My left cylinder on my CA77 has died...I have plenty of spark, and the Right cylinder runs fine, and my compression is great; but the Left cylinder has dropped out - I'm getting fuel, or else it wouldn't run - but would this indicate a carb/fuel problem?
I guess it wouldn't hurt to clean the carb - it's been a while - but I'm just trying to confirm what I think it is.
I also seem to have a bit of a hard time getting the idle dialed in, which makes me think its the carb as well; the Right side was Very dry and sooty(rich), and the Left side was...nothing. The plug was fine. Made sure the gap was 0.6, got a good (Great, actually) spark, but no joy.
so I turned the mixture screw out quite a few turns to try to treat that rich condition, and it got better, but I think I'm missing something basic, here...
Would you say I'm correct?
Cold Left Cylinder
A brief investigation has revealed my idle jet was clogged - that might have done it.
That Right Side Hot, Left Side Not problem though has got to be timing...the carb and spark are fine. A PW22 carb float height is 26.5mm - is that from the carb body, or from the carb Edge? The Book shows it being from the carb-body Edge - but I may have measured from the carb body/bowl gasket...which one is correct?
Nah - it seems to be a dead spark plug. I switched out the plugs and started it up. The side with the dead plug (formerly the Hot side) was just warm, but not Hot. The formerly Hot side was just Warm.
I picked up some NGK D8HA's and also some Autolite 4173's, and plan to do a comparison test - anybody got a favorite, or does one have an advantage over the other?
I recommend the NGK .
Years back I bought some AC and Autolite plugs because they were CHEEP! Neither brand ran more than 20 miles and fouled out. Never a problem with that bike with NGK plugs. .................lm
Yeah, I put the new NGK's in this white one I'm trying to get dialed in just Because, and barely had to touch the starter and she came to life. The timing was Right On and both pipes were too hot to touch, which was nice. All that sooty smoke went away too. It sounds like a 900 on the table.
I might use the Autolites on the black CA77 I have, just to see, as soon as I figure out if I goofed up the timing sprocket when I rebuilt the engine - the newly done valve seats were pulling 150 lbs pressure when I had them done and vacuum tested, but I went to start it and only have about half that in each cylinder - I think I may have put in the advance sprocket in the head wrong, unfortunately. I *thought I had it right, but, well, there ya go... Oh, and 'cheap'?? The Autolites were $3.69 apiece; the NGK's were about a dollar cheaper! Yes, I was shocked...(Advance Auto).
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