Carb help

[Blowout]

Thanks. Wasn't sure if needle manufacturer mattered or not. It is in 3rd groove from flat end. The previous po had oem filter on it with 185 main and 135 pilot. I will move the clip down this evening.

[davej]

It will run great for you when you move it. In fact it will run better than it ever did with the old jetting. The old jetting was way off even with the oem filter. My guess is that if you look at the old jet is is not a Mikuni jet and the kit that was used was a dynojet kit A Mikuni jet will have a symbol on it that looks like a square inside a square. Dyno brand jets are numbered different than Mikuni. If it was a 185 dynojet main it would be a size between a 172.5 and a 175 Mikuni. That would be very rich for a 1600. If it was a 185 Mikuni main jet it would have been blowwing black smoke out of the exhaust every time you took off from a light or goosed the throttle

[SKWEARpeg]

I've got a 2000 RSS with a stock carb. I have Freedom Performance 4" duals, a ported intake, a Barons BAK and no AIS. It runs great and gets 40-42 mpg at 75-80 mph. I'm running a stock pilot, 167.5 main with the needle on the fourth clip and a washer underneath. My RS pulls smoothly from idle all the way through to 4500rpm. I have great throttle response without having to grab big throttle to get out of a flat spot. Occasionally I get a cough through the carb when not fully warmed up, but other than that, no issues once it's up to operating temp. Going up a grade wide open in 3rd through 5th gear it pulls away slightly from a friends 2016 HD Dyna Street Bob with a 103 and a 2 into 1 exhaust!

I don't like the Dynojet kits because the numbers on the jets they send are not similar/equal to Mikuni jets so you have to go off that chart in the tech section to find the equivalent jet size. I fiddle farted around with mine for 8 years...the previous owner used the Dynojet kit, it always ran rich, it popped and backfired! I could never get it to run right until I bought the jet kit from Shane at SS Custom cycles...he specializes in Road Stars and is very helpful. His kit only comes with Mikuni jets so the numbers make more sense.

Give the Mikuni 37.5 Pilot a try. Your experience with bikes would make you a great source for input as to whether or not you think it works better. I'm running about 2 3/8 turns out from lightly seated with a both my Hack and my Springer with the Two into One, and it works good. The Hack seriously needs a two into one pipe, but before hanging the car on it, it ran much better with the 37.5. The aggravating lean cough, pretty much became nonexistent.

[hotrod460]

just ordered my 37.5, and gonna put the 170 back in, after ive dialed in the 37.5, i do have a 167.5 as well to try, she runs good when warmed up but hard to keep running when cold on idle

[SKWEARpeg]

just ordered my 37.5, and gonna put the 170 back in, after ive dialed in the 37.5, i do have a 167.5 as well to try, she runs good when warmed up but hard to keep running when cold on idle

Resist the temptation to push the enricher all the way in, until the bike is at operating temp. I usually push mine about halfway in, after the rich stumble starts 5 t0 10 seconds after you start the bike. Make sure the idle is set properly to between 850 and 950 rpms on a hot motor, as well. With the pipes you have on the Bobber, the Mikuni 170, should be ok.

[hotrod460]

thats just how i do it, apart from when i push it in half way she stumbles and will die eventually,

[hotrod460]

as soon as theres a little heat in the manifold she'll run ok, say about a minute at 6deg C

[Jim Simmons]

So I just went pumpless with my 04 RS, readjusted my float back to 4mm above the lip, and I'm getting this dying every 20 seconds thing. It just sputters out. So if I sit for a second, it starts up, I can go a bit then it dies. Is it possible the carb is fuel starved? I have ordered the Grizzly jet, it's just not in yet. My pilot is 37.5, main is 165, pipes are Cobra two into ones, Ignition is Dyna 3000. Airbox is stock. It sounds like I should have talked to Shane at S&S for a jet kit. And installed the BAK and a ported intake before going through all the trouble of rejetting etc... It was running well with a 35 pilot, 165 main and 1 turn on the PMS. the needle is a Barron's and the clip is on the fourth ring, with one washer underneath. The Cobra guys recommend a 175 main with their pipes and a 37.5 pilot. But they are assuming a BAK probably. Any ideas? I'm gonna bet it's the float valve I'm still waiting for.

[Duke]

Make sure the fuel tank is venting good.

[Spydr]

Did you vent your gas cap?