ezza

I just got my engine back together and running yesterday, i have driven it a little to get a few miles on it to let it settle in a little.

I noticed a noise coming from the engine bay that sounds a little like the buzzing noise of a bee but louder, upon closer inspection it looks like the timing belt, from the intake cam pulley to the water pump it is a blur like its resonating somewhat, but if anything when me and a friend set the tensioner we set it too tight, could this be because its too tight?

Also i dropped my exhaust cam (with gear still attatched) while the engine was stripped and now the exhaust cam gear has a bit of a wobble but i dont think its this.

any help much appreciated

thanks

ezza

anyone?

ezza

b

BrownDx

A buddy of mine had a similar issue and I tracked it back to the inner timing cover. When re-assembling the inside cover he didn't secure it properly and it was hitting the cam gear creating what I could call a 'buzzing' noise.

fcm

An overly tight belt will cause problems, a "wobble" of a cam gear is not a good thing.

Either of the above can cause "noise" and noise may be the least of your worries. 94

ezza

Well it cant be the wobbling cam gear causing the noise as the belt passes over the intake cam gear which is running true and then starts vibrating.

kyden

hes just saying the wobbling gear is a bigger issue than the noise (which it is)

ezza

Oh,

i was reading about wobbling cam gears and apparently back in the 90's some of the cheap'ish decent cam gears used to wobble, causing nothing other than premature wearing of the timing belt (not that i want that to happen).

but this will be sorted out, i just wanted to know what the noise could be

PyroProblem

The wobbly gear is probably throwing the belt out of whack causing it to hit the timing belt cover...
The loud Bee buzz is the probably timing belt hitting the cover. Id pull the timing belt covers to inspect.Youll probably see where theyve been touching...
Good luck!

ezza

I have the timing belt covers off atm so it cant be that...I thought it was cathing the valve cover but it doesnt look like it, il take it off though anf have a look for marks

boostedteg1203

When you tensioned the belt at tdc did you then rotate the engine three cam gear teeth and then tighten the tension again?

ezza

no, i havnt done it the propper way, i havne since found this method out,

Il re tension it and see how it is

j-dmek9

also what could cause that is the cam gear cover behing the cam gear, that plastic piece.... when i switched mine cam gears i went with edelbrock ones and got a new timing belt, so i put everything back together and noticed that piece was making that buzz sound.. so i removed it and it was fine afterwards... check that too!!

ezza

Il have a check, thanks^

philafelman

yeah, make sure the belt is tensioned good and also, while the belt is off check your water pump and tensioner bearings to make sure they are good.

ezza

how do i check these? just spin them and see if they go smoothly?

philafelman

yeah, and when its back together and running, you can check them by using a stethiscope on the water pump body and the tensioner bolt.