Noise after timing belt install

[Justin Imel]

I recently put a timing belt on my Chevy Aveo and it now makes this whirring noise.

Here are two videos of the noises.

This is one where I pried the top timing cover open slightly. You can hear some kind of rattling:

This one is beside the timing cover. You can hear a rhythmic noise:

Should I tear it back apart again?

Topic

[Caleb Stovall]

Yes.
Did you replace the tensioner and idler pulley?
Make sure the tensioner pointer lines up with the notch in the bracket. Loosen the water pump and rotate it if you’re having trouble doing so.

[Justin Imel]

Yes I replaced the belt, tensioner, idler, and water pump. The tensioner marks are pretty close. Maybe a hair towards the tighter side looking down in there. It’s been running for several hundred miles now.

I guess I’ll rip it back apart and try again then.

[Justin Imel]

Well I got it back apart. New water pump is junk. When turn it in my hand and I can hear it whining!

[Josh]

[quote=”gingerdude” post=180527]Well I got it back apart. New water pump is junk. When turn it in my hand and I can hear it whining![/quote]

Say it with me-Use OEM parts for critical jobs and do the job right the first time or use cheaper parts and do it twice.

[Justin Imel]

I don’t always get OEM parts, but I definitely get ones from a reputable brand. This time, I will not lie, I purchased a cheap pump off the net. I have learned my lesson…

[Justin Imel]

Another question. I noticed the crank timing sprocket has a slight rotational play to it. Just enough to make a tapping noise if i rotate it with my hand. Is this normal? The crank looks fine. Note this isn’t play in the crank itself, but the timing sprocket that slides over it. The crank on this car doesn’t have a woodruff key, it just has a notch machined into the crank itself. The gear has a matching notch that slides into the notch on the crank. I’m wondering if torquing the pulley bolt down keeps it from wiggling or is this bad.

Here is an example of the gear:

http://www.partsgeek.com/gbproducts/DC/17824-05352285.html?utm_content=DN&utm_term=2004-2008+Chevrolet+Aveo+Timing+Crankshaft+Sprocket+Auto+7+04-08+Chevrolet+Timing+Crankshaft+Sprocket+2007+2005&utm_source=google&utm_medium=ff&utm_campaign=PartsGeek+Google+Base&gclid=CjwKEAiAyanCBRDkiO6M_rDroH0SJAAfZ4KL3sOMNARv49aMOuOQKU2bn4dI0HbB5FAAZ9XtR7YRcxoC-97w_wcB&ad=47433966132

[Richard Kirshy]

That gear should not have rotational play.
I would look for wear on both the slot on the crank shaft and the mating key on the gear.

Your concern will be rotational shearing force on the crank gear key.

[Author]

Replies