ATV Florida Forum

General => Open Discussion => Topic started by: CEC on March 18, 2008, 07:03:38 PM



Title: Predator 90 Spark Problem
Post by: CEC on March 18, 2008, 07:03:38 PM
My Son Has A 06 Pred 90, Can't Get Any Spark At The Plug, I Have Already Changed The Coil, And By passed The Wrist Safety Switch To Rule Those Out. Thanks For Any Help.


Title: Re: Predator 90 Spark Problem
Post by: Mars on March 18, 2008, 09:51:31 PM
Is the battery good? Are you kicking or cranking with the starter? Need to know.


Title: Re: Predator 90 Spark Problem
Post by: Able on March 18, 2008, 09:58:21 PM
Try testing the stator for the proper resistence output to see if it's good. I'm no mechanic, but was directed to do a similar test by a guy that know a lot obout this stuff.
If the battery is good and supplying proper voltage it's being lost somewhere. since you've done the coil - check the stator, check for any loose grounds / connections etc.
also  - I know the Pred 500 has an emergency throttle kill if it gets stuck open - does the 90 have this ? if so check to make sure the throttle cable is properly adjusted and test the emergency kill switch - open the cover with the bike at idle - then rev a few hundred rpm's over and hold the cable and let go of the thumb lever - this will close the always open kill switch.


Title: Re: Predator 90 Spark Problem
Post by: CEC on March 18, 2008, 10:02:01 PM
Battery Is Good, Motor Has No Problems Turning Over. Just No Spark


Title: Re: Predator 90 Spark Problem
Post by: Mars on March 18, 2008, 10:22:35 PM
Okay that should rule out the starter relay. Yes, the is a goofy correlation with the starter button, relay and ignition. (eg. weak battery + kick start= no spark. weak battery+kick start while holding start botton=spark) It's a Taiwanese thing.

I would have to agree with Able. But I do not have any manuals to tell which wires to test for ignition pulse to the CDI. :(

I would check the wire harness on the safety switch again. Any bare wire would ground out the coil.