Rough Running

[Guest]

Hi all have put custom pipes on my 850 and now it's running a bit rough, coughing spluttering etc. Thinking I need to re jet for the pipes but how many sized do I go up and which jets do I change? Thanks Wayne

[smokienutz]

tell them what pipes u are using and if your carbs are stock. makes a difference where to start. example: 4 into 1 v and h w/ stock carbs or 4 into 2 into 1 w/ i am not sure po did something to my carbs.. hope that helps.

[wdavie]

Hi good point it's running original downpipes fashioned into 4-2 with slash silencers, original carbs. Thanks

[tkent02]

Up the main jets a couple sizes for starters, maybe lower the jet needle a notch. Should be somewhere near a good starting point.