Well, you have bad compression on #2 so I'd start there. could be lots of
things. I'd take Normans advice and park it and pull the head, probably you
will have to drop the pan too.
One last sanity check - does the clatter go away when you step on the
clutch? You could have a loose piece on your clutch cover if it does this.
Good Luck! Let us know what it is.
Alan
On 5/18/08, Steve B. Gerow <steveg@abrazosdata.com> wrote:
>
> Per Mike Salter's suggestions, ran some tests:
>
> 1) nothing unusual visible thru sparkplug holes; no bits on small magnet
> inserted thru each hole.
> 2) Unfortunately ruined pertronix trying to short plugs to ground, so
> shorting cylinders wasn't performed.
> 3) compression front to back: 168-130-165-163-167-162
> 4) tested leakage on cyls 2 & 4--#2: substantial hiss coming from pushrod
> holes. #4 barely audible hiss. No hiss audible from intake, exhaust and no
> bubbles in radiator.
>
> Therefore it seems there may be a piston problem. Next step will likely be
> to pull the head.
>
> Received suggestion from a BJ8 owner, Frank, who'd had sticking tappets
> which he said caused a similar loud noise. Will be researching that one
> before yanking the head.
>
> To Len: I adjusted the valves recently and there's no problem with the
> crank
> nut.
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