Carburetor Needs Choked

[SirJeremy]

Lol ok, I will wait for him. Thanks for the reassurance on the valves, though. I have another set of heads, but I don't much care for head work or the cost to get it remachined. I also am not sure as to their condition, because they are attached to another engine I have. So that is a huge relief.

[willandrip]

Here is the best how to available;
http://www.litetek.co/Guide_MikuniBDST_ ... tSeal.html


Yet again many thanks to Litetek Blair.

[SirJeremy]

Awesome. Do y'all know of a good place to get a kit for the seals, or should I just Google a place or Ebay them?

[willandrip]

If your going to do the seals on the shafts then use the kit Litetek do ; He will sell you just the seals for the shafts.

They are cheaper than OEM and are proof against modern fuels where as Yamaha's wont be.

http://www.litetek.co/Carb_Kit_Yamaha_FZR600.html.

Reelrazor said check the seals........don't just change things willy nilly with carbs or anything on a bike for that matter.

Not only is it expensive but you can balls up some jobs and make matters worse unnecessarily.(changing them seals is not a simple job for a novice...)

Spray something like WD 40 over the seals with the engine running and notice if it effects the idle hang

How many miles are on this bike and have the carbs been butchered by those who are cackhanded.?

If they are worn/cracked and letting lots of air past then the spray temporarily blocks the air as a new seal would. .

[SirJeremy]

I'm still in touch with the previous owner, so I need to see when the last time he serviced the carbs was. As for the milage it has about 27,000 on the bike itself, but that number is inconsequential because the original motor was replaced with one from another bike after the first got water in it. The carbs did appear to be in REALLY good shape when I tore them apart the first time. All the seals and everything look immaculate for it's age.

[willandrip]

As for the milage it has about 27,000 on the bike itself, but that number is inconsequential because the original motor was replaced with one from another bike

But it does give an inclination of carb body wear.
It may be that the carbs were changed along with the engine but that is conjecture.

A bike with 54,000 on it has had twice the carb wear as one with 27.000 .

EDITED.

With the added information I doubt it will be the throttle shaft seals but the test will reveal the definitive answer.

[reelrazor]

as far as any air leaks....

get a can of wd 40 and while the bike is running lightly spray the boots one at a time......(by "lightly" I mean a tenth of a second)

does it rev? At which boot?

If not revving at the boots, do the same to the carb bodies...any revving? The butterfly shafts are exactly that..the shafts teh butterflys pivot on.

Its not so much their seals as the fact that they have no bushing-just the carb body material which can become oval after some time.

I still haven't heard if you have actually seen/heard this engine run correctly.

And, YES, poor intake valve seal will make proper carburetion really hard to achieve. The first symptom of this though, is very very tough cold starting, which I haven't heard a complaint about from you.

When it is running, are all four exhaust pipes getting hot?

What do the spark plugs look like?

[SirJeremy]

Whoa. These seriously measure kilometers on the odometer? That's neat. I guess I need to text the PO today and inquire about which carbs are on it. That also makes me wonder if I have the extra boots in one of my parts boxes. The boots I have on it were pretty badly cracked, so I put about 7 thick layers of plasti-dip over them. I had heard of people getting good results that way, so I figured I'd give it a whack. So I suppose my plan so far is: Get in touch with PO, spay the butterflies to test them, double check the boots, and if all else fails get a more current video up so you guys can see what's going on after that's all done. Anything I missed?

[willandrip]

Jeremy; my mistake ;the reading will be in miles.

Even so 27,000 is negligible.

[SirJeremy]

Sorry, I just noticed your latest post realrazor. I bought the bike about a month ago, and it had been sitting in a garage for 3 years prior to that. My post where I was able to get it to run without choking was the most accurate example of the closest it has ran. I haven't check all the pipes, but I will make sure to do that for you as well. So if the butterflies are leaking air, then I'll need to replace the affected bodies with the extras I have. It's not really hard to start now, but it could be better. It looks like a new video is in order. I can't work on the bike until Wednesday morning due to work, so I will try to get an update done then.