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lowrider3035
09-30-2004, 03:24 AM
i just changed the low speed jet from a 45 to a 48 and left the main jet in wich is a 175 the bike runs a lot better not cold nature like it was be fore but i still get back fire through the carb once or twice every time i ride i have played witht the air mixture ran it in til it stumbled and then ran it out and then rann it back in to where it is in the middle which bout 2 turns out is this ok or should i change the ignition to a screaming eagle will this help the carb is brand new i forgot to mention that.. thanks for any advice.. :blink2:

junior
09-30-2004, 03:59 AM
welcome lowrider....

couple things first....

1. i'll assume you have a dyna. any mods? cams? bore? etc...
2. is the accelerator pump working properly? adjusted properly?
3. you say the carb is new. why did you replace the old one, and what size is this one?

let us know....

j

lowrider3035
09-30-2004, 06:29 PM
i ts a 93 dyna lowrider new rings and andrews cam ev3 the old carb was wore out the carb i put on cane off a 88 inch motor so i guess it s a little bigger. but the bike dose run and sound a lot better than before.. i do have a big sucker air kit on to..

lowrider3035
09-30-2004, 06:30 PM
for got to ask how do you adjust the acclerator pump i did look at it and it is good

junior
09-30-2004, 08:06 PM
as i recall, there is a tab that pushes on the pump rod that can be bent. however, if you see a full duscharge- it should be fine.

have you tried a timing adjustment yet?

j

lowrider3035
09-30-2004, 09:26 PM
no i have not im a little wery of messing with the timing un less you can tell me how to check it

junior
09-30-2004, 09:34 PM
try this:

http://www.nightrider.com/biketech/ignition_timing_00.htm

j

DemonSpeeding
09-30-2004, 11:43 PM
I bought a quik jet kit from Harley for my 97 Low Rider.It has a 45&48 slow jet, a 180&185 main jet, and a jet needle.The instructions said to use a 45&180 with modified air cleaner and exhaust.With a modified air cleaner,exhaust and a high performance cam go with a 48&185.use the new jetneedle in all cases.Iwent with the 45&180.I still had a little backfire when letting off the throttle at low rpm,so I went up to a 48 slow.A Harley service guy said screw the air /fuel all the way in and then back off 1 3/4 to 2 turns.

lowrider3035
10-02-2004, 05:35 AM
thanks for the info.. let me no how yours runs..