89 Cougar XR7 knocking sound?

Coniferking

Registered User
I have a 3.8 v6 89 cougar that has a sound of almost like marbles rolling in the supercharger area coming out of it, although i am not sure if it is the supercharger. we have had issues with the Crank shaft sensor for firing in the past, and its been a big issue. the car is also running very rough. Any thoughts on what it may be? it doesnt sound like an engine knock but it is this horrible noise that definately means something is wrong. thanks for the help
 
The marble sound is the coupler in the supercharger, I just got a solid one off ebay with the sealer and oil. Search M90 Snout. Get the front seal from vbaileyent1 off ebay as well.

Justin
 
Take supercharger belt off, run engine at idle is knocking gone? Then its supercharger, if not its engine and most likely a rod.
 
"Marbles in a coffee can" sound is most definitely the supercharger coupler....

You might as well replace the snout seal as well.....
 
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