Welcome, Guest
Username: Password: Remember me

TOPIC:

How to get fuel to the carbs without a tank 22 Jul 2021 20:14 #852313

  • 750 R1
  • 750 R1's Avatar
  • Offline
  • User
  • Posts: 728
  • Thank you received: 167
Leave it connected up as you have it and remove one side of the black rubber hose from the carbs until the fuel starts to flow, if it flows, check the other side I've had an air bubble hold up flow before, worth a try. Sure the fuel bowls aren't already full ?

Please Log in or Create an account to join the conversation.

How to get fuel to the carbs without a tank 22 Jul 2021 21:12 #852324

  • Scirocco
  • Scirocco's Avatar
  • Offline
  • Premium Member
  • Never change a running system
  • Posts: 3252
  • Thank you received: 1424
Are you sure you didn´t install the floats upside down????

Please Log in or Create an account to join the conversation.

How to get fuel to the carbs without a tank 23 Jul 2021 01:30 #852327

  • Kidkawie
  • Kidkawie's Avatar
  • Offline
  • User
  • I bleed premix
  • Posts: 1849
  • Thank you received: 211
pull the bowl drains and blow into the tube with your mouth, not compressed air.
1975 Z1 900
1994 KX250 Supermoto
2004 KX125

Please Log in or Create an account to join the conversation.

How to get fuel to the carbs without a tank 23 Jul 2021 03:48 #852330

  • motoaddict
  • motoaddict's Avatar Topic Author
  • Offline
  • User
  • Posts: 32
  • Thank you received: 8
"Try venting the bottle" - Bottle is open on the top you can pour gas right in
 
"Are you sure you didn´t install the floats upside down????" - I remember thinking during assembly if I was installing the float the right way but quickly realized the design is such that the you could not push in the float pin if it the float upside down. 

"Sure the fuel bowls aren't already full ?" - Not a drop comes out of the bowl drain

"pull the bowl drains and blow into the tube with your mouth, not compressed air." - i can give this a shot!  

Thanks for all the comments , this really is a great community. 

Please Log in or Create an account to join the conversation.

How to get fuel to the carbs without a tank 23 Jul 2021 07:03 #852339

  • Nessism
  • Nessism's Avatar
  • Offline
  • Sustaining Member
  • Posts: 5849
  • Thank you received: 1764
Where did you get the brass fuel Tee's?  I've seen some crazy things with parts like those where they were not cross drilled so fuel couldn't flow through them.  I've also seen carbs assembled out of order where the fuel tee was feeding a blocked passage, and the open passage was on the other side of the carb.

Please Log in or Create an account to join the conversation.

How to get fuel to the carbs without a tank 23 Jul 2021 07:05 #852340

  • TexasKZ
  • TexasKZ's Avatar
  • Offline
  • Platinum Member
  • Posts: 6076
  • Thank you received: 1490
Does fuel come out of the hoses when they are not hooked up to the carbs?
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

Please Log in or Create an account to join the conversation.

How to get fuel to the carbs without a tank 23 Jul 2021 09:44 #852356

  • motoaddict
  • motoaddict's Avatar Topic Author
  • Offline
  • User
  • Posts: 32
  • Thank you received: 8
"Where did you get the brass fuel Tee's?" I made them!   www.kzrider.com/forum/3-carburetor/615976-vm26ss-fuel-tee

"...assembled out of order where the fuel tee was feeding a blocked passage" - not the case here

"Does fuel come out of the hoses when they are not hooked up to the carbs?" Sure does. a lot of it!

I will provide an update when I dig in deeper this weekend. I am sure it's something dumb that I did
 

Please Log in or Create an account to join the conversation.

Last edit: by motoaddict.

How to get fuel to the carbs without a tank 23 Jul 2021 11:01 #852365

  • Rick H.
  • Rick H.'s Avatar
  • Offline
  • User
  • Posts: 817
  • Thank you received: 197
Well my, my, my, now this topic is getting interesting.  We know that fuel runs thru the aux tank and line and we know per the OP the lines are hooked up to the correct fuel inlet orifice yet nothing goes into none of the carbs.  My next step would be to connect a hose to the fuel inlet tee and blow thru the hose to see if air passes thru.  I would not use a compressor for this, just hot air from me.  If no air passes then the next step is why and that should be easy to figure out.  There isn't much left in the circuit to check.

Rick H.
Rick H.

1977 Kawasaki KZ-1000A1

Please Log in or Create an account to join the conversation.

How to get fuel to the carbs without a tank 23 Jul 2021 13:06 #852375

  • TexasKZ
  • TexasKZ's Avatar
  • Offline
  • Platinum Member
  • Posts: 6076
  • Thank you received: 1490
Interesting indeed. What are the chances of four stuck float valves?
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

Please Log in or Create an account to join the conversation.

How to get fuel to the carbs without a tank 23 Jul 2021 14:03 #852378

  • Nessism
  • Nessism's Avatar
  • Offline
  • Sustaining Member
  • Posts: 5849
  • Thank you received: 1764
How about dropping one of the outside bowls so you can check fuel flow?  

Please Log in or Create an account to join the conversation.

How to get fuel to the carbs without a tank 27 Jul 2021 16:21 #852658

  • motoaddict
  • motoaddict's Avatar Topic Author
  • Offline
  • User
  • Posts: 32
  • Thank you received: 8
Ok so I got to the bottom of this. I swung the carbs out without disconnecting the cable linkage and took off the float bowls. What I realized is that the valve seat gaskets were about twice as thick as the originals. This added thickness helped to push the valves shut and cut off fuel flow. I turned new ones and got it all back together and viola, she started right up. First time in about 30 years. Saved another one from being stripped for parts.

So now that it runs, what is the first thing I should do? I am thinking do a valve shim adjustment first (replacing the cover gasket), check the points and time the ignition second, then sync the carbs. 


 

 

 

 

Also polished the original valve seats and reinstalled. 

 

 
Attachments:

Please Log in or Create an account to join the conversation.

Last edit: by motoaddict.

How to get fuel to the carbs without a tank 27 Jul 2021 18:16 #852663

  • Mikaw
  • Mikaw's Avatar
  • Offline
  • Sustaining Member
  • Posts: 3225
  • Thank you received: 810
If that was the problem then the float level wasn’t set. You need to get that correct. Aslo those float seat are not Mikuni. There is a square within a square logo on all Mikuni parts. As far as other item, yes, valve lash, timing. Sync of carbs is after float level, then adjust air idle to best idle, then sync. After sync tweak the air pilots again. 

move the clutch perch to the other side of the LH control. Adjust the clutch cable. Check the charging system, brakes, 

Thanks for saving another one. 

 
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
Attachments:

Please Log in or Create an account to join the conversation.

Last edit: by Mikaw.
Powered by Kunena Forum