Running on one cylinder

jacksdad
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1979 kz 750 OUCH, IT SPARKED
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Running on one cylinder

15 Apr 2013 14:46

So I have figured it i'm only running on one cylinder, its a twin,
I have observed fuel getting to the carburetor, am getting spark on that side, anybody got any ideas as to why,
After a short ride in the neighborhood, came back to check temperate of exhaust,.right side, about 175, left side, not even a hundred.
Any advice as to what to start checking for would be greatly appreciated.

1979 kz750 twin cyl.

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Patton
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Re: Running on one cylinder

15 Apr 2013 15:03

#582479

Could start with compression test and assure valve clearances within specs.

Good Fortune!

1973 Z1
KZ900 LTD

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stevie g
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Re: Running on one cylinder

15 Apr 2013 15:55

#582490

Have you tried swapping over the plugs ? just because it's firing does not mean that the plug is good. I've bought new duff plugs before. Other than that you could look to see if any of the jets are blocked. I would start at the plug though, then the cap, lead, try swapping the coils over and if it's definitely sparking then try the fuel supply starting from the tank down, fuel line etc.

stephen g mackay

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jacksdad
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Re: Running on one cylinder

15 Apr 2013 19:06

#582528

What y'all think, 175 after a mile long ride, at 25-30 sound good?

1979 kz750 twin cyl.

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steell
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Re: Running on one cylinder

15 Apr 2013 19:26

#582533

I think it's way to cold, seems like 300 or so would be right.
A lot depends on ambient air temp also.

KD9JUR

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jacksdad
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Re: Running on one cylinder

15 Apr 2013 19:46

#582536

It was high 50's, low 60's

1979 kz750 twin cyl.

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jacksdad
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Re: Running on one cylinder

20 Apr 2013 12:30

#583276

Is this float upside down?

1979 kz750 twin cyl.

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jacksdad
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Re: Running on one cylinder

20 Apr 2013 12:31

#583277

Supposed to be a picture?

1979 kz750 twin cyl.

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jacksdad
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Re: Running on one cylinder

20 Apr 2013 12:40

#583278

There it is.

1979 kz750 twin cyl.

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jacksdad
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Re: Running on one cylinder

20 Apr 2013 22:40

#583372

Nevermind, figures it out, dumb me had a crimp in the left fuel line.
Feeling kinda stupid right now.

1979 kz750 twin cyl.

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jacksdad
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Re: Running on one cylinder

20 Apr 2013 22:41

#583373

Can delete thead

1979 kz750 twin cyl.

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650ed
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Re: Running on one cylinder

20 Apr 2013 22:59

#583379

jacksdad wrote: Nevermind, figures it out, dumb me had a crimp in the left fuel line.
Feeling kinda stupid right now.

I'm glad I never did that (well, only once). :laugh: Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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