running way rich

[rgierer]

I picked up an 85 GS700e on this forum a few months ago. The PM was leaving for the army and needed to just move it on, he indicatated he had just cleaned the carbs but not adjusted them. Being patriotic I bought the bike stuck an ebay r/r on it and a new main fuse and took it out a few times.

This bike is running way rich and has virtually no throttle after 1/2 or so. It starts good and idles good and when I turn the air/fuel screws I have little impact. I have done a bit of reading and I can back off these air screws but I doubt that will impact the higher RPM performance.

I can synch upthe carbs but I hesitate to believe it would have that dramatic of impact, but I have been wrong more than nice before.

Please provide insights and guidance at will.

[wayne cooper]

Carbs

Cleaned or cleaned properly? There are more ways to foul up the job than can be counted. Best to take them off and start from the begining. This way you will know if they were put together properly or just put together to sell. Have faith, you have an overwelming amount of help at your fingertips.I have seen some excellent info on the whole process on this site. Best I can offer at this time of morning.

[Billy Ricks]

Float levels are most likely set too high. The idle screws only have effect at openings less than 1/4 throttle. After that you are on the needle and at higher openings the main. Float levels have a huge impact on mixture. Bench sync the carbs while they are off too. You can get them close enough without guages that it should run decent.

[Billy Ricks]

BTW, turning the idle screws out richens the mixture down low.

[flyingace]

Running rich in all cylinders or just some? It makes a difference in how you proceed.

Do plug reads to see if all or some are running rich.

[rgierer]

I will check all 4 plugs this week end. I looked at the 2 outside plugs last week end and they were both black and wet

[KEITH KRAUSE]

I assume the air filter is clean and the air box sealed well? Stock bike?
Stock plugs? Black and wet plugs? Wet meaning fuel fouled? Plugs will air dry well? If not, wet would be oil fouled. Mixture screws around 1 1/2 to 2 turns out, since they were mentioned. If problems are mostly at 1/2 throttle position and beyond, if carb related, you're looking at dirty carbs/poor float adjustment/jet needles and/or main jets too rich.
Hope compression is good.

[rgierer]

You have given me plenty of steps. The bike has pods and allegedly non OEM carbs. The mods are not new and this bike had been owned by the young man and his uncle for several years.

I will run down the steps and assess

Thanks

[KEITH KRAUSE]

"Non OEM" carbs opens a whole new can of worms.
Most common mod' I've seen over the years is to take a larger set of carbs and simply bolt them on thinking more fuel=more power. But generally, the bike may run ok up to 1/3 to 1/2 throttle and then just fall on its face.
You may have lots of jettng to do. Would be helpful if you can ID these carbs or send a pic' later.

[Stinkwheel]

agree with what Keith has said above here.

Best bet, try and source some original fitment carbies.

[rgierer]

How can I identify carb model.

I have pulled them off but I find few distinctive markings.

It is set up for recieving fuel from 2 hoses (a T from petcock)

The butterflys all have a marking of 135 on them.

I will run down to the Suzuki shop but I doubt if they can help me.

[Billy Ricks]

They generally have id numbers on the sides just under the caps that cover the slide diaphrams. If anybody replaced them for performance reasons they probably went with GSXR carbs from an air/oil cooled model. Since they have butterflies they are CV type carbs. If they are stock they will have the id #31300 on them somewhere.

[rgierer]

Back from the Suzuki shop.

The carbs the bike should have on it are BS32SS

While we could not confirm a number (no BS32SS or 31300) we cold find we could confirm that they had a bore of 32mm

The staff at the shop believed they were the correct carbs for the bike.

[rgierer]

FYI book calls for 117.5 main jets. This bike has 122.5

Float height does appear to be off but I am off to buy a better tool to measure with

[rgierer]

I have adjusted the floats put the bikle mostly back together but will need to run off to my brothers 50th birthday party.

Thanks to MLK I will have oporpurtunity for a test drive manana