Carb question - Snowmobile Forum: Your #1 Snowmobile Forum

ghuds · 10-29-2009, 04:22 PM

I recently bought a 98 Venture (VT500B) with about 4000 miles - never been touched. It smoked quite a bit and didn't run right. I tore down the top end, mic'd the cyllinders (within specs), honed the bores, and replaced pistons and rings. I just broke in the top end - smoking basically stopped. The only problem is that it only runs with the choke on. I tore down the carbs, cleaned them, and checked the jetting. Everything is good.... what am I missing?

**RJ Gleason** · 10-29-2009, 05:03 PM

Plugged pilot jet.

ghuds · 10-29-2009, 06:24 PM

Thanks, I'll check it out. I thought I had the carbs all clean.

**RJ Gleason** · 10-29-2009, 06:45 PM

Run a fine wire through the passages and blow them out too.

ghuds · 11-02-2009, 06:15 PM

Thanks for the advice - it worked!! Pilot air screw was also dirty.