Dirt Wheels HomeDirt Wheels Latest NewsDirt Wheels, Subscribe & Save Only $19.99 for 12 issues.MachinesDirt Wheels ATV, UTV Tests & Product ReviewsDirt Wheels Featured StoriesDirt Wheels Technical & How-TosDirt Wheels Where to RideDirt Wheels Racing News & FeaturesDirt Wheels Photos & Videos GalleryDirt Wheels Have a question? Ask the Editors
Bookmark and share

TWIN-PIPER RAPTOR BLUES

 
(1/25/2008)
Dear Bossman,
I have an ’07 Raptor 700 and just installed a DMC afterburner comp twin exhaust, a DMC control module, and a velocity air filter kit with the airbox lid removed. The problem is it keeps fouling sparkplugs now. I was wondering what’s causing this and how to fix it. Your help would be greatly appreciated and not forgotten.
David Eyer
Dallas, TX.

The cause, my boy, is a too rich mixture, caused by one or all of the components. You need to lean up the mixture at some point in the rev range. Do you have a stumble that gets worse as the motor gets hot? That is a sure symptom of a too rich mixture. I can’t tell you where or how because you didn’t tell Boss where in the throttle range you are rich. Ignore engine revs. It is throttle position you need to be paying attention to. Determine at what throttle position you are rich and then lean that range and you should stop fouling sparkplugs.

Topic: Ask the Editors

News:
  • How does the Honda Odyssey compare to Polaris' new ACE UTV?
  • RACING RAPTOR
  • I NEED WIMMERS PARTS!
  • HOW TO MODIFY SEPARATE BRAKES ON A CAN-AM OUTLANDER
  • WHAT HANDELBARS DID YOU USE ON THE DIRT WHEELS PROJECT GRIZZLY?







: ON SALE NOW
- Subscribe
- Customer Service
- Advertise
- Contact
- Back Issues

: WHERE TO RIDE



 
WARNING: Much of the action de­pict­­ed in this magazine is potentially dan­gerous. Virtually all of the riders seen in our photos are experienced ex­­perts or professionals. Do not at­tempt to duplicate any stunts that are be­­yond your own capabilities. Always wear the appropriate safety gear.
Copyright 2008 Hi-Torque Publications, Inc. All rights reserved.
Console Login