Author Topic: carb issue  (Read 554 times)

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Offline bacongrease

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carb issue
« on: September 25, 2024, 07:24:24 AM »
 greetings.  76 750f....Recleaned the carbs, now when I start up, it runs wide open then dies.  A little adjustment it idles okay.  What causes this? ?

Offline MauiK3

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Re: carb issue
« Reply #1 on: September 25, 2024, 07:38:35 AM »
something stuck?
very lean?
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline bacongrease

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Re: carb issue
« Reply #2 on: September 25, 2024, 08:07:15 AM »

 it ran well before, (several years ago)  :o     still on startup it races..

Offline Oddjob

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Re: carb issue
« Reply #3 on: September 25, 2024, 09:10:21 AM »
Check for an air leak

Offline newday777

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Re: carb issue
« Reply #4 on: September 25, 2024, 09:21:45 AM »

 it ran well before, (several years ago)  :o     still on startup it races..
Tell us how you cleaned your carbs exactly. You haven't given much to go by.
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline calj737

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Re: carb issue
« Reply #5 on: September 25, 2024, 02:14:17 PM »
Are the slides too high and not closing with the throttle cable? Fuel level in bowls not correct would cause it to die (or even an empty gas tank  ;) ).
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis