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  • 1 Post By Bigboytoys
  • 1 Post By legendman

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Old 05-14-2019, 01:38 PM   #1 (permalink)
Gmctroubleocco
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6.2 mechanical lift pump ticking?

Any thoughts or advice much appreciated! Now i have fixed all my air leaks i think, i have fuel leaks, better out than in i guess! Getting a hold on that, but now i am hearing or have now just noticed the sound of my mechanical lift pump running, making a ticking sound i guess? Just wondering if this is normal? Or am i headed towards more fixing? Thank you in advance! Much appreciated!

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Old 05-15-2019, 09:52 AM   #2 (permalink)
jnlperformance
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Should post it on the 6.2 section. Most pumps on 6.5s are electrical.

I'd take a gander at no.... ticking sound is not good. But that's just an educated guess. I assume ticking sounds are bad until proven otherwise.

Bigboytoys in the 6.2 section should have a solid answer for you.



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Old 05-15-2019, 10:40 AM   #3 (permalink)
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Thread relocated over to "6.2L"

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Old 05-15-2019, 01:04 PM   #4 (permalink)
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Ya ticking usually isnít a great sign ... I think you just replaced that pump, wonding if they sold you a SBC pump and arm is too short sooo the pump rod is floating back and forth ticking asay & barely working the LP at the same time
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Old 05-17-2019, 11:59 AM   #5 (permalink)
legendman
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Wondering if it's a gasser 350 lift pump also like BBT said.
Back in the day the auto parts stores had the same part # for a pump that fit the gas v8s and the 6.2.
Happened to me, wasn't getting proper fuel delivery and found I had a gasser pump, side by side you could see the difference in the arm that the rod pushes against.


Also the tunnel in the block might be worn and making a ticking noise as it moves around in there.
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Last edited by legendman; 05-17-2019 at 12:04 PM.
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