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| More timing problems; Timing belt runs half off pullys. | |
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| Tweet Topic Started: Dec 2 2011, 04:38 PM (661 Views) | |
| mnjones | Dec 2 2011, 04:38 PM Post #1 |
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Fresh Fish
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I have an old 94 metro that has been a fantastic little car. However, the water pump finally started leaking. I replaced the pump and put the timing belt back on. Then just to make sure the timing was right, I started it before I put the cover on. It ran great. When I went around to the front of the car to finish putting it together, I noticed the timing belt was only barely on the gears, with more than half of it hanging out in space. I had replaced it about ten thousand miles ago, so I didn't put a new one on this time. I decided maybe I had it on backwards from the way it was. I turned it around and started the car. Same thing. I looked at the timing cover, and found that the timing belt had been rubbing on the cover for some time. It had almost worn a hole in the cover. What could cause this? What do I do about it? Please help. |
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| Rooy | Dec 2 2011, 07:46 PM Post #2 |
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Make sure the tensioner is bolted down squarely. |
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| Memphis metro | Dec 2 2011, 08:11 PM Post #3 |
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Center bolt thru tension tight and lower pulley on crank on. |
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| allmountain40 | Dec 2 2011, 09:30 PM Post #4 |
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Bottom crank pulley is what holds belt from "walking" off of the gears. Since your cover was not on yet I assume the pulley was not either, and that is why your belt is walking off. Usually the cause of belts wearing thru cover is that not all of the bolts were put back in cover and cover warps allowing belt to rub.
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| wayn | Dec 2 2011, 09:33 PM Post #5 |
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Really fresh fish
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| billy508 | Dec 2 2011, 10:55 PM Post #6 |
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billy508
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What AllMountain40 said
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| Memphis metro | Dec 2 2011, 10:56 PM Post #7 |
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I know the tensioner bolt being loose will do it too. Mine did . Thats a good catch on his most likely cause though.
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| mnjones | Dec 3 2011, 12:39 PM Post #8 |
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Fresh Fish
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Thanks for all the responses, guys. I think everything was straight and tight, but I'll double check. I didn't have the bottom pulley on. However, isn't it outside of the plastic cover? Maybe not. I'll check, and I'll let you know what I learn. |
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| Memphis metro | Dec 3 2011, 12:52 PM Post #9 |
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The bottom pulley keeps the belt from comming off the lower crank gear. |
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| mnjones | Dec 6 2011, 08:56 PM Post #10 |
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Fresh Fish
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You were right! The bottom pulley keeps the belt on. The cover does go behind the pulley, but the diameter of the hole is larger than the timing belt sprocket. Thank YOU!! |
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. Thats a good catch on his most likely cause though.
1:58 PM Jul 11