Help with my carbs

[Parr8hed]

I told you all to be ready for alot of posts from me! Sorry to be a pain. I got the needle seats out. Really messy, I just used a socket and rachet. I got the mains out and the pilots have penetrating oil soaking in them. My main jets were plastic? Does that sound right. I know that the guy that set them up for me re-jetted to comphensate for the 4 into 1 with no baffles and the indy filters. Kinda threw me off b/c the tech sheet said to look for brass things.

but all is going well.

travis

[Parr8hed]

OK, carbs are put back together. I just have to do the petcocks now.

When I took out the needle float valve seats, the old ones had little mesh screens that were dome shaped over the end. The replacement ones from the kit did not have the screens. Is that OK?

Also, if I did not take the carbs off of the rails do I need to reset the heights of the floats?

Thanks for any help.

[randy]

Travis,

Transfer the screens from the old valves to the new.

[John]

You will need to check the float height just to be safe. You may not have disturbed the setting, but was it correct before you started the work? By all means, put the screens on the new floats. I see you have a 78. Those have the threaded float valves. They are much easier to remove than the push in valves that are sealed with an O ring. It is easy to distort the push in valves when trying to remove them with a pair of pliers.

[Parr8hed]

how do the screens come off?

[John]

Just pop em off with a small screwdriver.

[Parr8hed]

Got them off easily. I have everything cleaned and back together. Even rebuilt one leaky petcock. The other petcock will have to wait as the kit should be here tuesday. I have the tank back on and am ready to add gas and fire it up, but it is RAINING!!

It was perfect yesterday, almost 60 and sunny! I hate this weather sometimes. I will let you all know how I did on my first cleaning/rebuild.

Travis

[Parr8hed]

OK, it runs. Sounds like it is going to run really good, problem is that the idle is very high. Somewhere around 4,000 rpm. I did not touch any adjustments. Any ideas. Not sure how to bring the idle down.

Travis

[John]

There is a large serrated wheel between # 3and 4 carbs. That is the idle speed adjusting screw. Turn the idle down whit that. It is much easier with the tank off, though.

[ratbyk]

Possibilities:
1. Outer throttle cable not positioned into support sleeve back by carbs.
2. Clamp that supports the carb at the intake manifold out of position and fouling the common throttle shaft/spring.adjustment screw.
3. Idle adjustment screw needs to be backed off 1/2 turn.
4. Outer throttle cable needs adjusting up where it enters the (twist) throttle handle.
5. Major air/intake leak at one of the carbs.
6. Carbs need to be synced.
Ken/Sooke

[Parr8hed]

Hey thanks guys, I am at work right now, I will check it out when I get home in the morning. I have to wait until it is "wake up time" for the neighbors though!

Travis

[Parr8hed]

Thanks, it was the throttle cable by the hand grip. Slack needed to be let out. Once she idled down it was apparent that the motor was running pretty rough. I think that I will change plugs, but alot of backfiring, sputtering smoke (white). Hard to get it to idle evenly. I am toying with the idea of trying to synch the carbs myself, but do not have the tools (meaning synchronizer). I have to call the shop tommorow and see what they charge, and when they can get to it. I know that you are going to tell me that I should go buy one and do it myself, but I am starting to feel as if I am in over my head? I guess that I can always try, what will it hurt?

Travis

[Czekus21]

carb syncro's can be bought cheap from JCW or Denis Kirk. The murcury ones are the best from what I understand. I bought the vacuum gauges so I can use them on other applications.

[Parr8hed]

IT RUNS! IT RUNS! I changed out the plugs and she ran much better. They continue to be sooty. (is that a word). I think that a top end job is in the near future. I took her to a shop in southern Louisville that was recomended by a friend that races GSX-R's. The guy there is going to look over her for me and synch the carbs. By the time I had gotten to the shop she was running much, much better. The shop is about 20 miles away from my house. I guess that I did something right?

Thanks so much for everyones help, and putting up with my endless questions. Who knows, maybe next year a big bore kit and a 2nd gear fix?

Thanks again,

Travis

P.S. Go CARDNIALS!!! Final four whoo hooo.

[TopCatGr58]

Hey Travis,

Congrats on getting it all back together and essentially functioning properly, and yes, sooty is a word, at least on this forum it is!

What rpm range do you run the engine in? If you mainly putt around not going much over 5K, and run it in the lower rpm bands especially in higher gear, then you may not be running it "hot" enough to effectively burn the fuel? Also, what's the compression values? How many miles are on the engine? Sooty isn't necessarily a result of oil blow by.

First, try running some SEA FOAM in the gas tank for a while, and also run it a bit higher in the rpms. Then take it out on the highway, run it at 5K for about 10 minutes, then Kill the engine, coast to the side of the road, have a spark plug wrench with you, pull a few plugs and inspect them. IF they are still sooty, then it's running too rich, and you may need to readjust the floats a bit higher to lean it out a bit before thinking about changing jets!

If it's not sooty with the throttle chop, but then after riding and bringing it home running in the lower rpms, again pull the plugs. IF more sooty then, then you may need to turn the Pilot screws in a turn or part of a turn to lean out the idle circuit.

Just glad you weren't smoking that stoagie while you worked on the carbs......were you!?
T.C.