Timing Chain Tensioner
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Joined: 02-01-2006
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From: lockport,ny
Timing Chain Tensioner
What are the symptoms of a timing chain tensioner going bad?
I have several posts about tensioners going bad, but I'm not sure what that would cause.
One of my 06 HHRs (120K miles) has a slightly rough idle, then it vibrates while accelerating. There is also a "chain buzzing" type sound you can hear from the engine at idle. The power seems normal, there is no oil consumption, fuel mileage seems ok.
Steve
I have several posts about tensioners going bad, but I'm not sure what that would cause.
One of my 06 HHRs (120K miles) has a slightly rough idle, then it vibrates while accelerating. There is also a "chain buzzing" type sound you can hear from the engine at idle. The power seems normal, there is no oil consumption, fuel mileage seems ok.
Steve
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Joined: 06-30-2010
Posts: 25,739
From: Kannapolis NC
A "chain buzzing" sound would lead me to wonder if you're dealing with failing/bad chain guides, and that a complete timing chain kit might be in order.
If you haven't prod's excellent thread on the tensioners, here it is....
https://www.chevyhhr.net/forums/how-tutorial-library-21/timing-chain-tensioner-replacement-fix-engine-rattle-46159/
As to the rough idle, when were the plugs changed last, MAF cleaned, throttle body cleaned?
If you haven't prod's excellent thread on the tensioners, here it is....
https://www.chevyhhr.net/forums/how-tutorial-library-21/timing-chain-tensioner-replacement-fix-engine-rattle-46159/
As to the rough idle, when were the plugs changed last, MAF cleaned, throttle body cleaned?
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