Kawasaki V-Twin running on one cylinder

pmsmechanic · Jan 3, 2015

Napi said:
Not sure what you mean by pulsing coils. As far as I know, this engine only has ignition coils. I was able to work on it a little this afternoon. Sprayed starting fluid around the intake manifold and no change. I then pulled the air filter hose from the carb. I sprayed a puff of fluid at the carb opening and the rpm's went up. So, I pulled #1 plug wire and sprayed just enough to keep it going for a few seconds on #2. This leads me to believe it's a carb/fuel issue. I pulled the carb and disassembled again. All the openings are clean. The only thing that is suspect is on top of the carb there is a small angled plate with a homemade gasket covering a passage and tiny holes that go into the carb barrel. This homemade gasket was there from before. While at it I spun the engine over while holding my fingers in front of the intake manifold. Both sides feel about equal and have really good suction. I'll inspect the carb more later. Guess I need to order a gasket or make one that's better than what's on there.

I can't find my exact carb online. All the one's I see have a different plate on top with 3 screws. Mine has a smaller plate and two screws . The numbers on the Nikki carb are 7620, the 0 could be and 8, 150047007 266-801 It's 2 barrel with a single bowl and one pipe on top for fuel inlet.

I'm thinking your on the right track here.

I believe what he calls the pulsing coils are the pick ups coils next to the flywheel that set off the spark for each side.

RandyT · Jan 4, 2015

From your testing of the carb with starting fluid you confirmed that one side of the carb is clogged. Most likely a clogged jet. With the carbs on todays equipment this is not uncommon, and in some cases requires replacing the carb since you may not be able to get to the point this is clogged, and clean it properly.

Napi · Jan 4, 2015

Yeah, this carb is not as bad as some. But apparently I didn't get it right the first time! I finally found my carb online. It was listed under the Husqvarna HUV 4421 which is the same as my XRT, the Carryall 295 and the bobcat 2200. It's part #103596801 I'll try some more cleaning, because this thing new is $300+ depending where you buy. One place had it listed over $700. What gets me is it's VERY similar to the Nikki carbs on Briggs V-Twins and you can buy them for less than $100. I think it's just a marketing thing.

brain55 · Jan 4, 2015

I've seen the intake manifold gasket fail at the cylinder head and cause the same type of symptoms. I had been of the impression that a vacuum leak was a vacuum leak, and would affect both cylinders, but I learned differently. I asked my local small engine shop about the symptoms when I was about to buy a coil, they just tossed me a pair of intake gaskets and told me that it would likely fix my problem. They were right.

Brian

Napi · Jan 4, 2015

Thanks for the ideas Guys! It turned out to be the gasket on top of the carb under that angled plate. It wasn't replaced before. I made one, put it all back together and seems to be fine now.