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-   -   Sputtering and Idling (https://www.vn750.com/forum/11-vn750-general-discussion/70321-sputtering-idling.html)

OrlandoVulcan 04-18-2015 05:53 PM

Sputtering and Idling
 
Please forgive the immediate barrage of questions to the board pertaining to my "new" bike, but I'm getting a little frustrated with a problem that it has.

When it gets good and hot, it sputters on acceleration. Higher RPMs tend to smooth it out, but a fresh gear really shows it unless I gun it.

I have a gas leak in a hose that I've shown here, before. I've fixed the leak to an extent, but I need to do a little better with it.

Anyway, the sputtering happens when it's colder, too, but it isn't as "distinguished". It's REALLY there when the bike heats up.

There are no mods done to this bike, so it's pretty stock, that I can tell. I have changed the spark plugs in it, but that hasn't really seemed to help.

Also, at times, when it's idling, it goes from high revving to low revving and back again, sometimes, on its own. If I rev it up while I'm in neutral at a stoplight or something, sometimes it takes it a while to come back down.

Any ideas here?

michiganteddybear 04-18-2015 06:32 PM

sounds like a vacuum leak some place.

around the boots is common. they have been known to crack and dry out

OleDirtyDoc 04-18-2015 06:59 PM

39 Attachment(s)
Get out some starting fluid and spray the boots while the bike is running .if she revs than bingo

Knifemaker 04-18-2015 08:54 PM

You can use WD 40 too...

Spockster 04-18-2015 10:07 PM

I don't think WD40 burns anymore, but it should make it stumble.

OleDirtyDoc 04-18-2015 10:24 PM

39 Attachment(s)
Yup it'll stumble

OrlandoVulcan 04-18-2015 11:32 PM

I thought my boots looked pretty good. Not really cracked or anything, at least not where they attach to the carbs. Could it be further up?

I might be lacking the lingo here, though. I assume the boots are the big black hose that attaches to the carb? Whatever that big black hose is, it seems to be pretty fine.

OleDirtyDoc 04-18-2015 11:57 PM

39 Attachment(s)
Between carb and motor


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