float bowl setting

[Eddie]

thanks for the reply, i think I may just take them off, ohh well, also I have two books, one is a clymer gt750 book and the other is the suzuki service manual on these carbs (I just found it , was looking for a long time, thats why I asked, I couldnt find the book) anyway I usually go by the book, and in this case one book says to measure from the top of the gaske(clymer) and the suzuki book says to measure without the gasket, and both give the exact same measurement? so which is it with or without gasket? OOps i just started a new topic on accident i meant to reply to my high speed stall thread sorry!

[pearljam724]

With either, as long as all 3 are accurately measured. The thickness of one mm for the gasket usually won't make a difference. If it still acts a little funny. You know your measurement is off. Come back and do it again without the gasket. Fortunately, the carbs on the Buffalo's are extremely quick and easy to remove. Should try dealing with it on a late model GS 450L. It is a bloody nightmare.

[Eddie]

Thanks for the info, I appreciate it, I hate doing things over and over but the first time I did it , I did not have the book as a reference. I was also wondering about the petcock service bulletin that had come out, it says the petcock can cause fuel starvation when at full throttle, I think I will check both, I checked my frame serial number and mine is a early 74 which it says is subject to this defect, you are supposed to drill the petcock vent with a bigger bit, I can't remember what size right now but I will have to check that as well, and your right these carbs are not bad to get off I just hate doing the same thing over and over, I just had carbs off to fix oil lines and now this......ohh well it could be worse, and it probably will get worse heheheheh

[pearljam724]

You're welcome. This is what happens when you don't make sure things are right the first time. Lol! Take your time next time. Not sure, about your particular petcock. But, if you drill a bigger hole. Make sure every little debris is cleaned out. Clean your petcock filter very shortly after you reinstall to get the debris you may have missed. If your petcock's gaskets are a little raggy. Now is a good time to buy a later model one. Then you can rule out the bulletin issue. It's also critical to add an inline filter on these old bikes. If you don't already have one. Buy a few and change it every few to several months. Same for cleaning petcock filter. They will clog quickly from a moderate conditioned tank. Causing fuel starvation also.

[Eddie]

Thanks for the help, i took carbs off and checked the float levels, they were off but very slightly not much, i adjusted all of them as close as i could get, next job is to take her out and see if it happens again, if it does i will drill the hole in the petcock, or i might just do that now, not sure, I have to work today so i probly wont. I still have problems with the far right cyl, it seems like it doesnt oil as much as the others, I have cleaned the lines re-built the pump and checked everything , but it still does the same thing, it doesnt smoke like the other cylinders, not sure why, but it runs good so untill it dies im going to keep riding and see what happens....

[pearljam724]

As a precaution. I like to add 2 stroke oil or Marvel Mystery Oil to my fuel. In addition to using 2 stroke oil in pump tank. I dont over due it. I just add 3 to 8 ounces for peace of mind. If you do this, its another good reason to turn the pump adjustment on the lower side. Otherwise, oil gets sprayed everywhere. Knowing your using too much oil. Id try using a different color oil to see if the pump pushes the old color through the lines. I like to use Marvel Mystery Oil due to being red. Where most 2 stroke oil is blue/green. Its also cheaper. I put that stuff in everything. Other than my oil pump tank.

[Coyote]

Marvel Mystery oil is magic stuff, and it's such a pretty red. We used to by that stuff by the gallon where I worked. Of course ATF is a lovely red also. It's OK for forks, but I wouldn't want it in my motor.

[jabcb]

Amsoil Dominator 2-cycle oil is red.

[pearljam724]

Marvel Mystery oil is magic stuff, and it's such a pretty red. We used to by that stuff by the gallon where I worked. Of course ATF is a lovely red also. It's OK for forks, but I wouldn't want it in my motor.

My granfather, who is a pretty mechanical savy old fart. Swears by it. He turned me onto it a long time ago.

[Eddie]

I know the oil pump pushes the oil through the tubes, I checked this multiple times when I had the pump on the test jug, Im thinking maybe one of the crank seals is bad and the other 2 cyclnders are burning some oil, and the far right cyl that i thought wasnt getting oil might be getting the right amount? not sure, at idle it smokes a little from the center and left cyl but not the right one or very little from the right one, then the smoke will go away untill you barely give it throttle and it will come back, it will smoke heavy when you open it up going down the road, but then sometimes it wont? maybe the seals are letting oil in at times and not at other times im not sure, I used to use marvel in my 66 chevy, before I rebuilt the motor, new valves, seats, etc... if you run 2-stroke through the carbs do you have to clean them more often? it sounds stupid but they werent meant for 2 stroke to be ran through them right? so I was thinking this might cause them to need a cleaning more than normal, escpescially if you let it sit a while? i dont know just wondering... other then a leak down test how can you tell if the seals are bad? my compression is only around 110/110/105, maybe its the rings? i put a light in the spark plug hole on the right cyl, and the top of the piston looks clean, light brown color, perfect if it was a four stroke i would think, and the other pistons are black on top, I have never had a gt750 so im not sure what normal is for it?

[pearljam724]

Supposedly, when they get bad. You will get major blow by out of your breather, consume and discharge large amounts of crank oil. Unlike, your descriptions it will smoke excessively at all times. Keep a close eye on crank oil level. I could be wrong, but according to that and your descriptions. I dont think your seals are that bad. If, at all. Running mixed fuel through your carbs, hurts nothing. If you dont trust that info, get the seals replaced. Its not a bad idea, regardless. They are 35-40 years old. And running it, if they are bad won't cause the bike to blow up. As long as the crank oil level doesnt get so low that its starving for oil. You would be fine.

[Eddie]

Thanks for the help, I was just wondering about the 2-stroke oil in the carbs, I know it wont hurt them , just wondering if it will gum up the small passages, I will keep running the bike and I will add a little pre-mix just in case, thanks for the info,