Loud tick at idle

[1G90AWDTsi]

My car's ticking pretty loud at idle. It sounds like it's coming form the turbo/O2 housing/exhaust manifold. It can't be heard at all during acceleration, only at idle and my cylinder head and all the internals in it are new, only 1300 miles on em. I think it might be a turbo/exhaust leak? How do you know?

 

[1G90AWDTsi]

what's the fix? I bought my turbo new last year (only 1300 miles on car since then)

 

[Old Mitsu Tech]

Without hearing it I would consider a couple of things. First, check and confirm your oil pressure. Also, I've run into a few bad timing belt tensioners that rattle like the dickens. If it does not do it when you rev it up but only does it at idle, I would seriously check the auto tensioner. Let us know what you find.

Good LUck

 

[1G90AWDTsi]

thanks, the sound does go away during acceleration. I will definitely check that out and post.

 

[wilddog]

Lifters perhaps?

 

[Talonman86096]

Depending on how loud it actually is i would say it could be the typical lifter tick. I know my car has done the same thing, at idle you could hear it ticking but once you started driving it it would go away.

 

[casper_talon]

I have the same problem, it started to do it after the timing belt felt loose. It sounds from 1,000 to about 3,000rpm, and then not a sound. The car runs fine, I'm installing a new hidraulic tensioner to see if that's the problem, and will post my results. Could it be from a jumped tooth by the loose belt?

 

[nataku80]

before you do that you might want to check out your main pulley. i know when mine was going bad and the rubber in the middle of the pulley started coming loose, you could hear it ticking. that was the pulley hitting the timming cover. so just take a look, but if your sure its coming from your turbo, then yeah its probably the shaft. ( just because its new doesn't mean it cant mess up)

 

[casper_talon]

The ticking sound I was having was from a blown EGR block off plate. Once I replaced it, the sound was gone. That might help.

 

[linksys42]

I would say by the description exhaust leak. Do a smoke test or sea foam. that will let ya know if you have a leak.

 

[Shaggy_357]

I would also go with the auto-tensioner, mine did the same thing and the belt was loose as crap. I've also had a "ticking" from various components smacking the timing cover, might check that as well.

 

[1G90AWDTsi]

thanks guys, it's definitely the belts hitting the lower timing cover, i bought a used one last year and i guess it's crap now because the belts are actually cutting through it (not the timing belt). THANKS