Cambelt lost a tooth - Alfa Romeo Forum
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(Post Link) post #1 of 6 Old 23-10-07 Thread Starter
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Cambelt lost a tooth

Just had the engine die on my 156. Starter making a 'not engaging' sound. Feared the worst - cambelt broken, but breadown guy said it's lost a tooth from the belt. Will this be terminal or is it possible a new belt might be ok?
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Re: Cambelt lost a tooth

i know of one case where the belt has broken but the engine valves were not bent...

but i dont like your odds.............. good luck
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Re: Cambelt lost a tooth

Would just one tooth make the belt skip? I would think it's lost a section otherwise it would still be pulled round ...

And as for other damage ... you are probably looking at bent valves even on the starter motor ...
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(Post Link) post #4 of 6 Old 24-10-07 Thread Starter
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Re: Cambelt lost a tooth

Camshaft is not turning so definitely a head off job. Get those belts changed at 36k now instead of the service book 72k!
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Re: Cambelt lost a tooth

it would make the cam slip round 1 tooth when it tries to engage where the missing one is and will slip past to the next one - maybe as much as 10 to 20o of arc difference. Cant be good but probably threw the cam out enough to cause compression leak due to valves being slightly open when they should be shut.

You may be lucky and not have piston to valve contact
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Re: Cambelt lost a tooth

My 156 jumped 3 teeth (belt did not snap) when waterpump failed at 16K miles, the mech said I was lucky it did no damage...One new waterpump and cambelt and all was you might be of luck
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