First of all, my carb is a Dellorto Sha 14.12 running a 56 main jet..
After swapping my almost completely restricted original fuel valve and old fuel line with a similarly sized new 3/16 inch fuel line and sickbikeparts petcock, the bike does not want to run. I installed a brand new spark plug NGK BP6HS for the maiden voyage on clean, open fuel line with more fuel flow so I could do a plug chop and check how the new setup was burning. The plug has about 1/2 mile on it and looks pretty good. It has a light tan color and is slightly damp with fuel. Reading the plug color, I can't make any diagnosis that anything is wrong except it is slightly wet. The plug is just showing what it looks like on choke because it wouldn't run off choke. Gas/oil was mixed right and bought fresh that day.
The spark ignites and runs good on choke but as soon as it goes off choke it runs like a speed demon for about 80 feet and then refuses to ignite the incoming fuel/air charge and bogs out completely.
The bike ran quite well with the more restricted old fuel setup with the exception of bogging out at WOT. Now I feel stupid that I changed things around and got rid of the old fuel valve and line which worked (more or less). The idea gathered from the forum was that my bowl could be running dry at top speed. This is why I upgraded my fuel delivery system. I do have a brand new pod air filter. I know I have heard before that with an increase in fuel flow comes a decrease in jet size or an increase in air flow to compensate? I don't know what else to do besides downsize my jet to hopefully fix this problem. This is where you come in. Any suggestions on changing my jets (to what size) or any other advice that might help get me back on the road?
After swapping my almost completely restricted original fuel valve and old fuel line with a similarly sized new 3/16 inch fuel line and sickbikeparts petcock, the bike does not want to run. I installed a brand new spark plug NGK BP6HS for the maiden voyage on clean, open fuel line with more fuel flow so I could do a plug chop and check how the new setup was burning. The plug has about 1/2 mile on it and looks pretty good. It has a light tan color and is slightly damp with fuel. Reading the plug color, I can't make any diagnosis that anything is wrong except it is slightly wet. The plug is just showing what it looks like on choke because it wouldn't run off choke. Gas/oil was mixed right and bought fresh that day.
The spark ignites and runs good on choke but as soon as it goes off choke it runs like a speed demon for about 80 feet and then refuses to ignite the incoming fuel/air charge and bogs out completely.
The bike ran quite well with the more restricted old fuel setup with the exception of bogging out at WOT. Now I feel stupid that I changed things around and got rid of the old fuel valve and line which worked (more or less). The idea gathered from the forum was that my bowl could be running dry at top speed. This is why I upgraded my fuel delivery system. I do have a brand new pod air filter. I know I have heard before that with an increase in fuel flow comes a decrease in jet size or an increase in air flow to compensate? I don't know what else to do besides downsize my jet to hopefully fix this problem. This is where you come in. Any suggestions on changing my jets (to what size) or any other advice that might help get me back on the road?
