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| Timing belt started to rattle http://www.4g61t.org/forum/viewtopic.php?f=17&t=41371 |
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| Author: | cheese [ Mon Jun 01, 2020 7:02 pm ] |
| Post subject: | Timing belt started to rattle |
I have an 1989 colt 4g15. Was driving fine, when it started to make load rattling noises. Maybe the belt is loose? I tried to tighten it but am struggling to figure out how. Link of the noise is below. https://youtu.be/GdKNzh0OiTM |
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| Author: | GTiProll [ Tue Jun 02, 2020 1:22 pm ] |
| Post subject: | Re: Timing belt started to rattle |
The tensioner is a suspect here. Is it tightened down i. e. is it screwed completely into the block? Is its bearing not shot? |
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| Author: | cheese [ Tue Jun 02, 2020 1:47 pm ] |
| Post subject: | Re: Timing belt started to rattle |
Quote:
The tensioner is a suspect here. Is it tightened down i. e. is it screwed completely into the block? Is its bearing not shot?
Thanks for the response. I removed the timing belt and tensioner completely and they both seem fine. They also seemed tight when they were installed. I replaced them both around 20,000 miles ago. Now I'm thinking it could be the harmonic balancer.
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| Author: | GTiProll [ Wed Jun 03, 2020 11:20 am ] |
| Post subject: | Re: Timing belt started to rattle |
It sounds much like a bearing. Alternator or water pump maybe? |
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| Author: | Flying Eagle [ Sat Jun 06, 2020 4:38 pm ] |
| Post subject: | Re: Timing belt started to rattle |
Could be a rocker arm out of adjustment. They are solid and require periodic adjustment with a feeler gauge and a 10 mm socket/torque wrench. If a stethoscope directly down to the bolt head on the tensioner doesn't show the sound louder to your ears, suspect and test at the valve cover in different spots. A long and large handled screw driver can provide the same effect I am told. Valve cover is very easy to remove and is probably leaking anyways, because old petrified gaskets. |
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| Author: | cheese [ Sat Jun 20, 2020 11:55 am ] |
| Post subject: | Re: Timing belt started to rattle |
I Couldn't figure it out so I brought it into a shop. Turned out to be a worn out sprocket. It was worn in the center causing it to rattle. |
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| Author: | Flying Eagle [ Sat Jun 20, 2020 7:09 pm ] |
| Post subject: | Re: Timing belt started to rattle |
Glad you got it sorted. Not a good sound. Hopefully was only a few hundred dollars to get it repaired. |
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