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Engine idles then dies 15 Oct 2020 12:36 #836918

  • bSzemanKZ440
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Alright, I've charged the battery, seems good. I got the original airbox back on, cleaned the carbs again, and picked up an inline fuel filter. I'll be installing the fuel filter in a like 4 hours and I'll see how she runs.
Also I noticed one of the carbs looked out of sync, so I synced it up with the other ones just to be safe.
Any other tips?
1980 KZ440-B1
1981 KZ650 CSR

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Engine idles then dies 16 Oct 2020 00:10 #836948

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Alright as an update, I got the airbox on, cleaned out my gas tank, installed the inline fuel filter, and charged the battery. She started up pretty quick! She takes a while to warm up but once she does she no longer drops out of idle and dies!
I did notice tho that sometimes it would still seem like when I’m taking off that it’ll have trouble applying throttle, likes it’s bogging out. I don’t know if that just means I’m starting wrong (since this is like my 4th time riding a motorcycle, ever) or if something else is.
Other than that when she gets going, it’s a blast and I’m in love with it.
Thanks for all the help!
1980 KZ440-B1
1981 KZ650 CSR

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Engine idles then dies 16 Oct 2020 07:53 #836978

  • Rick H.
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I find it interesting that you said "one of the carbs looked out of sync, so I synced it up with the other ones". How did you make this determination and more importantly, how did you sync it up with the others? Did you do this visually or via a vacum gauge of some sort or?
Rick H.
Rick H.

1977 Kawasaki KZ-1000A1
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Engine idles then dies 16 Oct 2020 14:01 #837016

  • bSzemanKZ440
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I used a vacuum gauge thingy that I rented from AutoZone
1980 KZ440-B1
1981 KZ650 CSR

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Engine idles then dies 16 Oct 2020 16:18 #837029

  • TexasKZ
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Did it have four gauges and calibrators?
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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Engine idles then dies 16 Oct 2020 16:19 #837030

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Rick H. wrote: I find it interesting that you said "one of the carbs looked out of sync, so I synced it up with the other ones". How did you make this determination and more importantly, how did you sync it up with the others? Did you do this visually or via a vacum gauge of some sort or?
Rick H.

I wuz gonna ask, but just couldn't.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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Engine idles then dies 16 Oct 2020 17:53 #837038

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Yeah the ones that come in the case with the 4 gauges. Bike feels a lot better now, drives perfect, so I guess it worked. Just watched a bunch of YouTube videos. I mean I haven’t hit 50 on the bike yet, I just use it around town so the fastest I’ve gone is like 35.
If I did it wrong, could I tell by sound?
1980 KZ440-B1
1981 KZ650 CSR

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Engine idles then dies 17 Oct 2020 06:58 #837060

  • Rick H.
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I don't suppose you took a picture of the readings you were getting with the four gauges attached to your running engine did you? If not do you recall what you were getting for vacum readings across the carbs? I don't know what the spec is for vacum on your specific bike but it should be in the service manual. Ideally you want the gauges to all read the same. I am not sure about the sound you would hear but if they were way off I would guess you would hear it. The closer you get to ideal readings between the carbs the less you will hear and the more you will have to rely on how it runs out. At 35mph you aren't really taxing the carbs yet. Have you pushed the acceleration yet?
Rick H.
Rick H.

1977 Kawasaki KZ-1000A1

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