NOW I NEED SOME HELP!

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19 Mar 2011 17:45 - 19 Mar 2011 17:48 #440693 by mjg15
NOW I NEED SOME HELP! was created by mjg15
What's wrong with gay rear fenders? Does yours look like this?

TorreyJ wrote: *General statement


Ok wrong forum but seems like you know what you're talking about. the rear fender has to go, where do I get the non-gay rear fender? the strait one back what is that from. .


'80 Z750fx
'81 KZ550A
'81 GPz550's, Too many!
'82 KZ1000R
'82 GPz750
'90 ZR550


Project photo album: s163.photobucket.com/albums/t289/mg15_ph...GPz-ZR550%20project/
s163.photobucket.com/albums/t289/mg15_ph...current=DSC01286.jpg
Last edit: 19 Mar 2011 17:48 by mjg15.

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25 Mar 2011 19:02 #440416 by TorreyJ
Replied by TorreyJ on topic NOW I NEED SOME HELP!
So today was the day I finally got around to trying to get this 1981 kz going. I've worked on everything except motorcycles so any help would be appreciated. I jumped the bike and it started right up with some starting fluid. BOOM. Purrs like a kitten. But I'm not getting fuel. OK, removed tank, cleaned it. dried it. Now I have fuel. I can get it to start up but it just boggs unless, yep more starting fluid. Off the subject real quick, any ATV I've ever owned had on/off/reserve at the petcock? what is res/on/Pri? or mostly i guess, what is PRI? fuel comes through that the best but I noticed that there was fuel POURING out one of the vent tubes. That's super safe! I'm kind of at a loss of where exactly to go from here? please help if you can.

Torrey

the choke seems to do a lot even when it's somewhat warmed up too?

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25 Mar 2011 19:53 - 25 Mar 2011 19:54 #440421 by Patton
Replied by Patton on topic NOW I NEED SOME HELP!
Vacuum operated petcock has res/on/Pri positions where res and on need vacuum to flow fuel and pri flows fuel regardless of vacuum.

Petcock pick-up tube/screen inside the tank may get clogged, which restricts or blocks fuel flow.
A dirty inline fuel filter may also get clogged which restricts or blocks fuel flow.

If gasoline was allowed to enter the carbs without having first gone through a good quality accessory in-line fuel filter, the carbs are likely clogged, especially the fuel valves and pilot circuits.

A dirty leaking float valve allows fuel to keep rising inside the float bowl until it reaches the overflow circuit to escape through the overflow hoses underneath the bike.
When the overflow circuit also clogs, fuel rises far enough to find its way into the crankcase oil.

A dirty pilot circuit can prevent sufficient fuel mixture at idle and lower rpm range.
Adding choke allows some fuel mixture via a separate enrichener circuit.

Good Fortune! :)

1973 Z1
KZ900 LTD
Last edit: 25 Mar 2011 19:54 by Patton.

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25 Mar 2011 20:52 #440432 by gengomerpyle
Replied by gengomerpyle on topic NOW I NEED SOME HELP!

TorreyJ wrote: So today was the day I finally got around to trying to get this 1981 kz going. I've worked on everything except motorcycles so any help would be appreciated. I jumped the bike and it started right up with some starting fluid. BOOM. Purrs like a kitten. But I'm not getting fuel. OK, removed tank, cleaned it. dried it. Now I have fuel. I can get it to start up but it just boggs unless, yep more starting fluid. Off the subject real quick, any ATV I've ever owned had on/off/reserve at the petcock? what is res/on/Pri? or mostly i guess, what is PRI? fuel comes through that the best but I noticed that there was fuel POURING out one of the vent tubes. That's super safe! I'm kind of at a loss of where exactly to go from here? please help if you can.

Torrey

the choke seems to do a lot even when it's somewhat warmed up too?


PRI is prime. you dont want to leave it on prime for to long or you will flood the carbs and cylinders.

1982 GPZ750R1 ELR
1978 Honda CB750F SuperSport
1971 Honda CB750K
1970 Honda CL100 Scrambler

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25 Mar 2011 21:17 #440438 by TorreyJ
Replied by TorreyJ on topic NOW I NEED SOME HELP!
the fact that my whole house smells like gas...yeah, won't make that mistake again. Do the petcocks go bad? any way to test? and i assume it only works on crankcase vacuum? I know i probably need to just go through the carbs... Here's a beginner question. how do i take that damn airbox off?

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25 Mar 2011 21:35 - 25 Mar 2011 21:46 #440441 by mjg15
Replied by mjg15 on topic NOW I NEED SOME HELP!
If fuel flows when the petcock is "ON" and the engine isnt running, then it has a bad diaphram. It's pretty common.

What model?

'80 Z750fx
'81 KZ550A
'81 GPz550's, Too many!
'82 KZ1000R
'82 GPz750
'90 ZR550


Project photo album: s163.photobucket.com/albums/t289/mg15_ph...GPz-ZR550%20project/
s163.photobucket.com/albums/t289/mg15_ph...current=DSC01286.jpg
Last edit: 25 Mar 2011 21:46 by mjg15.

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25 Mar 2011 21:37 - 25 Mar 2011 21:41 #440443 by Patton
Replied by Patton on topic NOW I NEED SOME HELP!

TorreyJ wrote: the fact that my whole house smells like gas...yeah, won't make that mistake again. Do the petcocks go bad? any way to test? and i assume it only works on crankcase vacuum? I know i probably need to just go through the carbs... Here's a beginner question. how do i take that damn airbox off?


NOT crankcase vacuum.
Petcock receives vacuum from intake vac via hose connected to nipple on carb holder or a dedicated vac nipple that resembles one of the the two vent nipples.

Petcocks may sometimes be refurbished to correct function where ON and REServe allow fuel flow only when vacuum is being supplied to the petcock, and PRIme position allows fuel to flow with or without vacuum.

Is there an echo in here? :laugh:

Don't remove the airbox.
Don't remove the airbox.
Don't remove the airbox.
Don't remove the airbox.

Z1E has petcock rebuild kits.

A Factory Service Manual should be a primary "must have."

Good Fortune! :)

1973 Z1
KZ900 LTD
Last edit: 25 Mar 2011 21:41 by Patton.

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25 Mar 2011 22:51 #440460 by TexasKZ
Replied by TexasKZ on topic NOW I NEED SOME HELP!
What Patton said.
What Patton said.
What Patton said.
What Patton said.
;)

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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26 Mar 2011 16:51 #440606 by TorreyJ
Replied by TorreyJ on topic NOW I NEED SOME HELP!
why would i not remove the airbox? how am i supposed to get the carbs off?

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26 Mar 2011 16:57 #440608 by Patton
Replied by Patton on topic NOW I NEED SOME HELP!
Including information about bike year and model may elicit better responses. And it's easy to put in your signature where it will automatically appear in posted messages.

When done, the signature information appears in all posts, past and future. And may be changed as often as desired.

Good Fortune! :)

1973 Z1
KZ900 LTD

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  • TeK9iNe
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  • What did you do!?!
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26 Mar 2011 17:08 - 26 Mar 2011 17:09 #440611 by TeK9iNe
Replied by TeK9iNe on topic NOW I NEED SOME HELP!

TorreyJ wrote: why would i not remove the airbox? how am i supposed to get the carbs off?


you dont remove the airbox first, just pull out the carbs.

Losen the clamps on the front and rear of all the carbs.
Detacth the throttle cables from carbs.
Start pulling :P

The carbs can be difficult to remove if the air box-to-carb holders are hard/brittle, sometimes a heat gun/hot water/space heater can be pointed at them for a bit to soften them up.

Sometimes you can pull the airbox back slightly off the carbs first, then pull the carbs free from engine side, then out the side of the bike.

Good luck!

GET THE SERVICE MANUAL

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: 26 Mar 2011 17:09 by TeK9iNe.

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  • 80% Human 20% Nuts/Bolts
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26 Mar 2011 17:09 - 26 Mar 2011 17:10 #440612 by Proxy
Replied by Proxy on topic NOW I NEED SOME HELP!
Loosen clamps in front of carbs. Remove springs or clamps from rubbers(boots) on back of carbs. Loosen airbox enough to slide back about 1/4 inch. Fold the boots over on themselves (this gives you an extra half inch to an inch. Remove throttle cables from carb rack. I'm assuming you have removed the tank, vent hoses and fuel hoses. Pull the carbs out of the front holders. Slide rack out the side of the bike. Not a fun job but as long as you have nice soft boots it's not too bad either. Nice set of forceps helps get the throttle cables off the carbs but some long pliers will also do. After about a half dozen times you will be a pro. But you will still hate doing it.

Take it from me cuz I found
If you leave it then somebody else is bound,
To find that treasure, that moment of pleasure,
When yours, it could have been.
1977 KZ650 B1 Being restored to original (Green)
1977 KZ650 B1 Original (Red) Sold
1977 KZ650 B1 Donor Bike for Parts
Last edit: 26 Mar 2011 17:10 by Proxy.

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