Noise after belt change - Alfa Romeo Forum
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(Post Link) post #1 of 5 Old 24-08-18 Thread Starter
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Noise after belt change

Morning folks - got a wee 147 project car that i'm trying to get back on the road and i've just changed the belts, waterpump and cam sensor but now it's all back together there's a bit of a worrying knocking/tapping noise. I've taken the covers back off and double checked tensioners etc and ran it with the covers off and can't see anything obviously wrong. I've tried to capture the sound in this wee video clip:


Could it be the waterpump? I was hoping it was going to be something obvious like a tensioner too tight but they both seem fine.....

'06 147 2.0
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check the AUX belt tentioner, you can spray some silicone greese on it while its spinning either on the tenioner or in front of the tentioner on the belt it self on the underside where it contacts the AUX belt.
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Originally Posted by WillieNillie View Post
check the AUX belt tentioner, you can spray some silicone greese on it while its spinning either on the tenioner or in front of the tentioner on the belt it self on the underside where it contacts the AUX belt.
Not the aux I'm afraid as I've run it without already and noise still there 🙄
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Check your aux crank pulley for wear, make sure it's torqued correct. Also check for clearance between cambelt and any covers. Have you checked balancer belt?
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if it wasn't their before then my guess would be incorrect belt tension their was an similar issue on the 176 mile thread rebuild two below this have a listen
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