I've cleaned the carbs, blown out the jets and checked the diaphrams, every thing seems in order, and I wound all the air (mixture?) screws in until they seated, then wound them back out 1.5 turns. This was a bit of a ball park figure based on how they were set when I checked them, am I close?
Anyway, if you can help me out with some techo info I'd appreciate it. No real rush though, I rode it, but it ran like *@%^$*@%^$*@%^$*@%^$, lots of popping and very rough idle, so I did a compression check, results as follows:
#1 cyl 140 psi
#2 cyl 135 psi (so far so good)
#3 cyl 20 psi (crap)
#4 cyl 140 psi.
I tipped oil into #3 and tried the compression check again, it made next to no difference, so I'm guessing that I've got a buggared valve, I did the shims yesterday and the clearances are all fine, all on the looser side of the accepted tolerance (0.08mm) so unless there was some carbon build-up that has now gone and I just need to re-shim it, I'm guessing I've got a burned valve, or a stuffed head gasket. (there appears to be a slight weep at the front of the engine)
Ah well, it fills my days..................
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