Hi Guys,
I have a problem similar with a recent post I saw.
Basically when I start my bike cold, the engine is misfiring. However as soon as I rev above 4000 RPM the 4th cylinder cuts in and then runs fine onwards from there
Any ideas?
Misfire
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banner001
- Track day God
- Posts: 2589
- Joined: Sat Sep 24, 2011 3:27 pm
- My Bike: ZXR400 L4
- Location: Nuneaton
Re: Misfire
4k is the transition onto the needle jet...i would guess at a blocked pilot jet on #4 carb.
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said
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RedexRobB
- Site Admin
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- Joined: Fri Aug 30, 2002 7:37 pm
- My Bike: ZXR400L3
- Location: Ipswich, Suffolk
Re: Misfire
Take a look at the plug. Could be a blocked jet or just the plug needs a clean and gap resetting. May even need to replace it.
Also give the ht lead the once over.
Also give the ht lead the once over.
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JamieNeve
- Posts: 197
- Joined: Fri Jan 25, 2013 12:33 pm
- My Bike: CBR600RR, ZXR400 L-2
- Location: Waterlooville, Hampshire
Re: Misfire
Cheers for the help guys, I haven't cleaned the carbs since getting it yet, so i'll be sure to do that!
Also the plugs are due for a change so i'll swap and torque those up!
Also the plugs are due for a change so i'll swap and torque those up!