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Carbs sending fuel into filter not cylinder

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Carbs sending fuel into filter not cylinder 16 Mar 2020 15:55 #821024

  • Bluerider
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Replaced all gaskets on the top end. Now when it fires up (no issues there) carbs 2 and 3 are not sending the fuel into the cylinder but into the pod filters. Put out two fires thus far. Is this more of a ring issue or a carb issue? 1978 KZ1000LTD. no mods but the pod filters and the frame.

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Carbs sending fuel into filter not cylinder 16 Mar 2020 16:20 #821026

  • baldy110
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Check the float levels bet they are to high.

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Carbs sending fuel into filter not cylinder 16 Mar 2020 16:25 #821028

  • TexasKZ
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Yup. Should have been checked when the carbs were rejetted.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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Carbs sending fuel into filter not cylinder 16 Mar 2020 16:34 #821030

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Too high or stuck? Will pull them again later. Did rebuild them last year though. Set the carb height based on book with a micrometer.

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Carbs sending fuel into filter not cylinder 16 Mar 2020 16:36 #821031

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Could be sticking.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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Carbs sending fuel into filter not cylinder 16 Mar 2020 17:32 #821035

  • Nessism
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Sticking likely. Hope you rejetted for the pods or you will be pulling the carbs again in the near future.

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Carbs sending fuel into filter not cylinder 16 Mar 2020 20:26 #821038

  • SWest
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Are the coils connected to the right cylinders?
Steve

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Carbs sending fuel into filter not cylinder 17 Mar 2020 00:55 #821044

  • calum
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To confirm that it's an issue with the floats you could just set the petcock to prime. If it doesn't overflow then the float height should be fine. Are 2 and 3 firing?

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Carbs sending fuel into filter not cylinder 17 Mar 2020 03:01 #821045

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This just happened to me after doing a carb rebuild. I thought I did everything right. Ultrasonic cleaned. New O-Rings, gaskets, rejet etc.

When I started the bike fuel was flowing from the pods. All 4. The bike was running but something was very wrong.

Could not be a case of stuck valve if all 4.

I had installed the needles upside down. Stupid mistake.

Make sure you drain your oil as it will likely be contaminated with gas.
1979 KZ1000B3 LTD Glacier Green

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Carbs sending fuel into filter not cylinder 17 Mar 2020 05:46 #821049

  • jayrodoh
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calum wrote: To confirm that it's an issue with the floats you could just set the petcock to prime. If it doesn't overflow then the float height should be fine.


Good troubleshooting tip, if float levels are correct and needles are seating properly you should be able to leave a petcock on prime (or on for a manual one) without any leakage from carbs.
1982 KZ750-M1 CSR

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Carbs sending fuel into filter not cylinder 21 Mar 2020 11:49 #821312

  • baldy110
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Float height has nothing to do with float level. Float level is what you need, set the levels using the wet method as described in the manual.
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Carbs sending fuel into filter not cylinder 21 Mar 2020 12:01 #821316

  • Mikaw
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calum wrote: To confirm that it's an issue with the floats you could just set the petcock to prime. If it doesn't overflow then the float height should be fine.


Not a true statement. Don’t trust the measurement method. It’s just to get you close. The only true float level is achieved by the wet method as Baldy110 states. Been there done it. Truly a PITA. COMPLETELY WORTH IT
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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