Bike starts and runs only while choke is on...

Harley Killer
Topic Author
Offline
User
Registered
Posts: 1
Thanks: 0

Bike starts and runs only while choke is on...

21 Dec 2014 12:58

I have a 1979 KZ 1000.... wouldnt start and run..... I adjusted the air flow intake... Bike starts and runs good only with the choke engaged.... when you turn the choke off it backfires through the carbs and dies.... any advice on what I should do next?

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

!Seymore
Offline
User
Registered
Ride on...
Posts: 496
Thanks: 94

Re: Bike starts and runs only while choke is on...

21 Dec 2014 14:32

#656631

Sounds like a REALLY GOOD carb cleaning is in order...

C.

79' KZ650-D2 [fsm] (Max)
83' KZ750-F1 LTD [clymers] (Kay)
82' KZ1100-D1 Specter (another project)
78' KZ650-B2a (J&H, A Project)
91' KZ1000-P (P = parts)

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

SWest
Offline
Sustaining Member
Registered
10 22 2014
Posts: 23575
Thanks: 2954

Re: Bike starts and runs only while choke is on...

21 Dec 2014 16:02

#656645

How are the carb boots to the head? How long has this been happening? Has it sit for a long time?
Harley killer, I like that. They sneer at me until I fire Bossie up, that's when they get mad and look the other way. I've had woman treat me like that and I walk the other way.
Steve

Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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

baldy110
Offline
User
Registered
Posts: 2272
Thanks: 512

Re: Bike starts and runs only while choke is on...

24 Dec 2014 08:55

#656877

Running only with choke is a classic symptom of clogged and dirty carburetors. Your carbs need to be cleaned, pay particular attention to the idle circuit, pilot jets and passageways. Make sure all the jets and carb body passageways are clean and clear.

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

650ed
Offline
User
Registered
Posts: 15339
Thanks: 2833

Re: Bike starts and runs only while choke is on...

24 Dec 2014 09:20 - 24 Dec 2014 09:21

#656878

Do you have the stock air box and filter hooked up to the carbs and are the vacuum caps on tight? Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

Last edit: 24 Dec 2014 09:21 by 650ed.

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