M20 sounds awful after timing belt change

[boogle2]

Did the timing belt on my 88 325ix, and now it is making this horrible noise. Uploaded a video to youtube, hopefully the metallic ticking sound can be heard.

It changes with revs, and sounds like its coming from the a/c / water pump area.

Other things I changed while I was doing timing belt:

- tensioner
- water pump
- thermostat and housing
- rotor and distributor cap
- all v belts

http://www.youtube.com/watch?v=2XbGYwRfFq8

It sounds terrible and I have no idea what it could be. Please help!

Thanks,
Rob

[e30onBBSs]

It sounds like your fan is hitting something. Would make sense if it changed with rmp too! make sure you have it the right way

[digger]

yeah fan hitting shroud or radiator?

[boogle2]

Definitely not the fan. I can spin the fan by hand and no interference, and also the noise stops when I stop the car and the fan takes a few seconds to spin down.


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[audiquattrot]

Did u install the spark plug wires in the correct firing order on the distributor cap?

[long tall eta]

check for rub marks on the rad fins.

[boogle2]

Thanks for the help guys. Turned out that two bolts on the water pump pulley came loose and it was rattling back and forth with every revolution.

Fixed it and it now purrs like the m20 tractor kittens do! Thanks.

[Cabriolet]

Thanks for the help guys. Turned out that two bolts on the water pump pulley came loose and it was rattling back and forth with every revolution.

Fixed it and it now purrs like the m20 tractor kittens do! Thanks.

i had the same thing happen on a guys car i did a timing belt water pump job for. i've had to loctite them in before.

[boogle2]

Yeah I was a bit shocked they came loose. I was worried I dropped a socket in the water pump or something haha


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[audiquattrot]

Ahhh that happened to me after I did the timing belt on my old Audi

[boogle2]

Which happened... The loose bolts or the left over socket?


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[audiquattrot]

Loose bolts on the pulley