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loud grinding noise (coffe grinder)

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

Guest
81 1100E, 45,000 miles

while going at about 3 to 4k..... i suddently hear that lound grinding noise.... like loose bolts being tossed around..... pull off, oil is up to level.... restart, still there..... finish the drive home, about 2 blocks.... idles at about 700 vs 1100.....

compression gives 100 on all 1,2 and 3, but 4 is 60 (3 tries on each)

cams are moving... what next

suggestions

Michel

81 1100E
 
It could be a lot of things, bad tensioner, spit up a valve shim, camchain

But with pressures only at 100 or less you're gonna need to tear it apart anyway - should be 120 or more across the board
 
Make sure you compression test with the throttle wide open to get an accurate reading.

The Cylinder can't compress the air if it ain't getting in....
 
yeah.... i forgot to open the throttle.... but the 60... shows that we have a problem

winter project...... can't wait.... it is going to be an evening project....

i had to drive the cage this morning... cannot stand it.... parking woes....

let you know what i find w pict.

cheers

Michel
 
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