Jump to content
Sign in to follow this  

Engine sputtering

Recommended Posts

I noticed this past weekend that when I am in a higher gear (4th and 5th) but I am not going that fast and I hammer the throttle, she sputters like crazy. It has never done this before and was wondering what the problem could be? Clogged jet or something? Thanks in advance.

Share this post


Link to post
Share on other sites

yeah.. i've got the same problem last friday too. its fine at low rpms but when im at full throtle in higher gears it starts to splutter like there's no fuel..

thinking mayb it's the crabs that needs servicing. feels like it's misfiring or foul plugs but i dont think so coz i've just replaced them. will tell you how it goes once i service the carbs this friday

Share this post


Link to post
Share on other sites

Yeah the jetting on the XR4's was always a bit of a problem. Here's what U run in mine (stock motor) and suggest you try it-

*158 main jet

*55 pilot jet (stock for 2000)

*needle 3rd clip position

*airscrew 2 1/4 turns out

*float level 15.5mm (14.5mm stock)

*push a 15mm length of snug fitting tube over the pilot jet. This extends the pickup of the pilot jet 5mm and helps the bike not to "bog" as badly.

Good luck with it

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Reply with:

Sign in to follow this  

×