AFR RESULT

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Re: AFR RESULT

Today 05:42
#924902
Maxbou92 wrote:
I think about it.. does my Air corrector could be not right for my bike?
The air correctors are the right size for the CARBS regardless of what bike they are on.
 
AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
www.kzrider.com/forum/23-for-sale/611992...lide-mikunis?start=1






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Re: AFR RESULT

Today 05:46
#924903
Thank you Zed!! I just try to figure out my richness problem..
Kz750e 1980

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  • Wookie58
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Re: AFR RESULT

Today 05:48
#924904
Maxbou92 wrote:
Thank you Zed!! I just try to figure out my richness problem..
What condition are your choke plungers in ?
 
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca

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Re: AFR RESULT

Today 05:49
#924905
Brand new!! Niche one
Kz750e 1980
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Re: AFR RESULT

Today 05:56
#924906
Maxbou92 wrote:
Brand new!! Niche one
Are they closing fully ? on my BS34's the linkages where bent (probably from being pulled too hard) so they weren't seating fully until I straightened the bracket (when the choke is off can you push the plungers down at all ?
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca

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Re: AFR RESULT

Today 06:02
#924907
Yes they are!!! I try to push them down yesterday.. everything is ok with plungers!! Float level 3-4mm with clear tube (26mm with my rule) !! I have never experimented problems like that with my ATV !!!  I love my old KZ that why I keep going with it !!
Kz750e 1980

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  • Wookie58
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Re: AFR RESULT

Today 06:11
#924909
Maxbou92 wrote:
Yes they are!!! I try to push them down yesterday.. everything is ok with plungers!! Float level 3-4mm with clear tube (26mm with my rule) !! I have never experimented problems like that with my ATV !!!  I love my old KZ that why I keep going with it !!
Doesn't make a lot of sense, are your #15 pilots genuine Mikuni or have they been reamed out by somebody trying to clean them ?
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca

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Re: AFR RESULT

Today 06:15 - Today 06:16
#924910
I know!!! I disassembled all of them before dyno last year to clean them in Ultrasonic Machine..  all jets are Mikuni one!! Could it be my Porting?! Valves are on specs (rebuilt engine)  my idle is now set at 13.5 - 14 afr. 1/8 throttle bang 10afr
Kz750e 1980
Last edit: Today 06:16 by Maxbou92.

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Re: AFR RESULT

Today 06:24
#924911
Maxbou92 wrote:
I know!!! I disassembled all of them before dyno last year to clean them in Ultrasonic Machine..  all jets are Mikuni one!! Could it be my Porting?! Valves are on specs (rebuilt engine)  my idle is now set at 13.5 - 14 afr. 1/8 throttle bang 10afr
I wouldn't think so - worth investigating injected's ignition theory - do you know anyone with a crypton style tuner that can measure the Kv in your plug leads when running ?
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca

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Re: AFR RESULT

Today 07:40
#924912
Humm no I dont!!  Today I will try it with my Needle on clip one and then 0.3mm washer!! I just finished to synchronize my carbs with my gauge.. I have another CDI on my box, OEM one from eBay.. thats my last option!! 
Kz750e 1980

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Re: AFR RESULT

Today 12:34 - Today 12:36
#924916
Maxbou92 wrote:
Thank you, so weak spark can happen at low rpm and can be perfect at WOT ?!
A weak spark at idle will not impede engine function at higher RPM.

At higher engine speeds, the ignition system fires much faster, this builds builds more primary current in the ignition coil. Higher cylinder pressures, and turbulence at increased RPMs help the fuel-air mixture ignite more easily, temporarily masking a weak spark.

 
1978 KZ650B2 w 1197cc Z1 engine
1977 KZ650B1 w 750cc Spectre engine
1979 KZ650C3 w 831cc Hot Rod engine
1978 KZ650C2 w 762cc DFI project
1977 KZ650C1 stock restoration project
1978 KZ650B2 modified project
1978 KZ650B2 Injected Drag 831cc
1980 Z1 Custom Frame Drag 1327cc
1981 Z50R Honda tow bike
Last edit: Today 12:36 by Injected. Reason: sp
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Re: AFR RESULT

Today 13:22
#924918
Injected wrote:
Maxbou92 wrote:
Thank you, so weak spark can happen at low rpm and can be perfect at WOT ?!
A weak spark at idle will not impede engine function at higher RPM.

At higher engine speeds, the ignition system fires much faster, this builds builds more primary current in the ignition coil (how does that work given that the "re-charge" time is shorter at higher revs ?). Higher cylinder pressures, and turbulence at increased RPMs help the fuel-air mixture ignite more easily, temporarily masking a weak spark. (I was always under the impression that the higher the pressure the harder the spark has to work, hence why plugs that spark outside the cylinder don't always spark when in the cylinder under pressure ?)


 
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca

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