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Well, the message that comes across in most of the responses so far is loud and clear. The camshaft has got to be replaced sooner rather than later.
But can you by a bit more specific. When you say ‘death’ does that mean a death from which resurrection is possible? E.g. by simply putting in a new camshaft?
My reasoning until now has been: okay, so the one lobe has worn a bit but all that means is that a bit more effort is required to get the exhaust gases out of the one cylinder. A worn lobe should not materially affect the time that the valve begins to open or that it fully closes, only how far it opens in between. Right, or not? Moving 5mm out of a possible 9mm is still more than half.
After all, the car still goes well. The only reason I checked the lift was because I happened to have read about worn lobes on this board. And I was getting bored because there was nothing more to fix.
@ Dinahmoe: I checked the lift with the tail end of vernier calipers (measured distance between some point on the valve stem and top surface of the head). Took one measurement with the valve fully open and another with it fully closed. Subtracting the two measurements gives the lift. Crude, yes, but I think accurate to at least the nearest ½mm.
Simplesimon
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