Well this is disheartening

[Seacat]

I got the carbs back on the bike today. (Who designed this set up by the way? The Marque De Sade?)

Once I got everything hooked up and checked for leaks I started hitting the starter.

It took a bit but the bike did fire and it ran. Oh my yes it ran but it ran rougher than a cob. At first I thought this was due to the carbs being out of synch. but then I started checking things out. The pipe from number four was once again much cooler than the other three.

The language that came out of me when I noticed this scorched the paint off the walls of the carport and even surprised my wife a bit. This was why I had pulled the carbs in the first place.

Well now it's back to the drawing board I suppose.

On Tuesday I'll start the bike again and let it run for a bit before yanking the tank.

Once more I'll check the compression, (Which was just fine last time I checked it.) as well as the plug and the spark.

I don't think it's the coil because the other cylinder is firing just fine.

Oh and the cylinder is firing just fine at higher RPM's.

Any other ideas?

Cat

[MadRatt]

Seacat,
usually the prob. you describe is that the float bowl either needs adjusting to allow more fuel in, or your float needle is sticking, check and make sure your floats are all set to specs. other thing to check is the sparkplug cap. they screw onto the plug wire and might need to be tightened, or cut the plug wire back a bit not far and re screw back on. check spark on that plug

[CB750Winger]

   My 75 did the exact same thing after carb overhaul, new points, plugs, condensers, plug caps. Come to find out, one of my new spark plugs was dead, no spark. Check the other things tho. Could be float, plug wire or cap, slow jet plugged.

[Rod_Knockin]

my bike was running great after a few carb cleanings. Until the other day I hammered it to get around a truck. When I let off it started running like dookie. #1 cylinder running cold. I guess I sucked something into the low speed jet. Off come the bowls.....again. The low speed jet and idle circuit seem to clog easily. They exhibit symptoms cold dead cylinder until the r's come up and then the cylinder kicks in. My issue before (#2 carb) I had to remove the mixture jet and clean out the passage for that to get it to run right.

[Tech78]

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