motor & muffler mounts

[Sunliner]

On the '97 Blazer LS, 2WD, 4.3...

Two things the manual is a little vague on...

How many engine mounts are there?

Also..is there a way to tighten the muffler mounts? I tried the "strap" that goes around the back of the muffler, but it's tight already & the thing still rattles.

As always-thanks!
-Mike

[BlazerLT]

The muffler is rattling?

Or is the cat rattling?

[Sunliner]

I'm 99 % sure it's the muffler.
When it's rattling, I can make it stop by putting very slight upward pressure on it by hand.

I figure that if it were loose catalyst in the coverter, it wouldn't quiet down quite that easily.

-Mike

[BlazerLT]

Originally Posted by Sunliner

I'm 99 % sure it's the muffler.
When it's rattling, I can make it stop by putting very slight upward pressure on it by hand.

I figure that if it were loose catalyst in the coverter, it wouldn't quiet down quite that easily.

-Mike

Don't rule it out quite yet though, but you are probably right.

Replace the muffler.

[blazee]

Originally Posted by Sunliner

On the '97 Blazer LS, 2WD, 4.3...

Two things the manual is a little vague on...

How many engine mounts are there?

Also..is there a way to tighten the muffler mounts? I tried the "strap" that goes around the back of the muffler, but it's tight already & the thing still rattles.

As always-thanks!
-Mike

You have two motor mounts.

Is the rattle coming from inside the muffler or is the muffler vibrating against something?

[Sunliner]

Originally Posted by blazee

You have two motor mounts.

Is the rattle coming from inside the muffler or is the muffler vibrating against something?

Not entirely sure; what I've found so far is that with the truck in gear (someone inside on the brakes of course) I can apply very slight upward pressure on the muffler & the rattle stops. Doesn't take much pressure at all.

[blazee]

You need to check it out a little closer. If it is just rattling against something, you may be able to adjust or shim it and make the noise stop.