Got it runnin! now what?

[machine]

Hells yeah! got it runnin' - except it dies when you give it gas and only stays running with the choke on (turns out, the 2-3 coil was bad even though it ohmed out OK). The #3 exhaust pipe isnt getting hot either. As soon as you give it gas, it dies. It sounds like it takes in a big gulp of air then dies. Where is a good place to start at? BTW, i just rebuilt the carbs, so my adjustments are prolly all off. I have the 'top side' metering needles at 1 turn out, and the bottom ones are at 1 1/8. Anyone know where to get a petcock diaphragm and fuel filter at?

[SqDancerLynn1]

Please post what bike you have! I would just order a new petcock.. Z1enterprises.com has a replacement.
I would turn the bottom mixture screw in to 0ne turn -7/8 out and the air screw to 2 1/2 to start. You did reinstall the air box correct??

[ozman]

Hells yeah! got it runnin' - except it dies when you give it gas and only stays running with the choke on (turns out, the 2-3 coil was bad even though it ohmed out OK). The #3 exhaust pipe isnt getting hot either. As soon as you give it gas, it dies. It sounds like it takes in a big gulp of air then dies. Where is a good place to start at? BTW, i just rebuilt the carbs, so my adjustments are prolly all off. I have the 'top side' metering needles at 1 turn out, and the bottom ones are at 1 1/8. Anyone know where to get a petcock diaphragm and fuel filter at?

well the 3rd pipe not getting hot tells you it is not firing you need to see why, does that cylinder have compression, spark or fuel eg compression check, after running on choke awhile is the plug wet with fuel from not firing or dry
you need to eliminate some of these variables to find the problem
Oz

[BassCliff]

Hi,

Are the valves adjusted? Is the air intake system free of air leaks? i.e. new intake O-rings, intake boots, etc? Is the airbox sealed and properly installed with an adequate, properly oiled air filter?

Oh yeah, what kind of bike are we talking about? Just put it in your signature file. Use the 'User CP' (User Control Panel) by clicking on the link in the upper left area of your forum page.

Thank you for your indulgence,

BassCliff

[machine]

Sorry, its a 79 gs550L. I installed 4 cone sytle air filters on it, so i figure i would need to richen it up a little bit. It has 6000 miles on it, i would imagine the valves wouldnt be all that far out of adjustment if at all. I will check the #3 plug after i get the petcock back on for spark and compression. I looked for a new petcock and couldnt find them for a 79, i only found 80 and up - which didnt look like it would fit. The diaphragm just dry rotted and leaks to the vaccuum side. It cleaned up pretty good, just couldnt save the diaphragm and the filter. The boots dont leak as far as i know, i sprayed starting fluid on them all while it was running and the rpms didnt change at all. So, turn the bottom mixture screws 1-7/8 turn out and start the topside screws at 2-1/2?

[Jagir]

do the valve adjustment.

[machine]

I will add it to the list.