I just rejetted, its backfiring a little when I let off throttle

[damian600]

05 450r, 185main, stock pilot, stock needle on 4th clip. Seems to be running good, but the backfiring. Can I turn the fuel screw more than 2 time out? Will that help?

[thump4863]

Turn your fuel screw to about 2 1/2 turns. If its still backfiring go up 1 size on your pilot. You want to stay around 1 1/2 - 2 1/2 on your fuel screw. Not much more than that.

[damian600]

Yea I have a few pilot jets, I didn't think I would be able to change the pilot, seems like a pain in the ***, this is my first time doing this. Can I ride it like this for one day? I'm supposed to go ride tomorrow for a few hours.

[Hammer trx450r]

Why is your needle on the 4th clip?

[damian600]

Originally posted by damian600
Yea I have a few pilot jets, I didn't think I would be able to change the pilot, seems like a pain in the ***, this is my first time doing this. Can I ride it like this for one day? I'm supposed to go ride tomorrow for a few hours. it was on 3 moved it to 4 that's what I read people were doing. Its the stock needle

[thump4863]

Yes you can ride it like that if its just popping on decel. It wont hurt anything.

[damian600]

How do I fix this

[d3ktrix]

Originally posted by damian600
How do I fix this


Bigger pilot jet.

Start with like a 50.
Adjusting the stock pilot out probably won't be enough to stop the popping.

When u put the new one in set it right to 2.5 turns out and start from there.

If it still pops go to a 52, if u have crappy off idle throttle response compared to before you switched it then turn it in a 1/4 turn at a time until its good.

[damian600]

thanks guys, to change the pilot, do I need to take the carb. totally off? This is my first time doing this, the main jet and needle were a piece of cake. Any tips for doing the pilot jet?

[d3ktrix]

The last time I changed my pilot I just loosened the front and rear and air boots on the carb and tilted it so the float bowel was facing me better.

Its kind of a pain to tilt the carb, you have to like push down on it as you tilt it because the top hits something (forget what).

Then I took the float bowel off and took the pilot out with a really small short screw driver.

[thump4863]

I wouldnt go more than one size up from stock on the pilot

[lumi]

where do u live i might be able to help?

i can do it for u

-lumi

[damian600]

Exit 63 off the LIE, suffolk county

[Hammer trx450r]

Just try turning the air screw out 1/4 turn untill it stops doing it. Then turn the screw in counting the turns and tell us how many turns it was.

[damian600]

I'm going riding now , I will do that later today
Its out 2 1/4 turns now

[d3ktrix]

Originally posted by damian600
I'm going riding now , I will do that later today
Its out 2 1/4 turns now

Shouldn't go more then 2 1/2 to 3 turns out with the pilot screw. Anymore and it will fall out.

If you have to go more then 2 1/2 turns out, go with the next size up.

[damian600]

Originally posted by d3ktrix
Shouldn't go more then 2 1/2 to 3 turns out with the pilot screw. Anymore and it will fall out.

If you have to go more then 2 1/2 turns out, go with the next size up. next size pilot? It was backfiring less today at 2 1/4. I think 2 1/2. Would fix it. Can I really get at the pilot by just turning the carb like I did when changing the main jet.
This thing feels faster, and sounds much better with this Dasa pipe, can't wait to get my cam installed!

[lumi]

damn u aint that far off... i go to montauk and river head alot...

i know u might get this fixed but if u need help with the cam and stuff and if u can wait for the end of the month... i can come down with my 335i :): and we can go for a drive.. i would tow my 06 R but 335 dont got a hitch lma0o



yea loosen the boot clamps and turn the carb as far ur way as possible... taken the bowl off aswell. sounds like next size up might fix it... most of the time u can get close but never on spot.. as with my quad i got some poppin on decel...


try to turn a bit more and see if it fixes it.

its actually called the slow jet and the pilot screw.. the poppin is afterburn


-lumi

[damian600]

Originally posted by lumi
damn u aint that far off... i go to montauk and river head alot...

i know u might get this fixed but if u need help with the cam and stuff and if u can wait for the end of the month... i can come down with my 335i :): and we can go for a drive.. i would tow my 06 R but 335 dont got a hitch lma0o



yea loosen the boot clamps and turn the carb as far ur way as possible... taken the bowl off aswell. sounds like next size up might fix it... most of the time u can get close but never on spot.. as with my quad i got some poppin on decel...


try to turn a bit more and see if it fixes it.

its actually called the slow jet and the pilot screw.. the poppin is afterburn

Thanks lumi, greatly appreciated! I don't think I could do the cam' have to have dealer do it.
My m3 is being transported from California right now. I got it from Leasetrader.com.



-lumi

[damian600]

Thanks lumi, greatly appreciated! I don't think I could do the cam' have to have dealer do it.
My 06' m3 is being transported from California right now. I got it from Leasetrader.com.

Check out my 05 m3,

[lumi]

bro save ur money trust me.. u can do it on ur own, or i can do it with my eyes closed. save it for mods. i can walk u threw it with no problem..

throw me a pm if intrested lol



-lumi

[fatkid400]

Man thats awesome lumi I wish you lived closer to me we need nicer guys like you in Oh:D