Weird noise

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Mar 7, 2016 | 10:37 AM

user 72239

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Weird noise

Helping a buddy with his LSJ. Car is completely bone stock. Just started making this noise a couple weeks ago. Car has 155k on it.

Any thoughts?

Mar 7, 2016 | 11:32 AM

Supercharged06SS

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From: Nj

Have you checked out the timing chain at all?? On my old lsj we thought it was the timing chain that was noisy(kind of similar to that noise) but it wasn't and ended up being something in the bottom end

Mar 7, 2016 | 12:26 PM

user 72239

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we had the valve cover off to replace the gasket and the chain looked solid.

I was thinking something in the bottom end too.

Mar 7, 2016 | 10:50 PM

ItalianJoe1

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Does it do it with the serpentine belt removed?

Pull the inspection cover on the front of the head and see if the bolt backed out/broke off.

Mar 8, 2016 | 11:01 AM

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Quote:

Originally Posted by ItalianJoe1

Does it do it with the serpentine belt removed?

Pull the inspection cover on the front of the head and see if the bolt backed out/broke off.

Is the inspection cover the plate near the water pump?

Mar 8, 2016 | 12:21 PM

ECaulk

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Quote:

Originally Posted by leemanfor

Is the inspection cover the plate near the water pump?

I think he's talking about the plate to the front, were the timing bolt breaks normally. Hard to explain without a picture, I can see it in my head. If you're working on it this weekend I'll swing by

Mar 8, 2016 | 08:54 PM

ItalianJoe1

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It's that plug right by the tensioner pulley in your video, has a 10mm allen key hole in it. Pull it out and look for anything strange, a broken guide, or bolt snapped off, etc.

Mar 8, 2016 | 10:50 PM

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Quote:

Originally Posted by ItalianJoe1

It's that plug right by the tensioner pulley in your video, has a 10mm allen key hole in it. Pull it out and look for anything strange, a broken guide, or bolt snapped off, etc.

ok sounds good. we found broken timing chain guide stuff in his oil pan.

Mar 8, 2016 | 10:55 PM

Slowbalt2000

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If you found a guide in his oil pan then its probably a broken guide. I would do a timing set. Mongo should have some low mile oem ones cheap.

Mar 8, 2016 | 10:58 PM

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well, he said that was replaced already...but it could of broke again. I will take it off and see if its there or not.

Mar 9, 2016 | 07:17 AM

#11

ECaulk

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Quote:

Originally Posted by leemanfor

well, he said that was replaced already...but it could of broke again. I will take it off and see if its there or not.

His shade tree I have no idea how to work on ecotec engines leave a carb spray cap in the intake replaced it....you know that it's probably fucked up already