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« on: 22 August 2006, 22:07:45 »
I also had a cambelt jump/slip four teeth on my V6 Omega last April. Sympton was car would start but rattled awfully. I stopped engine at once.
I stripped it down and found the cams were 4 teeth ahead of the crank. I took advice from Dr. Omega on the yahoo site and proceeded more or less as you plan, but allow me to elaborate anyhow.
With engine at TDC on no. 1 by bottom pulley mark, I removed the old cam belt. I rotated the crankshaft 60 degrees anticlockwise to locate all pistons out of harms way. I then rotated all camshafts a couple of turns each, using a socket on the sprocket nuts, checking that I felt resistance at all times - I did. This told me that no valves were bent - good news.
I next set all cam sprockets with the alignment marks aligned with the notches in the rear cover. Then I rotated the crankshaft 60 degrees clockwise back to TDC.
I then put on the new pulleys and belt as described in Haynes and Total Vauxhall October 2005, using the special tools. I am sure that the site DVD tells you how to do this, mine has just arived but I have not run it yet. I tensioned the belt as instructed, with the aligment marks in line. I removed the special tools and rotated the engine two turns. I checked that the bottom pulley and cam sprockets all still lined up. They did.
I reassembled ancillaries and paused for a cup of coffee. I then connected the battery and started the engine. It ran sweet as a nut.
I had made one mistake. After a week or so the EMS light came on, and the fault was eventually traced to the knock sensor lead having been located on the wrong side of the auxilary belt tensioner and having been worn through by the aux belt. Took it apart again, resoldered the knock sensor lead, reassembled, and all was well.
It has run well ever since.
Good luck,
Terry
