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Loud Tapping, Crappy Idle, Not Building Boost

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95TalonOwner

15+ Year Contributor
1,311
27
Oct 18, 2005
Milwaukee, Wisconsin
Just happened to me today. Sounds like a lifter or something under the valve cover. Loud ass tapping and the simptoms described in the title. What could it be? Could I have lost a rocker? Or maybe the timing jumped?

Oh yeah, this is on my 90 laser rs-t.

Thanks for any and all input.
 
Well I'm in the process of taking the timing cover off to check timing and here is what the timing belt looks like...

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Sorry the pic is so crappy, I took it with my webcam with my laptop upside down.

So what do you think is under the timing cover? Broken balance shaft belt caused the timing belt to shred a bit and jump timing? I'm hoping like hell the valves are ok.
 

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YIKES! alright well the only thing i would do is pull the bottom timing cover, see if you can see anything busted, then try and line up the timing marks, if there off by a few teeth u might need a head job...GOOD LUCK!
 
Pulled all the belts and pulleys off and got the timing cover off and as I suspected, the balance shaft belt snapped causing the timing belt to shred on the edge and the timing jumped. I retimed it and started it up and yep, it runs but I need a new head. Oh well.
 
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