4bidden

Lately when I am accelerating from a stop light or something, I hear a very distinct flapping noise coming from the engine. I popped the hood and at idle the timing belt area seemed very loud. Can a loose timing belt make this much noise? I just fixed some exhaust leaks, so I know what those sound like, and this isnt the same. However, this does seem to get louder with throttle position.

Any ideas? I have the valve cover off right now doing a valve adjustment, let me know if there is anything I can look for while I have it off besides timing belt condition. It was changed <20k miles ago btw.

4bidden

Here are two pics of the timing belt.

Read some old posts and some said its the auto tensioner about to take a crap....could this be true?

4bidden

Here is a video of me showing the play in the belt between the cam gears....I have no idea if this is significant or not.

(2.56MB) http://www.forbiddenmotorsports.com/tb_vid.avi

4bidden

Here is a vid of the play on the exhaust cam side of the timing belt

http://www.forbiddenmotorsport...1.avi

biglew

I got the same problem I think. I hear a flapping type sound around my belts, sounds like it's coming from behind my timing belt cover area, ever fix this? If so what was it?

99spanishGT

hey man its me again im having the same problem i can feel it in my clutch pedal so i dont know if its something with my clutch. i also have a sqeaky belt that started up 3 days ago and i havent looked to see which one. maby you could look at it on friday. did you already regester. they are allowing walk ups id be there by 7:30 . ill ask tommorow and tell you back on this post. later

4bidden

I'll check it out on Friday, no problem.

I also got a squeaky belt, most likely from all the fluids I have spilled on it recently. A tightening helped a bit, but didnt take it away.

I'll be there at 8 or so....hopefully with my new CF fog trim covers, right JOEL!!!

JG Luder

I've heard that sound about... oh.... 4 times. All four times I jumped the timing belt within two weeks.

If it was my car my first reaction would be yank the auto tensioner and replace it. Bent valves and holes in pistons suck.

4bidden

This thread is way old. I already swapped to manual tensioner.

JG Luder

wow... resurrected from the dead and I didn't notice.

I'll just go and play with leaded paint chips now...............................

biglew

Yeah that was my fault, I didn't want to get mobbed by the SEARCH *****.

david90

ur tb is too loose!

JG Luder

wait wait wait.... you have a muffler bearing going bad. I've seen it a dozen times. I work at a shop... I know this stuff..................

4bidden

No no, I already checked it and filled it with coolant.

JG Luder

oh, see? That's where you went wrong. Use half MTF and half brake fluid... (dot 3)

4bidden

Crap. I was just at AutoZone and got some Mugen bearing fluid off the shelf...that should work, its Mugen.

JG Luder

yeah, anything that's $127.78 per 12 oz. bottle will work.