Bad Tick/Vibration Noise coming from crank/metco 4lb lower - Suggestions?

[peteys101]

Hey guys,

I need some diagnosing help. The squeak is a bad idler bearing im replacing - but the rhythmic knock is not sounding so good any ideas?

[video=youtube;jwgQe0j7vs0]https://www.youtube.com/watch?v=jwgQe0j7vs0[/video]

 

[Stage 4.6]

vid is kind of short, hard to tell what it is? I did here the bad idler squealing, did you just have the 4lb pulley installed?

 

[peteys101]

no have had the 4lb on for about 4,000 miles - longer video posted - the injectors cant be that loud right? and the noise is pretty clear that is coming from lower in the bay....

 

[Shadow Grey 03]

Take the blower belt off and start the car. Don't need to run it long though. If the noise goes away it could be the coupler/bearings in the blower snout.

 

[03' White Snake]

Check your fan. They are known for going bad. Mine did and sounded just like that. Rockauto.com had good deals on them.

 

[Stage 4.6]

Take the blower belt off and start the car. Don't need to run it long though. If the noise goes away it could be the coupler/bearings in the blower snout.

I would definitely try this idea, I had some crazy tapping sound and it was my belt tensioner?

 

[peteys101]

Blower belt off = no noise ... ordering new tensioner today will update once i get it installed.

 

[Shadow Grey 03]

Blower belt off = no noise ... ordering new tensioner today will update once i get it installed.

Hopefully that is it. If not, the blower snout might need a rebuild.

 

[Steeda30]

This sounds exactly like what mine sounded like when my metco lower hub had somehow loosened itself and was oscillating slightly. I can't remember if it was the metco hub or the balancer that had become loose / not flush. If you look very closely at the balancer / hub while the car is running you should be able to see the wobble.

I'm not sure how long mine was loose / slightly wobbling before the sound started but 15k miles later (88k total miles) the crankshaft snout sheared off at the timing cover as I shifted 3rd to 4th.

I can only imagine the snout was fatigued by driving who knows how many miles with it wobbling before it made any noise.

 

[Dadarkside]

Hey guys,

I need some diagnosing help. The squeak is a bad idler bearing im replacing - but the rhythmic knock is not sounding so good any ideas?

[video=youtube;jwgQe0j7vs0]https://www.youtube.com/watch?v=jwgQe0j7vs0[/video]

My car is making the exact same noise. Took the belt off and the car ran quiet no noise, replace all pulleys still the same noise i get to the belt tensioner and while the car is running the belt tensioner was moved up and the noise stopped. So i think mine is the belt tensioner haven't changed it yet i bought a belt tensioner from autozone though. Let us know if changing the belt tensioner does the trick. Also let me know where did you buy yours from. Here is a my video drives me crazy. https://www.youtube.com/watch?v=-3g0K6slxcI

 

[peteys101]

Wasn't the belt tensioner :shrug:, Im pretty sure the snout needs a rebuild from bad coupler bearing..... So i bought a whipple 2.9 will update if that doesnt fix it. Interesting about the lower bracket/pulley getting thrown out of alignment will snug all that up as well during my 2.9 install.

I got the thump racing belt tensioner.

 

[Dadarkside]

Wasn't the belt tensioner :shrug:, Im pretty sure the snout needs a rebuild from bad coupler bearing..... So i bought a whipple 2.9 will update if that doesnt fix it. Interesting about the lower bracket/pulley getting thrown out of alignment will snug all that up as well during my 2.9 install.

I got the thump racing belt tensioner.

Ok thats good information. Hope it clears out.