I rebuild my carbs this week. upon reinstall ski fired right up, however the next day it would not start. I thought weak spark, but I guess spark is fine. If I shut off fuel supply, remove the plugs and clean cylinders of gas it will fire up with some starter fluid and run, but as soon as I put on the fuel supply it dies, so I assume i did something in the rebuild that is allowing too much fuel into the carbs.. These were cheap rebuild kits may be to blame... thoughts?
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Carbs flooding after rebuild
- Thread starter davebolo
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I took them apart again and needles appear to seat. and when we say needle, I am assuming we are talking the popoff not high/low speed needles, right? I can see the gas flooding into both carbs when off.. trying to determine if my issue is needles or diagrams. and if diagrams is it the fuel pump ones? could it be the low speed or high speed needles too? your help is appreciated....
Cheflen
Active Member
I rebuilt mine with the cheap kits and it fires right up at the start of each day, but after I have it running a few times it took forever to start, I thought it was the needle and seat but swapping it out did nothing. I then switched out the diaphragm with a genuine mikuni diaphragm and it fires right up in half a crank every single time. The worst part about the cheap kits is the diaphragm, it just opens the needle right up as soon as it gets the slightest vacuum from the engine, so it'll just flood all day. I highly recommend just getting a mikuni diaphragm for about 15-20$ and swapping it out, takes about 5 minutes, you can do it with the carbs still on the engine if you're careful. Just gotta pull the air box off and get a stubby screwdriver and pull the 4 screws off and switch the diaphragm out and you should be good to go from there.
Dr Honda
Well-Known Member
A lot of the aftermarket diaphragms are junk. I've noticed that the bellows section will actually hold the arm.
When it comes to carbs... critical parts have to be OEM. I don't know how these aftermarket kits have been around so long, with as bad as they are. When I had my shop open, I would get a case of the windrosa kits cheap. But I was just using them for the filter, gaskets, and O-rings. Everything else would hit the trash.
When it comes to carbs... critical parts have to be OEM. I don't know how these aftermarket kits have been around so long, with as bad as they are. When I had my shop open, I would get a case of the windrosa kits cheap. But I was just using them for the filter, gaskets, and O-rings. Everything else would hit the trash.
Cheflen
Active Member
Yep that's what I noticed about mine, the bellows just held the arm wide open
To all that replied, thanks so much.. so here is the update. I had some carbs from my old 93, so for giggles as a test I took the diagrams, needle valve, etc from those and put in my 95 with the flooding issue. wala!! starts right up, idles and no more flooding... so as suspected, the cheap kit parts are to blame. Lesson learned.. thx again to all.....
OSD marine is all genuine Mikuni parts. If you got them from them the parts are correct.
cole701
Member
Thank you.... Then I must have done something incorrect when I rebuilt them....
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