failed emissions test

  • jklcycles
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  • Avondale, AZ
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05 Jun 2010 17:20 #373750 by jklcycles
failed emissions test was created by jklcycles
Well last year she just squeaked by. Not this year.
HC limit is 1800. She was 1858. CO limit is 5.50. She was 5.91. I am running the stock 28mm carbs. I have a set of 26mm from a KZ1000. Anyone know if the 26mm would run leaner? Any suggestions?

1975 Z1-B. Current project.
1977 KZ1000. Future project.

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  • TeK9iNe
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05 Jun 2010 17:32 - 05 Jun 2010 17:33 #373752 by TeK9iNe
Replied by TeK9iNe on topic failed emissions test
These tests are usually done at idle or very small throttle inputs.

Just put in 1 size smaller pilot jet and tune it real lean on the screws before the test.

Ride it for at least an hour before hand, then keep tuning the screws leaner and leaner and raise the idle, till it starts to hesitate when pulling away, then backup your screw changes by a half turn.
Then your good to go!

GL!

B)

Motorcycle Shop Owner/Operator

79 Kawie Z1000 LTD
81 Kawie Z1000 CSR
83 Honda VT750C A
85 Kawie GPZ900 A2
86 Zukie GS1150 EG
93 Yamie XV1100 E
Lucky to have rolled many old bikes through my doors ;)
Last edit: 05 Jun 2010 17:33 by TeK9iNe.

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05 Jun 2010 18:11 #373764 by otakar
Replied by otakar on topic failed emissions test
Go get yourself a couple of bottles of 99% rubbing alcohol and run your tank down to about a gallon of gas and add one 16oz bottle. I used to do this on my 91 Grand Wagoneer and it worked every time. One time they even took it to a second stall because they taught that something happened to the test equipment. Once you pass the test than fill up the tank right away because you will be quite lean.

74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000

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05 Jun 2010 18:28 #373770 by Old Man Rock
Replied by Old Man Rock on topic failed emissions test
Trick Larry taught me on the first emission test pre jetting...

1) Ride to the testing station.

2) Before going in line, lean out the pilots where barely idling on it's own. ~ 1 - 1.5 turns.

3) Tweak back "Rich ~ 1/16th to 1/8th turn so it does idle during the test... As you know, once the test starts you're not allowed to touch/tweak in the bay...

4) Turn the engine off and then try and restart... If she is too hard to start or you have to choke her way out to start, tweak them a tad (1/16th of a turn) richer.

5) Take her in the bay...

Following this procedure, at the time I did this last year, my jets where off as follows and still easily passed...;)

Main Jets: Have dropped 2 sizes
Slow Jets: (pilots) dropped 2 sizes
Needle: Dropped 1 size leaner

I just had to go through myself, was slightly over mid way in the measurements.... June, this may no longer be required... :woohoo:

1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter

Phoenix, Az

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  • larrycavan
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05 Jun 2010 18:32 #373771 by larrycavan
Replied by larrycavan on topic failed emissions test
Dave was recently in Chicago and took a picture of Otto in the garage..

Here it is...
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05 Jun 2010 18:46 - 05 Jun 2010 18:48 #373777 by Old Man Rock
Replied by Old Man Rock on topic failed emissions test
:laugh: :laugh: :laugh: That's about right....

BTW, does Lucas products explode when flamed...

1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter

Phoenix, Az
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Last edit: 05 Jun 2010 18:48 by Old Man Rock.

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06 Jun 2010 05:09 - 06 Jun 2010 05:10 #373842 by otakar
Replied by otakar on topic failed emissions test
Just went to my In-laws over the holiday. My 420Hp XJR Jag. gave me 34MPG on the highway with my special brew. I bet there are a few on this web sight that dont get that from their KZs. :blink: ;) B) Oh and yes it passes EPA with flying colors. :blush: That's not bad for a 5700# sled.

74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Last edit: 06 Jun 2010 05:10 by otakar.

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06 Jun 2010 05:18 #373844 by Old Man Rock
Replied by Old Man Rock on topic failed emissions test
"420Hp XJR Jag. "... Glows bright florescence green... :blink:

Brings up another thought....

When was the last time a thorough tune up was performed?
Valve clearances, carb sync, ignition timing etc...

Assumption is it runs well, no smoke, sparkies look good not black/carbon/oiled/soot etc...

1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter

Phoenix, Az

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06 Jun 2010 05:27 #373845 by otakar
Replied by otakar on topic failed emissions test
Old Man Rock wrote:

"420Hp XJR Jag. "... Glows bright florescence green... :blink:

Brings up another thought....

When was the last time a thorough tune up was performed?
Valve clearances, carb sync, ignition timing etc...

Assumption is it runs well, no smoke, sparkies look good not black/carbon/oiled/soot etc...


Your just jealous because your A4 only gets 32MPG. (and that is if you push it for the last two miles) :laugh: ;)

74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000

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06 Jun 2010 06:01 #373851 by Old Man Rock
Replied by Old Man Rock on topic failed emissions test
:blink:

1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter

Phoenix, Az
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06 Jun 2010 06:05 #373854 by otakar
Replied by otakar on topic failed emissions test
Old Man Rock wrote:

:blink:


It's only in that configuration when my wife is driving. But also than the millage is a bit lower. :P

74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000

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  • larrycavan
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06 Jun 2010 07:01 #373865 by larrycavan
Replied by larrycavan on topic failed emissions test
:woohoo:

When it comes to bikes....I'll take BHP over MPG ;)

How about some pics of that Jag :)

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