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Author Topic: DRZ400 Misfire  (Read 483 times)

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Offline Gawel

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DRZ400 Misfire
« on: November 20, 2010, 06:53:59 am »
Howzit okes  :ricky:

My DRZ has developed a misfire at high revs. I have done about 8000km so i presumed the plug was shot. New plug in , same same. I checked all the connections on the coil and cleaned it with Q20. The misfire is the same regardless of the throttle position.
Any ideas ?
 

Offline Poffmuis

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Re: DRZ400 Misfire
« Reply #1 on: November 20, 2010, 08:21:42 am »
take the plug out and earth it n the bike, not on the engine casing, might leave marks. if the spark looks weak you might need a source coil rewind. some bikes gave problems like this...
 

Offline Gawel

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Re: DRZ400 Misfire
« Reply #2 on: November 20, 2010, 08:29:05 am »
Thanx Bud

What is a source coil and where do i find it ?
 

Offline lecap

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Re: DRZ400 Misfire
« Reply #3 on: November 21, 2010, 11:10:21 am »
It's the thingie that makes the sparks.
It lives amongst the alternator coils inside the engine under the left engine cover.

It's RRRRR idf you ask your friendly authorised Suzuki mechanic to fix it as he will sell you & fit a complete stator coil kit.
Cheaper if you get it fixed. Better quality too.

As I know you're going to ask: Krog's in Waterkant Street / Cape Town

BTW: It could possibly also be a bad HT coil. Borrow a known good one and check before you ship off your alternator for rewinding.
« Last Edit: November 21, 2010, 11:12:03 am by lecap »
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Offline Poffmuis

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Re: DRZ400 Misfire
« Reply #4 on: November 21, 2010, 02:13:47 pm »
if you know someone with a drz you may also want to swop CDI and test that
 

Offline Sprocketbek

Re: DRZ400 Misfire
« Reply #5 on: November 21, 2010, 02:36:08 pm »
Agree with the above.

Get the diagram and specs off the internet. Measure the resistance of the exciter coil. If it's not in spec take it to Krog's.

Or take it there in the first place.
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Re: DRZ400 Misfire
« Reply #6 on: November 21, 2010, 03:14:05 pm »
I'm willing to bet this is your problem http://www.wilddog.za.net/forum/index.php?topic=23176.0
Remove the left hand cover and check your coils. I have a link on that page where I fixed mine. Hope it helps.
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Offline Cable Tie

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Re: DRZ400 Misfire
« Reply #7 on: November 21, 2010, 09:37:36 pm »
Hi, sorry for the hi-jack! Is there a thread for the DRZ 400 in the bikes & workshop section?
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Offline letsgofishing

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Re: DRZ400 Misfire
« Reply #8 on: November 22, 2010, 08:22:42 am »
Hi, sorry for the hi-jack! Is there a thread for the DRZ 400 in the bikes & workshop section?

yip
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Offline Gawel

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Re: DRZ400 Misfire
« Reply #9 on: February 04, 2011, 11:20:45 am »
Thanx Chaps.
After all that , my stator is fine. My battery was the culprit !
I dont know how mr suzuki can be so doff !

 :laughing4: :laughing4: :laughing4:
 

Offline MildDog

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Re: DRZ400 Misfire
« Reply #10 on: February 04, 2011, 10:09:13 pm »
Thanx Chaps.
After all that , my stator is fine. My battery was the culprit !
I dont know how mr suzuki can be so doff !

 :laughing4: :laughing4: :laughing4:


How would a battery create a problem at high revs? That is bizarre. I am happy you fixed it!! Maybe someone can explain how that is the problem, my bike-electrics knowledge is zero.
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