loud grinding noise (coffe grinder)

[Anonymous]

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

[Big T]

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

[Anonymous]

Tear down inspection.
You'll need an overhaul, I'm sure.

[Anonymous]

oh ya rebuild !!!!!!!!!!!!!!!!!!!!!!!!!!! winter project

[KEITH KRAUSE]

oh ya rebuild !!!!!!!!!!!!!!!!!!!!!!!!!!! winter project

At least you're taking it well!

[Dark Jedi]

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....

[Anonymous]

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