Timing Belt Cover Noise

[89CAL]

Hey all

Did my 100,000km service yesterday and changed water pump, timing belt and tensioners

put it all back together and get a odd noise from the timing belt area

Take the cover back off and have a look and everything looks fine, put CAS on without the cover and it runs perfectly, everything sounds ok

put the cover back on and start it and it makes the noise again, press down on the cover (from the top) and noise goes away

soooo I have figured its gotta be a problem with how the cover is put on. Just after some advice on the best way to align it etc basiclly some advice from someone whos had this problem before. It doesnt appear as though the belt was rubbing cause when i took the cover off there were no marks on it I think it may have just been vibrating in one spot?

just after advice

Cheers

[No Crust Racing]

Are you tightening the timing belt cover evenly when you're putting it on?

Does it do it with the cover sitting on but only very light tightened up?

[89CAL]

Are you tightening the timing belt cover evenly when you're putting it on?

Does it do it with the cover sitting on but only very light tightened up?

I found that with the top two bolts tightened up it doesnt seem to do i but when i tighten the bottom to up it starts doing it

i fiddled with it for ages last night and ended up pushig down on it and doing it up at the same time to get it to work ok but its still not perfect

[No Crust Racing]

You should try and tension it evenly at all corners. Is the cover warped or something? Are they the standard screws holding it in place? You shouldn't have anything fouling on the cover. The noise you describe sounds more like bearing stress than contact with the belts but contact is much more likely/ Sure there's no marks inside the cover anywhere?

Le us know how you go.

[89CAL]

to easy ill go have another try

forgot to mention i lost the centre bolt the first time i pulled it off but it was still doing it then. Ill try and make up a replacement bolt to put there in the mean time till i can go source one from nissan

Thinking perhaps its the top cover pushing the bottom cover in on the belt or something which would explain why it does it more when the bottom bolts are tightened

Thanks for the advice ill go have another shot

[No Crust Racing]

Good luck and let us know how you go.

[89CAL]

Well I'm feeling pretty average so i fixed up my alternator/water pump belt and then felt to crap to start on the timing cover so ill probably get out and do it tomorrow morning.

so im still up for advice for anyone whos done it and had the same problem as me. The best way i can describe the problem, and this will probably sound weird but it makes my car sound like a 2 stroke motorbike, like a CR80 or something lol. But yeh i think it may be the two timing covers rattling together or something in which case ill just run some silicon or something around the outside of the top one and give it another go like that

[89CAL]

Just found out that most of my noise is actually coming from my A/C compressor

when clutch is engaged (A/C on, car running) the noise isnt present but as soon as i turn A/C off (clutch disengaged, car running) then i get a loud whirring type noise

still gonna take the timing cover off for a looksy

but a bit concerned about the A/C compressor

could it be a tight belt cause i think i did it a bit tight?

was no problems before the service, only thing is i may have spilt collant or water on it but i didnt think that would have to much affect if everything is still working (AC is still cold)

Edited December 30, 2008 by Boostin96

[No Crust Racing]

Yep tight belt will cause that or the AC comp has a failing bearing. The tight belt could cause this noise as well though and could also cause the bearing to fail if you leave it too long.

Keep fiddling, you're getting somewhere

[89CAL]

lol yehh i think its just to tight on the A/C compressor,i think i did them all a bit tight out of frustration and being in a hurry cause id spent 12 hours on the damn thing and just wanted to go home lol

fixing it all up today, even sourced a bolt from a friend who decided to ditch the timing cover when his did the same thing as mine lol

Hopefully will be all good this arvo

[No Crust Racing]

Ahh sweet as, let us know how you go.

[89CAL]

Been a while but update:

My A/C noise was from the washer/dust seal (or whatever u want to call it) on the outside of the A/C idler being to tight and it was rubbing metal off the actual idler so thats fixed now and all good

The timing cover is still not being co-operative. I drove around with it for a while with the bottom bolts only just done up enough so they wouldnt fall off and decided to check everything and give it another go yesturday and same thing.... as soon as i tightened the bottom bolts on the upper cover up it would make the noise. Can do the top two up tight and dont have any noises. It appears to be the bottom right bolt in particular that is making the noise. Howeve it does not seem to be damaging the belt or anything cause the belt still looks perfect......

So still after help if anyone else has had this problem

atm ive just got left the bottom bolts a little looser

Cheers

Callan

[Craved]

have you checked that the metal spacers in the rubber seal under the cas are still installed? normally stuck onto the top covers opening around the CAS.