only starsts with starting fluid

[1990gsx600]

i have a 90 katana. and when its complete cold and hasnt run for a day it will need starting fluid. after its warm and i shut off the bike, itll start right up. any suggestions of what to tweak.

[GregS]

Things to check would be the enrichening circuit, choke circuit. The float level, see if it starts cold if you put it on "prime" for a couple minutes before trying to start.
How does it run? Any flat spots, hesitations, dying, etc....?

[steves]

If it's a 1990, and hasn't ever had the carbs cleaned... it's probably time.

[arsenic]

no, don't Prime it for a couple minutes, like 30 seconds tops

[1990gsx600]

its had the carbs cleaned about a year ago, ill try the prime suggestion. runs good

[steves]

Try running some seafoam or techron through the bike... but the problems you are describing point to crud in the pilot circuit.

[arsenic]

yeah, very true. If the pilot circuit is in fact blocked then seafoam will not get through the carbs and not do a whole lot for you.

[1990gsx600]

im more of a car guy so wheres this pilot circuit located on the bike and how do i repair it

[arsenic]

you need to throughly clean every passage in your carbs

[arsenic]

If you send your carbs to me, I'll clean them for 4 hours labor at $30 an hour

[md86]

Yeah , betting on a lean idle circuit , most likely caused by crud build-up . If it starts and idles well when warm , that'd point to gas getting through enough when warm to keep it running , so Seafoam COULD help , provided it's something that it can break down . If it works , hooray . If not , time to make SURE them, carbs is clean ....

[steves]

Try searching for CARBS 101.

[stevens4life2]

damn carbs... i wish there were easy! At one point, i couldnt even get my bike to start with starter fluid

[kain101]

ok, i am having, the same problem now... so let me know exactly what works for you. I am gonna completely disassemble the carbs 2morrow (if i have time).