Full choke, all the time - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Carbs and Fuel System
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post #1 of 19 (permalink) Old 07-27-2009, 08:11 PM Thread Starter
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Full choke, all the time

After a seven month deployment (navy) now i have to have the choke full out to keep it from dieing when i stop. And if i shut it off it doesnt start for about ten minuts, suck giting gas someone tokd me it might be the carb, got any ideas.
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post #2 of 19 (permalink) Old 07-27-2009, 09:52 PM
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Could be several things: gunked up carbs, old gas if you didn't use fuel stabilizer, etc. Have you tried adding 4-8 oz. of Sea Foam to a fresh tank of gas? Ride it until it's pretty well empty and add Sea Foam to a second tank of gas. If that doesn't fix it, you're probably looking at a carb cleaning.

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post #3 of 19 (permalink) Old 07-27-2009, 10:01 PM Thread Starter
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Thanks, is the seafoam cheap. Thats about all i can aford at this point. What grade gas should i be running, iv herd 87 and 93?
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post #4 of 19 (permalink) Old 07-27-2009, 10:08 PM
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The local Wal Mart sells a 16 oz. can for $8-9 I think. Also available at most auto parts places. Use 87 octane and save your $. Folks here have reported problems with the higher grade gas.

I'm keepin' all the left over parts. I'm gonna use 'em to build another bike!
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1987 VN750 project bike, acquired August, 2009, 33,000 miles and balancer sticking out of the case, currently awaiting attention and parts
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post #5 of 19 (permalink) Old 07-27-2009, 10:56 PM
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Choke takes away air so if you need that to run it means you need less air because you have less fuel. So you are experiencing fuel restriction somewhere along the way. Given that your bike's been sitting gunked up carbs are the first thing to check. Is your tank rusty? Just fighting the ill effects of that myself. Had my carbs rebuilt and 100% this spring, let some rust get into my system and now I've torn down and cleaned the carbs TWICE to get it back close to where it was.

You gotta keep those carbs clean and keep any contaminants out. Rust or gunk from sitting.


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post #6 of 19 (permalink) Old 07-28-2009, 01:31 AM
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Quote:
Originally Posted by flitecontrol View Post
The local Wal Mart sells a 16 oz. can for $8-9 I think.
They were selling it for $6.86 a can but they took it off their shelves.
I have 4 Wal-Marts around my area and they all quit carrying it.

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post #7 of 19 (permalink) Old 07-28-2009, 03:11 AM
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Quote:
Originally Posted by krebsne View Post
Choke takes away air so if you need that to run it means you need less air because you have less fuel. So you are experiencing fuel restriction somewhere along the way. Given that your bike's been sitting gunked up carbs are the first thing to check. Is your tank rusty? Just fighting the ill effects of that myself. Had my carbs rebuilt and 100% this spring, let some rust get into my system and now I've torn down and cleaned the carbs TWICE to get it back close to where it was.

You gotta keep those carbs clean and keep any contaminants out. Rust or gunk from sitting.
On our carbs the choke does not take away air, the enrichment circuit adds extra fuel. And yes the fuel has turned to gel, clean them out an run 87 octane.


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post #8 of 19 (permalink) Old 07-28-2009, 07:25 AM
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Thanks for the clarification! It's a CINO, eh? Choke in name only?!

Good to know! Sorry for the mis-info.


Current VN: 03 VN1600A

Past VNs: 92 VN750A, 98 VN1500A

Future VN: 94/97 VN1500A basketcase/bobber
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post #9 of 19 (permalink) Old 07-28-2009, 11:25 AM
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Quote:
Originally Posted by jthill524 View Post
They were selling it for $6.86 a can but they took it off their shelves.
I have 4 Wal-Marts around my area and they all quit carrying it.
I saw the stuff at AutoZone for $9 a can. I suspect it can be purchased at any auto parts store. It was in with all the fuel additives...... Octane boost, Lucas, etc.etc.etc.

As mentioned, it'll probably take a carb cleaning, but you might be able to dissolve the "gunk" with a fuel additive. Lucas has treated me well. MANY people swear by the Seafoam.

Also, you might check that some insect or rodent has built a nest in the airbox/filters/air passages. It's happened to me more than twice.

My uncle used to use a green gasoline. I believe it was in a metal can. I wish I could find the stuff again. It's supposed to be like clorox in the bathroom.
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post #10 of 19 (permalink) Old 07-28-2009, 11:48 AM
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Well, you've gotten most all the things I could thing of, so I'll just add...
Thanks for your Navy service!! It's well appreciated!!


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Aim for the apex."

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