Gs850Gl bogging at speed.

[Steve]

Further testing will begin once these storms are gone. I am soaked to the bone.

Storms? What storms? There are no storms.

Oh, wait, you are probably nowhere near me. Where are you? There are no clues in your profile.

There might be one of us somewhat near you and can help diagnose.

.

[stoy75]

Ohh sorry. Southwest PA. Johnstown PA to be exact.

[Steve]

Thanks for updating your location.

Now, just put a short sig in there showing what you ride so you don't have to remember to mention it every time, and you'll be set.

.

[stoy75]

Done. Any ideas on my issue. Called the dealer and they said. "Its 30 years old dump some seafoam in the tank and come look at my new stuff.

[Steve]

Called the dealer and they said. "Its 30 years old dump some seafoam in the tank and come look at my new stuff.

When you get there, ask if he will trade straight up.

.

[stoy75]

I doubt it lol. Just wish I could fix this issue and enjoy the bike.

[stoy75]

Anybody? I'm getting desperate here

[BassCliff]

Hi,

Have you done this exactly as described?

Mikuni BS(CV) Carburetor Rebuild Tutorial
(BY Mr. Nessism)


Thank you for your indulgence,

BassCliff

[stoy75]

Yes that is the info I used. It made it me proof.

[BassCliff]

Hi,

Yes that is the info I used. It made it me proof.

I don't know what that means.

If you are absolutely sure your carbs are clean then make sure the intake system has no leaks, the carbs are adjusted properly (float height, pilot screws three turns out, bench sync'd, etc), then perform a vacuum sync. Do you have good spark at all the plugs?


Thank you for your indulgence,

BassCliff

[stoy75]

Sorry. Yes I did it. It was a pun on idiot proof.

[kjsamm]

A good test to do would be to take your tank off (with the fuel lever on "ON") and set it in your garage overnight to see if the petcock leaks.

Then, you can hook up your vacuum line to the petcock (with the tank still off) and apply a vacuum to it (suck on the end of the line) to make sure that fuel flows out of the petcock when a vacuum is applied.

New rubber parts (vacuum hoses, fuel hoses) isn't a bad idea for a 30 year old bike in general, especially when fuel/vacuum hose would only be a few bucks.

I know this was mentioned awhile ago but, this method would not work. unless the gas had JUST leaked from petcock you would not find fuel on the ground as it evaps to quickly.

on another note I had the same sort of problem after replacing my exhaust. I tried everything, finally going up one size on main and pilot jet and shimming the jet needle fixed problem. And proper setting on mixture screw.

[stoy75]

I don't know it is was rejetted for the 4-1 exhaust that was put on. It looks like its been on there a while.

[stoy75]

How would I know if it was rejetted?

[Steve]

How would I know if it was rejetted?

You will have to remove the carbs, drop the float bowls and look at the numbers on the main jets.

Stock jets on an 850 are 115.

.