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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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cambelt jumped a tooth.Views : 26973 Replies : 286Users Viewing This Thread : |
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Mar 22nd, 2010, 10:35 | #241 |
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ps sorry its been bugging me again, had to have the cambelt cover off, same old same old, inlet out, and im sure the crank marking doesnt sit dead centre , just over a touch.
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Mar 22nd, 2010, 12:28 | #242 |
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Is this what is considered to have slipped a tooth...It looks fairly normal to me.... Op, am i correct (sorry the thread is very long) in the assumption that the car starts fine but after a few miles the car starts popping and misfiring...Whats your temprature gauge like?... Jod
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Dum Spiro Spero VOC 20419 Last edited by Jod T5; Mar 22nd, 2010 at 12:35. |
Mar 22nd, 2010, 15:02 | #243 | |
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volvo 850 2.5 and she smokes. Last edited by lou; Mar 22nd, 2010 at 15:07. |
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Mar 22nd, 2010, 15:12 | #244 |
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you`d need a decent amount of slack on the belt for it to jump i the first place an if its going to jump, im pretty sure it wudnt just jump one tooth!(correct me if im wrong lol)..
i think myself that its not being set up right in the first place and its moving after the belts settled in. iv seen this before when ppl try to align the cams and it all looks sweet until the tensioner does its job and tightens the belt up to what it should be an they find that the belt is out a tooth or two but they swear down it was lined up properly. diesel pumps can be the same as the timing notch is sometimes under pressure and you have to go past the notch when putting the belt on for it to be lined up when the belt settles.. |
Mar 22nd, 2010, 16:38 | #245 | |
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Cheers Jod
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Mar 22nd, 2010, 16:46 | #246 | |
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I have done several cambelt changes and they have never alligned exactly...See Above.... I expect that once you have lined things up and start the engine, flexing in the belt or pulleys makes the alignment appear to go out of kilter.... If you want to check this mark the cam cog tooth and the belt... From the picture you posted I really cant see it being a tooth out, a tooth either way would have far more visual effect.... I would start, as i said earlier with the thermostat... Jod
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Dum Spiro Spero VOC 20419 Last edited by Jod T5; Mar 22nd, 2010 at 16:53. |
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Mar 22nd, 2010, 18:00 | #247 |
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hi jod ok you may be right will look into it, can tell you the car runs the same at the half way mark on the temp, but we also noticed that the exhaust was hot up untill the cat then from the clamp back so far it was cold then the back box was warm. ok wanna double check, can these cars be run without a thermostat just to try to see if this is the problem.
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Mar 22nd, 2010, 18:10 | #248 | |
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If the thermostat is jammed open then effectivly you are running without one... You may also have a blocked cat, which wont help the running.... Jod
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Mar 22nd, 2010, 18:15 | #249 |
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ok the cat was replaced new in oct 09 and i checked the ox sensor and it was black
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Mar 22nd, 2010, 18:17 | #250 | |
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Jod
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