Loud Ticking when car starts
#1
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Loud Ticking when car starts
I want everyones input on loud ticking sound when you start the car.
Just recently and not often when I start the car, I head this loud ticking sound (3 ticks) the sound if I could describe it is almost like a hammer against metal.
My buddy thinks its the timing chain/tensioner. If it is, did GM release a new version or heavier duty for a tensioner?
Just recently and not often when I start the car, I head this loud ticking sound (3 ticks) the sound if I could describe it is almost like a hammer against metal.
My buddy thinks its the timing chain/tensioner. If it is, did GM release a new version or heavier duty for a tensioner?
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I want everyones input on loud ticking sound when you start the car.
Just recently and not often when I start the car, I head this loud ticking sound (3 ticks) the sound if I could describe it is almost like a hammer against metal.
My buddy thinks its the timing chain/tensioner. If it is, did GM release a new version or heavier duty for a tensioner?
Just recently and not often when I start the car, I head this loud ticking sound (3 ticks) the sound if I could describe it is almost like a hammer against metal.
My buddy thinks its the timing chain/tensioner. If it is, did GM release a new version or heavier duty for a tensioner?
#4
If it happens only on cold starts (ie. when you haven't driven the car for several hours) then its definitely the tensioner.
I had the same symptoms before mine was replaced
I had the same symptoms before mine was replaced
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I have something similar...
When the engine is cold, sometimes it makes a thwaack sound about a half second after starting up.
I guessed it was the AC clutch popping because it usually happens when I used the AC the day before, and shut the engine off with the AC engaged. The next morning, the AC buttons are turned off before starting up, but I think something mechanical is already engaged and when the belts spin, it makes a thwaack sound as it disengages.
I asked about this when I had my water pump replaced. They said the chain looked fine, and the tensioner is a non-wear/ not replaceable item. I thought it was the timing chain too.
I figured it was just noisy, but perhaps it too is something to do with the AC/ air ducts.
Mine is an 07 LS, and they did show on the computer that the tensioner is a non-wear (probably not the right term), non-something.... But they/ it said it is part of the motor and can't be taken off.
I hope it is not my tensioner and await a head failure...
When the engine is cold, sometimes it makes a thwaack sound about a half second after starting up.
I guessed it was the AC clutch popping because it usually happens when I used the AC the day before, and shut the engine off with the AC engaged. The next morning, the AC buttons are turned off before starting up, but I think something mechanical is already engaged and when the belts spin, it makes a thwaack sound as it disengages.
I asked about this when I had my water pump replaced. They said the chain looked fine, and the tensioner is a non-wear/ not replaceable item. I thought it was the timing chain too.
I figured it was just noisy, but perhaps it too is something to do with the AC/ air ducts.
Mine is an 07 LS, and they did show on the computer that the tensioner is a non-wear (probably not the right term), non-something.... But they/ it said it is part of the motor and can't be taken off.
I hope it is not my tensioner and await a head failure...
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