EKN156
Parking Attendant
Posts: 7
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posted January 24, 2004 08:09 PM
RUNNING RICH, #3 FOULING PLUG
I'm out of ideas.... I've had this problem for the better part of 2003. My gas mileage is down to 106 mi a tank. So I sent it to RON AYERS of Greenville NC. They gave it the ole college try, but at best, they are guessing I have a leaky injector. The following service was performed:
-No failure codes stored or in history on bike's computer.
-Found all spark plugs fouled initally (replaced plugs)
-found no faults with DFI/EIC systems
-Timing and cam pulse chec to specs in service manual
-bike is california emission model
-Plug 1&2 seem dark/rich, plug 3&4 are damp
-compression test
cyl #1 240 psi #2 195 psi #3 220 psi #4 225 psi
-evidence of leaking injector on number 3 cylinder, injector only seems to lead down slightly after bike is shut off.
Is there anyone that has this problem or has anyone changed out an injector?
  
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TurboBlew
Moderator
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posted January 24, 2004 08:47 PM
Stupid question.... but how do the air filters look? Anything stuck in the intake?
Someone like RC Engineering or Marren Motorsports could spec an injector for to see if it is leaking. Its a pain to get the injectors out though.
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EKN156
Parking Attendant
Posts: 7
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posted January 24, 2004 08:59 PM
Filters are o.k., they were clean in accordance with the manual. The tech at Ron Ayers said my problem isn't that bad, but it bothers me. Does RC eng or Marren have a website or contact info.
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TurboBlew
Moderator
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posted January 25, 2004 07:13 AM
injector.com
rcengineering.com
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EKN156
Parking Attendant
Posts: 7
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posted January 25, 2004 06:22 PM
Thanks TB
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aliveagain
Needs a life
Posts: 5033
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posted January 25, 2004 07:40 PM
damn,that place is 2 towns over from me and I never heard of them before.I was wondering if all 4 ignition coils have a common ground?#2 piston looks a little suspicious.
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EKN156
Parking Attendant
Posts: 7
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posted January 26, 2004 10:31 AM
Aliveagain, I was looking at the wiring diagram for the US/Canada model A1 (page 15-67 svc manual) and it looks like the coils have a common ground labeled with a BOLD "R"
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EKN156
Parking Attendant
Posts: 7
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posted January 26, 2004 10:33 AM
AG, if you happen to use their services, could u post the results? One of the techs said they change about $35.00 each injector and it would have to be removed from the throttle body assy.
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TurboBlew
Moderator
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posted January 26, 2004 04:14 PM
Ive used them before.
Marren gives you a "before and after" comparison. Went from 65ccs on some injectors... to 82ccs.
Had a set cleaned for my buddies old FI 750 and it made a world of difference.
$35? Musta went up... used to be $25 per injector... about 1yr ago.
I suspect that DIY'ers could use a 9volt battery and a graduated beaker to see how much the injector flows.
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EKN156
Parking Attendant
Posts: 7
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posted January 27, 2004 04:29 PM
Hey Turbo B, is it hard to remove the injectors from the rail of the ZX12. I at the point of trying anything to make this beast run like the wind......
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TurboBlew
Moderator
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posted January 28, 2004 03:08 AM
nah, not really. I suggest tilting the motor foward, but leaving the bottom mount bolt in. Unless you have really small hands.
Probably about 90mins to get em out.
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psycho1122
Pro
Posts: 1608
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posted January 28, 2004 07:02 AM
 Edited By: psycho1122 on 29 Jan 2004 06:28
Use the instructions in the KHI service book and pull the rail.
It slides out the throttle side easily W/O moving the engine.
At that point, the injectors come off the rail easily.
Send the Injectors to RC Engineering.
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ekn156
Parking Attendant
Posts: 7
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posted January 28, 2004 11:40 AM
U guys are awesome!!!
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