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All Other GM Diesels Discuss any other GM Diesel engines... 5.7l Olds, Chevette Diesel, or anything else that doesn't fit anywhere else...

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Old 10-29-2018, 11:24 PM   #1 (permalink)
Cphelps62
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Need some knowledge

Hello all! I have several trucks,04’ Silverado 3500 6.6, 84’ GMC Caballero diesel 5.7...my question is on the 84’ 5.7 I have fuel pooling under the IP, using a mirror I can see none of the lines are leaking, is there a seal in the bottom of the IP? While running it becomes a pretty good leak ( stream)

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Old 10-30-2018, 09:03 AM   #2 (permalink)
OkDually
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Welcome to DieselPlace

I moved your post over to "All other GM Diesels" for better views and responses to your 5,7L issue



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Old 11-04-2018, 07:33 PM   #3 (permalink)
upsmoker
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For sure not what you`d like to hear. But I`m guessing the pump will have to come off and at least get a seal/ring kit. But before you do pull the pump, arm yourself with some decent mirrors, a good LED flashlight, LOTS of good rags.. Mirror light the underside of the pump until you locate the leak. spend as much time as needed so you know where to pay attention should you decide to seal the pump yourself. Not that you shouldn`t pay attention to everything, but special attention to where the actual leak is.
Think of a leak in the roof of your house, rarely does it show inside directly where the leak is in the roof itself...?? Does that make any sense at all??
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Quote:
Originally Posted by Bigboytoys View Post
Weeeellll a 6.2 and 5.7 have 3 things in common, you put oil in the pan, antifreeze in the block and it burns diesel
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Originally Posted by Bigboytoys View Post
Dang it ... your making the quote wrong, 4 things 5.7's and 6.2's have in common, flex ring failures ....

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Old 11-04-2018, 10:52 PM   #4 (permalink)
Cphelps62
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Thanks Upsmoker! Yes, all good info an the seal kit is ordered, pump is off. Is the start up as bad as I’ve been herein’ about bleeding the lines?
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Old 11-05-2018, 05:17 PM   #5 (permalink)
upsmoker
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Long story short, no it isn`t. Post up when your pump is in, everything hooked up, good batteries fully charged.
Good luck on the pump
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Quote:
Originally Posted by Bigboytoys View Post
Weeeellll a 6.2 and 5.7 have 3 things in common, you put oil in the pan, antifreeze in the block and it burns diesel
Quote:
Originally Posted by Bigboytoys View Post
Dang it ... your making the quote wrong, 4 things 5.7's and 6.2's have in common, flex ring failures ....

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Old 08-28-2019, 07:02 PM   #6 (permalink)
Cphelps62
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The 83 5.7 Caballero is up and running, I’ve been driving it a little. My question is I set the ip back exactly to the scribe mark I made before pulling it. I’m getting white/ slightly blue smoke out the exhaust. Nothing obvious as far as coolant/ oil. Any ideas?
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Old 09-02-2019, 10:02 AM   #7 (permalink)
JCDiesel
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Quote:
Originally Posted by Cphelps62 View Post
The 83 5.7 Caballero is up and running, I’ve been driving it a little. My question is I set the ip back exactly to the scribe mark I made before pulling it. I’m getting white/ slightly blue smoke out the exhaust. Nothing obvious as far as coolant/ oil. Any ideas?
You should be able to either advance or retard the pump to get it in time. Will take some tinkering.
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Even the guys who own them aren't 5.7 guys.
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