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2000 quadmaster miss firing

recniz

By recniz
in Suzuki ATV Forum

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recniz Newbie

recniz

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Ok guys and gals it's finally time to ask for some help with a mid to high rpm miss fire I'm having on my 2000 quadmaster which causes it to backfire bad and wont allow it to rev past 3000 as per what my timing light is telling me. For the past 2 weeks I've been trouble shooting this issue and for the life of me I cant figure out whats wrong. Here's a little background to what I've done so far.

1. Cleaned and rebuilt carb all jets and settings are in spec.

2. Checked compression and valve lash a

3. battery voltage stays steady at around 13.8v

4. Ohms and peak voltage tested everything as per the oem service manual and no problems found

5. Removed stator cover and found no physical damage to stator or pick up coil or magnets

6. Bought a new ignition coil and spark plug plus used cdi

7. Checked all wiring for damage and cleaned grounds

8. Disconnected rectifier and stator to eliminate that as possible cause

9. jumped power and ground direct to cdi

I know Is an ignition miss because I purchased a inline spark tester so I could physically watch the ignition system in action. It starts and idles smooth with a consistent flash from the spark tester but as soon as i try to rev it up I can see the spark tester skip and my quad just backfires and wont rev past around 3000.

Ok any ideas?

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