1982 gs 750 problem

[Guest]

i got the bike got it running but it wont rev over 2000 rpms and will bog and die any info on the problem

[tom203]

More info needed- stock airbox? stock exhaust? what maintenance has been done or is this a new-to-you bike? Have you discovered Basscliff's info warehouse?

http://members.dslextreme.com/users/bikecliff

[django89]

stock 2 into 1 exhaust had no air box on it stock jets and new to me

[tom203]

stock 2 into 1 exhaust had no air box on it stock jets and new to me

No airbox, as in no air filter setup at all??

Edit; probably best to stop here and move this problem to carb section forum as this ain't electrical problem

[django89]

yea i had taken it off so i could get to the main jets to make sure they were clear

[850 Combat]

Stock jets won't work with no airbox and a non stock exhaust.

[django89]

it has a stock exhaust i planned on running pod filters and rejetting but just wanted to see if the bike ran first before i did any work plans are a cafe racer

[tom203]

yea i had taken it off so i could get to the main jets to make sure they were clear

Well, there is alot more to worry about then clear main jets. At 2k and light load, the bike is still running on its idle circuits. Best to assume your carbs need attention ( full cleaning) unless the PO was your best friend and convinced you that it ran perfectly.

[tom203]

it has a stock exhaust i planned on running pod filters and rejetting but just wanted to see if the bike ran first before i did any work plans are a cafe racer

Fair enough, but best to get it running right with stock airbox and then let the pod fun begin!

[django89]

what are you thinking i remember the rubber plugs in the bowls were pretty bad when i pulled one and let it sit for a little while it shrank and was to small to stay in

[django89]

and i see alot of valve adjusment would that cause this

[tom203]

what are you thinking i remember the rubber plugs in the bowls were pretty bad when i pulled one and let it sit for a little while it shrank and was to small to stay in

At this time of day I seldom know what I am thinking, but I do know that those rubber plugs cover the pilot (aka slow) jets- the pilots are intentionly designed to be fed by a slot in main jet cavity. Yeah, they shrink when dried out but usually swell when gas hits them. And anyways the fuel bowl bottom holds them in place .
The stock CV carb setup was "tuned " to run with a slightly restrictive intake- they don't seem to enjoy running without their stock airbox unless you alter carb jetting.