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plug fouling
- rkan
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20 Aug 2009 19:16 #315400
by rkan
1978 KZ650B
plug fouling was created by rkan
the #2 cylinder plug keeps fouling on my '78 KZ650. the other ones haven't had any problem. So I'm wondering if maybe the #2 cylinder is running too rand and the carbs need to be synced or if the #2 carb needs just an air/fuel adjustment. The ignition is the old points system. I am going to try to install the Dyna s system this winter maybe to try and get a stronger spark.
1978 KZ650B
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- Patton
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- KZr Legend
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20 Aug 2009 19:46 #315414
by Patton
1973 Z1
KZ900 LTD
Replied by Patton on topic plug fouling
rkan wrote:
If not already done, would do the following:
Check #2 compression and valve clearances.
Remove #2 plug and visually inspect spark quality. Look for fat blue spark.
Use clear tube test to assure correct fuel level in #2 float bowl. It might be too high.
If pods are fitted, assure #2 pod is clean, not over-oiled, and breathing clearly.
Install brand new sparkplug and test run.
If #2 fouling persists ---
With side-located pilot air screw, turn out counterclockwise 1/2 turn to lean pilot circuit mixture.
With bottom-located pilot mixture screw, turn in clockwise 1/2 turn to lean pilot circuit mixture.
Could try some Seafoam added to fuel tank. Is a long shot effort toward clearing internal carb pilot circuit.
If #2 fouling persists, the carb likely needs disassembly and cleaning, especially all pilot circuit air and fuel passages and pilot jet.
Good Luck!
the #2 cylinder plug keeps fouling on my '78 KZ650. the other ones haven't had any problem. So I'm wondering if maybe the #2 cylinder is running too rand and the carbs need to be synced or if the #2 carb needs just an air/fuel adjustment. The ignition is the old points system. I am going to try to install the Dyna s system this winter maybe to try and get a stronger spark.
If not already done, would do the following:
Check #2 compression and valve clearances.
Remove #2 plug and visually inspect spark quality. Look for fat blue spark.
Use clear tube test to assure correct fuel level in #2 float bowl. It might be too high.
If pods are fitted, assure #2 pod is clean, not over-oiled, and breathing clearly.
Install brand new sparkplug and test run.
If #2 fouling persists ---
With side-located pilot air screw, turn out counterclockwise 1/2 turn to lean pilot circuit mixture.
With bottom-located pilot mixture screw, turn in clockwise 1/2 turn to lean pilot circuit mixture.
Could try some Seafoam added to fuel tank. Is a long shot effort toward clearing internal carb pilot circuit.
If #2 fouling persists, the carb likely needs disassembly and cleaning, especially all pilot circuit air and fuel passages and pilot jet.
Good Luck!
1973 Z1
KZ900 LTD
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- 650ed
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20 Aug 2009 20:35 #315435
by 650ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Replied by 650ed on topic plug fouling
What plugs are you using? Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- timebomb33
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20 Aug 2009 20:48 #315437
by timebomb33
1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
Replied by timebomb33 on topic plug fouling
could also be a bad plug lead try switching 2 and 3around and see if the problem changes cylinders
1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
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- rkan
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