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Old 11 Mar 2006, 08:36 pm
honda man
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Default Re: Timing belt noise....ticking 93 Accord

n8zdogg wrote:
> Had the exact same thing - check your belt tension. Mine was fine after
> replacing the belt.
>
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Well, I got around to looking at the cause of the ticking noise, and
found out what was happening. The timing belt teeth were hitting the
plastic "Timing Belt Back Cover" (behind the cam gear) and the "Timing
Belt Front Upper Cover" rear bolt sleeves causing the ticking or rattle
noise! Seems the timing belt between the water pump and the cam is too
loose causing it to make contact with the bolt sleeve. The timing belt
between the cam and the crank is tight, but seems too loose between the
water pump gear and the cam...and I guess it is given the fact that it
is making contact with the plastic bolt sleeve!

Soooo, I thought simple fix, just readjust the timing belt, which I did
do, tried multiple times, (set engine to TDC, loosen adjusting bolt,
rotate engine counter clockwise three cam teeth, and tighten adjusting
bolt) belt still seems to loose. Next I tried "helping" the tensioner
tighten the belt by pulling up on the timing belt tensioner with a
"customized wire hook" but when I pulled up on the rear timing belt
tensioner, it seemed as though it was as high as it would go, and would
not pull any higher. I even tried to push or rotate the water pump
gear clockwise to aid the tensioner in pulling the belt tight! Again,
it seemed like the tensioner was as high as it would go, and still
could not seem to get the belt between the water pump and the cam any
tighter. I performed all of this with only the upper timing belt
cover, and valve cover removed. With a flash light, I looked down near
the spring on the rear tensioner, and it looks like the tensioner is
pulled all the way up, as if it is not able to get any higher, or pull
the belt tighter. The "wing" part of the tensioner bracket that allows
you to lock it in place by inserting a lower cover bolt, is pulled up
beyond the bolt hole on the block, as if it is as high as it can go.
Hopefully you know what I mean, from my description.

At this point, not being able to get the belt any tighter, I decided to
trim back the upper cover sleeve with a razor blade about 1/8 - 3/16 of
an inch, so the belt will not make contact with it. Was still able to
insert the bolt without any trouble. Started the engine, and the
ticking is gone, however, I think the belt is still too loose. How can
I get this belt tighter? Seems like it is not loose enough to jump a
tooth on the cam, but think it needs to be tighter.

It's a new honda timing belt, can't be too long...

Any help here?

Thanks all!

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