Need help w/backfiring '98 EFI powder special

Dirtyface · Nov 27, 2007

This sled has always run great, now I have a backfiring/boggging problem. I have checked the usual suspects, throttle safety switch, fresh gas, plugs, etc. It will run fine for awhile then start bogging and backfiring, it doesn't seem fuel related, it acts like a bad safety switch but I've bypassed it and there is no difference. The sled is stock except for a chip and pipe. Ideas anyone...?

SaberKitty · Nov 27, 2007

Stator?

Dirtyface · Nov 27, 2007

How do you test the stator??

SaberKitty · Nov 27, 2007

http://www.arcticchat.com/forums/index.php?showtopic=57617

arcticcatwill · Nov 27, 2007

whan was the last time you cleaned power valves, how many miles, maybe it needs rings? but still check the stator.

cowkiller · Nov 27, 2007

I had exactly the same issue with an old 99 500 powder special. It was the neutral saftey switch. If you are sure you bypassed it then my next thing would be put the stock chip back in. if not that your little black box has probably died. Bummer!

Rixster · Nov 28, 2007

you have moistier in your computer box. Mine did the same thing till i got the water out of the computer.

AKM7 · Nov 28, 2007

Stator, I had a 98' 600 PS EFI and it did the same thing. I ended up getting an aftermarket stator for about 1/2 price.

BordnBill · Nov 28, 2007

arcticcatwill said:
whan was the last time you cleaned power valves, how many miles, maybe it needs rings? but still check the stator.

No power valves on a 98.

I don't think the stator would cause back fire. I'm guessing ECU, especially if the light is not blinking.

arcticridr · Nov 28, 2007

Check where the chip plugs in, if their is any white looking residue means moisture , get some QD electric cleaner and spray it down just for s&g may be your problem!!! Also check your connections and spray them even if they look good, if that year has a TPS check connections their as well !!! Use only QD as brake clean will eat the plastic!!!

mtn junkie · Oct 24, 2009

so if the red light blinks the ecu is good. Im trying to get a buddys 98 ps 600 efi runnining it will start but run real rough and it is back fireing out the throtle bodies and exaust had the local arctic cat dealer set the tps and now I dont know what the problem is ecu stater or maybe injecters any help would be appreciated

76FOMOCO · Oct 24, 2009

check the timing key had the same thing and the key had broke and the timing was off.

mtn junkie · Oct 24, 2009

thanks didnt think of timeing key

mtn junkie · Oct 24, 2009

76FOMOCO said:
check the timing key had the same thing and the key had broke and the timing was off.

right on the money 76fomco timeing key sheered off thanks

Blaine · Oct 25, 2009

This is how you check the stator. You also want to check reeds when you have some backfiring. I'm glad you found out it was a sheered key.

Stator testing out of a sled
http://www.youtube.com/watch?v=rCqojU5wHos

Stator testing in a sled:
http://www.youtube.com/watch?v=Uzz2NZiw3fk

Stator removal:
http://www.youtube.com/watch?v=eGSsyRRiIDI

Stator reinstall:
http://www.youtube.com/watch?v=qGiXzdF_IaU

Search

Need help w/backfiring '98 EFI powder special

Dirtyface

Free Member

SaberKitty

Well-known member

Dirtyface

Free Member

SaberKitty

Well-known member

arcticcatwill

Active member

cowkiller

Active member

Rixster

Well-known member

AKM7

Free Member

BordnBill

Free Member

arcticridr

Well-known member

mtn junkie

Free Member

76FOMOCO

Well-known member

mtn junkie

Free Member

mtn junkie

Free Member

Blaine

Free Member

Similar threads