Help with First Restart After Carb Rebuild
- Nessism
-
- Offline
- Sustaining Member
- Posts: 7617
- Thanks: 2979
Re: Help with First Restart After Carb Rebuild
14 Apr 2025 07:16
You might want to try cracking the float bowl drain screws, to verify each float bowl is filling properly.
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0
www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know
1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0
www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know
1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
Please Log in or Create an account to join the conversation.
- SnyperX
-
Topic Author
- Offline
- Sustaining Member
- Posts: 69
- Thanks: 16
Re: Help with First Restart After Carb Rebuild
14 Apr 2025 07:19You might want to try cracking the float bowl drain screws, to verify each float bowl is filling properly.
When I went back to the stock jets I drained the bowls and all 4 had fuel in them. I can try cracking the screw again to see if it has changed.
Regards,
SnyperX
====================
1981 KZ750H2 LTD
SnyperX
====================
1981 KZ750H2 LTD
Please Log in or Create an account to join the conversation.
- Wookie58
-
- Offline
- Moderator
- Posts: 4729
- Thanks: 2831
Re: Help with First Restart After Carb Rebuild
14 Apr 2025 07:38Try laying the leads for #1 & #2 (one from each coil) on top of the cam cover with a spark plug in them and crank the motor you should see an equal spark on each plug (I appreciate this doesn't guarantee it's sparking in the cylinder under pressure but it's a "quick and dirty" test)Hey Wookie!! I am assuming I am getting spark since sometimes it seems to fire up fine and can tell by the sound when all four are firing, not to mention the down pipes are all hot. I mean I suppose the coil could have an intermittent issue? When it does start up correctly it sounds so good with the 4 in 1 exhaust. As I side note I found that the gas tank is leaking at the fuel level switch.Are both coils producing a spark ?
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
Please Log in or Create an account to join the conversation.
- SnyperX
-
Topic Author
- Offline
- Sustaining Member
- Posts: 69
- Thanks: 16
Re: Help with First Restart After Carb Rebuild
14 Apr 2025 14:50Try laying the leads for #1 & #2 (one from each coil) on top of the cam cover with a spark plug in them and crank the motor you should see an equal spark on each plug (I appreciate this doesn't guarantee it's sparking in the cylinder under pressure but it's a "quick and dirty" test)Hey Wookie!! I am assuming I am getting spark since sometimes it seems to fire up fine and can tell by the sound when all four are firing, not to mention the down pipes are all hot. I mean I suppose the coil could have an intermittent issue? When it does start up correctly it sounds so good with the 4 in 1 exhaust. As I side note I found that the gas tank is leaking at the fuel level switch.Are both coils producing a spark ?
Pulled plug #1 and #2. I do see a spark on both, but not crazy bright blue or anything. I will say that both plugs seemed really sooted up. They are a new set so I am surprised they are so sooty being the bike hasn't run for any length of time yet. In addition I drained the float bowls and took a pic of how much fuel I got out of all 4.
Regards,
SnyperX
====================
1981 KZ750H2 LTD
SnyperX
====================
1981 KZ750H2 LTD
Please Log in or Create an account to join the conversation.
- Nessism
-
- Offline
- Sustaining Member
- Posts: 7617
- Thanks: 2979
Re: Help with First Restart After Carb Rebuild
14 Apr 2025 16:09
That looks like plenty of fuel.
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0
www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know
1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0
www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know
1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
Please Log in or Create an account to join the conversation.
- Wookie58
-
- Offline
- Moderator
- Posts: 4729
- Thanks: 2831
Re: Help with First Restart After Carb Rebuild
14 Apr 2025 16:10
What is the voltage at the coils during cranking and when running (check both) plugs will spot if it’s only been running on choke
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
Please Log in or Create an account to join the conversation.
- SnyperX
-
Topic Author
- Offline
- Sustaining Member
- Posts: 69
- Thanks: 16
Re: Help with First Restart After Carb Rebuild
Yesterday 17:02Is getting the voltage of the coils (under the tank?) just a matter a putting a multimeter on the two wires on each coil?What is the voltage at the coils during cranking and when running (check both) plugs will spot if it’s only been running on choke
Regards,
SnyperX
====================
1981 KZ750H2 LTD
SnyperX
====================
1981 KZ750H2 LTD
Please Log in or Create an account to join the conversation.