1980 GS850 Carb issue

[Guest]

I got the bike in December it was never running 100%, after clening the carbs i discovered the previous owned had put a DynoJet kit stage 3, going from 115 main jets to 165, huge jump, I've been trying to do a trial and error since the bike is running extremely rich and my spark plus get fouled really fast.

I tried going down to 150 main jets, and 140, still running like crap.

I want to go back to 2 over on the main jets, i want to know if Suzuki goes up 2.5 or 5 increments?
stock is 115, should I go to 120, or 125?

[JJ]

Your choice of color for your font is very hard to read.

Has the intake and/or exhaust system been modified?

[tom203]

Are you running pods instead of stock airbox? If so, What brand?

[fer_gloko]

yes it has pod filters and 4 into 1 exhaust

[JJ]

Also, be aware that DJ jets and Mikuni jets aren't numbered the same. A 165 DJ jet is not necessarily a "huge" incremental change.

[fer_gloko]

the pods are K&G

[fer_gloko]

Yes DynoJet 165 equals 155 Mikuni I made sure I checked that, thanks

http://www.jetsrus.com/FAQs/FAQ_mikuni_vs_dynojet_vs_keihin_sizes.htm

[gustovh]

Two steps up on the mains aught to do it for ya. You might have to adjust the needle clips down a notch or two. Adjust for lean best idle on the pilots. Should get you close.

V

[Steve]

You will need to go up more than two sizes. I am up four sizes (125) on my 850. I have a very quiet (read that as 'restrictive') four-into-one pipe and a K&N insert in a stock sirbox.

.

[fer_gloko]

I found out today that i did NOT have carb rubber plugs that might be an issue when going any higher than 4000 RPM

Here: http://www.ebay.com/itm/suzuki-gs110...-/351462124604

also have a vacuum leak on one of my intake manifold boots

Here:http://www.z1enterprises.com/ItemDet...=13110-49000x4

im gonna try and get the plugs and get hardware store hose clamp since the original clamps are stretched out and are maxed out when i tighten them

[bwringer]

im gonna try and get the plugs and get hardware store hose clamp since the original clamps are stretched out and are maxed out when i tighten them

The clamps are not stretched out -- the problem is that the intake boots have hardened and shrunk.

Also, there are no hardware store clamps narrow enough to fit correctly.

You can't repair or halfass intake boots; you have to replace them and their o-rings.