Colourtune and spark plug condition

  • Warren3200gt
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Re: Colourtune and spark plug condition

28 May 2019 13:04
#804726
Still looks a little bit rich to me. Especially no 3.

Z1000J2 somewhat modified!

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Re: Colourtune and spark plug condition

28 May 2019 13:46
#804729
Warren3200gt wrote: Still looks a little bit rich to me. Especially no 3.

Agree looking forward to take them out tomorrow, I hope I don`t have to high RPM back and forth to work... try to not go over 3...
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Re: Colourtune and spark plug condition

31 May 2019 03:01 - 31 May 2019 04:34
#804925
I don`t see big difference...

I have adjusted more out:

Cylinder 1: 1/2 out
Cylinder 2: 1/4 out
Cylinder 3: 1/2 out
Cylinder 4: 1/8 out

Picture below is before I was turned out according to table above. I have now inserted new spark plugs and not cleaned one.
I need to wait some days to see the results, need to fix the threads on spark plug 2 first...

Cylinder 1:


Cylinder 2:


Cylinder 3:


Cylinder 4:
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Last edit: 31 May 2019 04:34 by gordone.

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  • VTEC
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Re: Colourtune and spark plug condition

02 Jun 2019 12:38 - 02 Jun 2019 12:47
#805030
Just installed an A/F gauge. Used a gauge pod and a generic mirror bracket for mounting. O2 sensor is underneath after the collector where it can't be seen.



KZ1000-K2
ZRX1100
XR400R
Last edit: 02 Jun 2019 12:47 by VTEC.
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Re: Colourtune and spark plug condition

06 Jun 2019 13:25
#805262
New spark plug and back and forth to job again... tried to keep it around 2rpm not up to 3 these time....

Cylinder 1:


Cylinder 2:


Cylinder 3:


Cylinder 4:


What do you think?

1 = Is good ?
2 = could be some better?
3= to lean ?
4 = to rich ?

I have not any new spark plug now, so need to clean them best I can....
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Re: Colourtune and spark plug condition

06 Jun 2019 13:42
#805263
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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  • Warren3200gt
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Re: Colourtune and spark plug condition

07 Jun 2019 04:00
#805286
1 & 3 look pretty good to me. 2 & 4 still look rich.

Z1000J2 somewhat modified!

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  • SWest
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Re: Colourtune and spark plug condition

07 Jun 2019 07:24
#805299
Looks like you can dial them out using the pilot screws.
Steve
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Re: Colourtune and spark plug condition

07 Jun 2019 13:30 - 08 Jun 2019 01:06
#805317
I cleaned the spark plug today, please see picture below, it was to hard to get them to look as new, but hopefully is it good enough....
I also adjusted the air screw some out on the carb. who was to rich... with my stomach "feeling" based on the look.

Will try to take a short trip tomorrow or Sunday and keep the RPM under 3RPM.





1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Last edit: 08 Jun 2019 01:06 by gordone.

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Re: Colourtune and spark plug condition

10 Jun 2019 05:57 - 10 Jun 2019 05:59
#805444
I was driving a short trip today, please see picture below its X_6 from today.
It was hard to get the spark plug 100% clean before the test run....

I have only adjusted the 4 cylinder out 1/4.

On Friday will I go on a weekend trip, so not more adjusting right now....
I will order new spark plug, at least 8, properly 12is good to have and continue adjusting after the trip.
I`m also curious to see how the plugs looks like after the weekend trip.

as I see it has the testing improved the mix`er.

Cylinder 1:


Cylinder 2:


Cylinder 3:


Cylinder 4:
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Last edit: 10 Jun 2019 05:59 by gordone.

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Re: Colourtune and spark plug condition

27 Jun 2019 14:10
#806580
I have been on a weekend trip and driven to work back and forth some times, since last time I checked the spark plugs.
Today took I them out for check the condition.

Cylinder 1:


Cylinder 2:


Cylinder 3:


Cylinder 4:



What do you think about the condition?
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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