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Discussion Starter · #1 ·
So, I was ridding home the other day from work when all of a sudden the bike started running like crap like it was running on 3, less than 2km from home. My ride from work is roughly 46km one way. So I decided to open'er up and see if it clears up, and for the most part it did until I came to a red light and it started running on 3cyl again. This time I got a smell of gas while I was stopped, so I new I was either leaking or something.

I had just filled up prior to leaving work, and it was the hottest I've ever ridden my bike at 35°C plus high humidity. Prior to filling it, I had to switch to reserve, and that's where I think my problems started. I never usually let the gas get down enough to require using reserve, but my Dad used my bike a few times and put on more km than my usual commute does, so i didn't make it to the gas station in time.

Anyway, I think some dirt in the bottom of the tank is now stuck in the #1 carb float. When I got home, I turned the gas off and parked the in the garage and went inside for a few minutes. I went back out and there was a gas dripping from the bottom and a small pool under it.

So the next day I pulled the plug, lit the gas on fire with a lighter to dry it up and popped it back in. The bike took a bit to get started, but was seemed to be running fine so I shut it down and put it back. Less than five minutes later there was gas under the bike again so this time I turned the gas off and tried to start it but it was already hydrolocked. So into 6th gear it went and pulled the bike backwards to clear the gas. Got it started again and this time I ran the carbs dry.

So what are the chances there's just some dirt in the float seat?
 

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Discussion Starter · #5 ·
Ninexz said:
what is this "gas" of which you speak?
Gasoline? The stuff you put in the Fuel tank ;)

I got the carbs off. I need new carb boots pretty badly. One is torn, one is cracked, ones got a piece missing... I though, "how was my bike even running before?" Also, one of the rubber O-rings around the top of the carbs wasn't seated properly last time whoever put them together.

These are the right ones for a '92 MC 22 right?
http://cgi.ebay.ca/HONDA-CBR250RR-M...cycle_Parts&hash=item2ead309616#ht_1697wt_934
 

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Discussion Starter · #7 ·
All done. Tore them down, cleaned with carb cleaner, blown out with compressed air and reassembled. I definitely need new carb boots, but for now it runs way better than it ever did, and I thought it ran pretty good before. I just put a little RTV silicone on the inside of the carb boots before putting them back on to help them seal.

There was lots of crud that came out of the bowls, and the adjustable mixture screws all had a little black gunk on the end of them. It still doesn't like the throttle being cracked open without load as there's a whole bunch of misfiring, same as before, but has WAY better throttle response. I haven't been out on the road yet. We'll see tomorrow.

Oh, and I didn't find any obvious obstructions in the float valves. It must have cleared itself out while I was flipping the carbs around.
 

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Discussion Starter · #14 ·

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Discussion Starter · #16 ·
Matt said:
looks good buddy.

#7 on this page

http://www.cmsnl.com/honda-cbr250rrl-mc22-japan_model14665/partslist/E02.html
Nice. Thank you.

Have you ever ordered directly through that site? The ebay link works out to roughly $90CND

I see these ones are significantly cheaper.
 

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I have ordered through there. i had some troubles based on availability of parts, but they looked after me by giving me half my order when i emailed them, then not charging me for delivery for the other half.

i do have one complaint. it comes from the netherlands, and shipping to aus was just silly. i could have gotten the parts locally for the same price. and not have to wait almost two months.
also, they don't estimate shipping costs, you just find out after they bill you, so you can't know exactly how much it is to compare.
 
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