I guess my worry comes from it happening all of a sudden, it was quiet until a month ago. Or maybe it was happening all the time and I couldn’t hear it over the loud ass pulley but it definitely wasn’t doing this after the delete.
Post DoD delete ticking
- Thread starter rachealae
- Start date
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mattbta
Full Access Member
Not to be alarming, but losing coolant and white smoke sounds like a potential cracked head issue. However, I can't say I've heard of this generation having head problems - that was mainly the GMT-800's. Mine had it.
Easiest way to rule out is rent a coolant pressure tester and check for drops over 15 minutes/hour. If there's an external leak, you can pinpoint visually. If there's an internal leak it would be evidenced by pressure drop. Start at 15 PSI and let it sit and check at intervals.
THANK YOU. Everyone has been telling me it’s fine and not listening to any of my concerns (not the forum, other mechanics). I did a pressure test before the delete and the guy said it was fine…but I’m going to keep going somewhere until I can figure it out.
mattbta
Full Access Member
I was able to rent the pressure tester from AutoZone. I had to put the price of the tool on my CC as a hold, but once I returned it, the hold was lifted and in essence free. Could save you the challenge and price of paying someone and taking their word.
Dustin Jackson
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@rachealae Hopefully they can make things right.
Will absolutely do this thanks
I have a regular mechanic and a performance shop that did the DoD delete. I’m taking it to my regular mechanic to see what he suggests first tomorrow morning and then I’ll update and go from there. Hopefully I don’t need to go back to the performance shop.
petethepug
Michael
I didn’t check your invoice but assumed your Indi used new exh gaskets. My tick was the gaskets. I had the motor mounts go and a lot of movement on the exhaust for a long time.
New gaskets after the downpipe was reinstalled was the key. The second thing to look at is verifying if the tech pre lubed your lifters.
Some even go as far as using a dedicated crock pot for a soak. Then they’re heated for a few hours. After they’re warmed they’re checked for action and smooth operation. Any friction at that point means you found an issue before installing them.
New gaskets after the downpipe was reinstalled was the key. The second thing to look at is verifying if the tech pre lubed your lifters.
Some even go as far as using a dedicated crock pot for a soak. Then they’re heated for a few hours. After they’re warmed they’re checked for action and smooth operation. Any friction at that point means you found an issue before installing them.
swathdiver
Full Access Member
2 things I don't like seeing on that receipt. They put a smaller camshaft in the motor than what came out of it, lazy. They put in 0W40 motor oil. These engines were designed for 5W30. This is why she rattles so much on start up.
LS engines don't purr like a kitten. The valvetrain makes noise, the injectors make noise, even the coils firing make noise.
Go to your local auto parts store or Harbor Freight and get one of these so you can find the source of the annoyance:
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