Compression check with cambelt removed?
#1
Compression check with cambelt removed?
Hi all. I recently took the cam belt and cam pulleys (non turbo side) off to change the union bolt for the AVCS valve on my 2006 Haw - because of a problem I've been with sluggish AVCS control on that side. Incidentally I thought there was (likely) a blocked micro filter in the union bolt, but actually there isn't any filter at all, so it was totaly waste of time. Now also I think something bad might have happened when I undid the cam pulley bolts, bad as in valve damaging bad....
So ,my question. With the cam belt off, and the spark plugs out of all cylinders, and all cams / valves at rest, is it possible to use the starter to carry out a compression test?
I'm guessing yes, but with the way I've been recently (with 'Doh' moments) I just want to check first!
Cheers!
So ,my question. With the cam belt off, and the spark plugs out of all cylinders, and all cams / valves at rest, is it possible to use the starter to carry out a compression test?
I'm guessing yes, but with the way I've been recently (with 'Doh' moments) I just want to check first!
Cheers!
#3
Cheers Joe. I think my faux pas was with everything still fitted I held the crank with a breaker bar and used another one to loosen the exhaust cam sprocket. I didn't think it had at the time, but now I'm wondering if caused it to skip a few teeth, because when I turned the engine to align the crank marks it made a catching sound and then a horric metalic springing back noise from that side. Strange though as it does not do it now the belt is off and you turn each cam. So think I've damaged a valve. I've used an endoscope and can't see anything obvious, what it's worth.
It was a proper head in hands moment!
So you reckon best to rebuild and try running?
It was a proper head in hands moment!
So you reckon best to rebuild and try running?
Last edited by Bazil_SW; 30 March 2019 at 11:36 PM.
#5
nope, the battery was disconnected, so no starter! Will see how it goes, just waiting for all the replacement parts to arrive. The mishimoto rad was leaking too, from the magnetic collector because it is a stupid design using rubber seal and PTFE tape.... so I took all that out too.
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