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Air /gas blowing out of left carb (Valve issues??)

Started by mjn12, September 12, 2006, 06:19:31 PM

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mjn12

Nah, haven't messed with that yet. Maybe if I'm bored this weekend.

mjn12

#41
So I checked compression - the gauge reads 110 on both cylinders (this is lower then spec but I don't think the 20 dollar gauge is accurate).  Pressure holds until I hit the bleeder on the gauge so I don't think I"m leaking anywhere

Idleis still HORRIBLE. Bike roars once its up past 5k but I can't get it to run consistently below that.

With the #4 washers on the needle the bike seemed way to rich.  I could smell the gas in the exhaust, mix screws weren't helping.
I pulled the washers out, this helped a little, I'm letting the engine cool a little, then maybe try playing with the mix screws a little more, maybe I'll have to take them out past 3 turns  since I don't have the washers on.  Grrrr.

I'm guessing that its that o-ring that I was questioning that is giving me the problems. I'm ordering rebuild kits tonight. After those are actually rebuilt I'll know its just tuning.

Any carb experts in the MD area? I'll buy you beer, food, hookers, whatever if you can come here and fix this.

mjn12

First off, many thanks to wrecentwryder for hooking me up with some correctly sized washers.

I went to see if they would fix my problem yesterday and before dropping the washes in I tried to start the bike one more time to make sure I didn't just need to fiddle with the screws a little.  However, instead of starting the bike just cranked a few times an eventualyl backfired. I tightened the fuel scews to 2 turns and it ran for a little while.

After "balancing" the carbs I found out that my "balancer" had a bunch of water pockets in one of the tubes, close to where it plugs into the carbs. This was before I rebuilt it so that it would not suck water into the carbs.  This water  in the wrong place would make it extremely innacurate and make me send my carbs way off balance.  If I remember right i had to turn the screw 2-4 turns (can't remember exactly now) to get the old balancer to show them as balanced.

Now I checked spark when i was testing compression, and compression was ok and i saw nice blue sparks on the plugs so I'm assuming electrical is ok. I knwo the valve clearanecs are good since I just did those, The carbs were just cleaned and the gas that comes out of the bowls is nice and clear (even though my fuel filter is just starting to look a little ugly).

I can't imagine my problem could be anything but carbs.  Since the jets are new  and clean, needles are shimmed 1mm with #3 washers Fuel flow is good and float levels look right.  Could it be possible that the carbs are so far off balance one is running crazy lean and one is running crazy rich enough that neither will start and all I get is a build of gas from the rich one and an eventual backfire? (Man its loud too.  My ear must have been ringing for 3 hours when i was kneeling close the the exhaust and trying to start and  it did it).

Btw, thank you all for bearing with me. If you are getting tired of hearing about this imagine how I feel. I'm pretty sure hair is falling out of my head because of this. I'm only 20 so thats not good.

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