I just put a snorkel on my 2004 450es and it runs good but runs like crap idling. It also kind of sputters when the rpms are low. But when I open it up it runs great. I have factory exhaust. Is this a jetting problem or what. PLEASE HELP!
You need to get a bigger jet. I would get a factory jet. On my 450, a stock
135 jet & puttin' the clip on the last notch down on the needle worked great.
I don't know what your elevation is, but that worked great for us. Hope this
helps.
Is it a homemade snorkle or the triangle atv snorkit kit? IF you are having low rpm issues it is most likely a needle clip setting and an air / fuel issue. You should not need to jet with a factory exhaust. Do you have the stock filter too? I suggest you put the needle clip on the last notch (closest to the point) with a washer under the clip, then turn the fuel mix screw all the way in until just snug, then back out 2.5 turns and see how it runs then. If its better but not perfect keep turning the mix screw out an 1/8 turn at a time until you reach a total of 3 full turns out on the mix screw. If you get to 3 turns out and it is still running like crap, then you will need to go get an OEM jet one size bigger than what is in there now. It takes lots of patientce and trial and error with jetting. However if you follow the steps I provided you, you should be pretty close to spot on, without the need to change the jet.
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
Honda Foreman Forums
Honda Foreman Forums: Discuss the latest Honda Foreman in our free Honda Foreman forums. Also talk about Honda's other ATV and UTV's including the Honda Rubicon, Honda Rincon, Honda Rancher and Honda Recon