil pump on their LS1? If so what color o-ring did you use? I put one on my 02 TA and used the recommended o-ring, now the damn engine is ticking again.

Apr 18, 2017 | 07:58 AM

conan

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From: Back in the Burg

Blue O ring on my LS1 F-body oil pan and pick up tube.

Black O ring on my LM7 Yukon 5.3L truck pan and pick up tube.

Apr 18, 2017 | 12:32 PM

Ridgeback08

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Is the o-ring supposed to be put on the pickup tube, then pump and tube put together? I thought the assembly instructions said to put it on the pump side. If I damaged the ring during installation I would think it would cause issues immediately, not weeks later. Do i need to replace with the same size o-ring or one that is thicker?

Apr 18, 2017 | 01:00 PM

milkey57

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From: Cedar Park, Tx

Just did this a month ago on my gto. Ordered a new blue o ring out it on the tube then installed the tube into the pump. No issues here warm idle 40psi

Apr 18, 2017 | 05:22 PM

Ridgeback08

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I must have put it on the pump side instead of the tube side causing it to not seat correctly. Where did you but the replacement o-ring?

Apr 18, 2017 | 06:42 PM

conan

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From: Back in the Burg

Quote:

Originally Posted by milkey57

Just did this a month ago on my gto. Ordered a new blue o ring out it on the tube then installed the tube into the pump. No issues here warm idle 40psi

X2

Oil up the O ring slide it on the pick up tube insert pickup tube in the oil pump as straight as possible.

What color O ring was on your original pick up tube / oil pump combo ?