Fuel coming out of exhaust

[sethrobb16]

Sometime this week, I noticed my bike wasn't idling real well until it was really warm. I decided to clean the pilot jet and put on some in line fuel filters. I put my carbs back on left my petcock on "on" last night and went out this morning and noticed there was fuel dripping out of the front left exhaust. I took out the spark plug and gave it a few kicks and fuel came flying out. I thought it might've been a mistake when putting the carbs back together and so I pulled them off again, and reinstalled them. I let the petcock on for a while, no fuel coming out of the front of the exhaust anymore. Bike starts right up and idles, but fuel is dumping out of the exhaust while running. What is confusing me is that when I pull the spark plug, it doesn't seem wet at all. Also, after warming up the bike, one exhaust gets super hot, the other doesn't. I took it for a ride, and when I got back, the pipe that was cold was now hot and the one that was hot was now cold. Honestly just very confused and not really sure what the problem is. My floats in my carbs weren't an issue last week and my float moves fine today when I checked up on it. It won't let me uplaod a picture but there is a puddle of brown gas-smelling liquid that is coming out of my exhaust

I've checked spark and it's strong and blue. I'll check sometime to see if the pilot jet just clogged right up again. There's no rust in the tank, but the liner is flaking. I don't have a compression tester, but it blows my finger off the cylinder head when I kick.

[badgereng]

Any issues with your pilot jet should only affect tickover. By the time you’ve just cracked the throttle, you’ll be off the pilot circuit and into the needle jet / jet needle and progressing towards main depending on how wide you are opening the throttle.

That sort of counts out the pilot for the issues when you have been riding.

Personally I’d go thru the carbs again checking everything for cleanliness at least twice. As you’ve mentioned, the liner is giving up so a potential cause.

Also don’t forget the fuel filters usually have a flow direction so make sure they are plumbed in correctly.

The initial problem was a poor idle and has got worse since a carb intervention. Don’t stray too far from the carbs and the work you did before exploring other avenues.

Good luck

[jabcb]

Does the petcock leak or did you leave it on prime?
Had a 73 GT250 with a bad vacuum petcock. The slow leak went into the crankcase and eventually started dripping out of the exhaust. For some reason it happened on only one cylinder. Fixed the petcock & everything was fine.

Once you’ve flooded the crankcase, you have to run the bike for a while to clear it out. No point in adjusting the carbs until that is done.
I don’t remember if the 73 GT250 has crankcase drain bolts or not.

If you used one of those wire jet cleaning tools, I recommend replacing the jets. Very easy to ruin the jets with those FPOS tools.

[sethrobb16]

I left the petcock on "on." A while ago I replaced the stock petcock with a manual petcock and sealed the vacuum port it was connected to.

How long do you think it'll take to get out of the gas out of the crankcase? It was flooding all night. I didn't feel good about running the bike yesterday so I only let it run for 20 minutes or less.

What about the uneven cylinders?

[jabcb]

Would run uneven if one cylinder had the crankcase flooded, of if some of the jets are damaged.

If you damaged the jets with one of those FPOS jet tools, no amount of running will get the cylinders in balance.

Some years ago I tried using those FPOS tools & failed badly, which is the reason for the FPOS designation.

[sethrobb16]

I didn't use the wire cleaners specifically, but I used some wire that I had laying around. I ordered new pilot jets and am also going to try increasing the main jet size since I'm using pod filters too. I'll get back when I install them

[sportston]

Sounds like your float jet isn’t sealing well. First, check for dirt in the carb and fuel line. Fit a filter, if you haven’t already. Check the jet and seat for wear; if OK, then check and set float level correctly. While apart, check float isn’t porous and full of fuel. If it still leaks after that, check fuel tap diaphragm for tiny holes.