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cylinder not firing
- squints
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Its been like this for i dont know how long, i only noticed because I swapped in a 4-1 and that cylinders pipe wasnt blueing. :dry:
SOOO, I was wondering if it running on only 3 of the 4 cylinders for who knows how long would cause any damage?? or other problems down the road? Is it ok to ride as is for now or should I not until its fixed??
traded my classic Kz's for a 2001 Kz1200r
Upstate NY
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- vach
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1979 kz650 B. Chicago, Illinois
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- squints
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ill sort it out eventually, but really my question is it ok to ride for now here and there or should I avoid riding all together until all cylinders function properly.
traded my classic Kz's for a 2001 Kz1200r
Upstate NY
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- vach
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1979 kz650 B. Chicago, Illinois
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- BSKZ650
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you say you are getting fire to the plug, is the plug wet with fuel?, if not then I would think a carb issue may be causing the problem,, but there needs to be a bit more work done to determine what the real issue is
77 kz650, owned for over 25 years
77 ltd1000, current rider
76 kz900, just waiting
73 z1,, gonna restore this one
piglet, leggero harley davidson
SR, Ride captian, S.E.Texas Patriot Guard Riders.. AKA KawaBob
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- Qdude
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- It is all good.
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77 KZ 650 C1.
77 KZ 650 C1.
Crashed-Repaired, Pods, Kerker pipe, re-wired core bundle, lamp upgraded, homemade rectifier, solid state regulator , Dyna-s ignition, repainted, slightly modified, year-round commuter
Honda Metro 85 mpg Scooter. Dont laugh I will throw it at you
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- squints
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kz1`000
traded my classic Kz's for a 2001 Kz1200r
Upstate NY
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- squints
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traded my classic Kz's for a 2001 Kz1200r
Upstate NY
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- Patton
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But is it ok to ride as is in the mean time if requires a little carb fiddleing?? kz1`000
It's too soon to fiddle with the carbs, and would just complicate the diagnosis at this point where ignition and compression are pre-requisite determinations.
#4 plug is most likely fuel-fouled beyond recovery. It might look okay, even newish, and perhaps even spark under no compression -- but it is most likely doornail dead.
Would first install brand new sparkplug in #4.
Next, swap #1 and #4 plug wires -- put #1 wire on #4 plug and #4 wire on #1 plug.
Test run engine to see if non-fire moves from #4 to #1. The non-fire will either continue on #4 or move to #1.
Use water spray bottle to mist exhaust header pipes while engine is running. Do not touch any of the pipes. Hot pipe from firing cylinder will vaporize the water spray with immediate sizzle. Non-firing cylinder allows water mist to just run down the pipe.
Post test results so we'll know how to best proceed.
Good Luck!
1973 Z1
KZ900 LTD
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- modz1r
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NGKs seem very prone to fouling/dying these days.
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- squints
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And to clarify further (that I'm givng rightinfo), while sitting on bike, cylinders are (L-R)1-2-4-3...
traded my classic Kz's for a 2001 Kz1200r
Upstate NY
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- Patton
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ok patton, before i rip everything apart, youre sayin to swap the #1 and #4 ignition cables and plugs. To do this I would 1)simply unscrew cable from ign.coils and swap cables Or 2)are you saying to simply reroute the cable to the different cylinder leaving the connections at the ig coil the same.
And to clarify further (that I'm givng rightinfo), while sitting on bike, cylinders are (L-R)1-2-4-3...
Would first install brand new sparkplug in #4.
Don't remove the plugs -- just leave them in.
Next, swap #1 and #4 plug wires -- put #1 wire on #4 plug and #4 wire on #1 plug.
The plug wires from the coil to #1 and #4 plug are usually long enough to allow swapping them for each other. But if the wires aren't long enough, let us know.
Test run engine to see if non-fire moves from #4 to #1. The non-fire will either continue on #4 or move to #1.
The results of this test will provide some diagnostic clues regarding the ignition.
Good Luck!
1973 Z1
KZ900 LTD
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