Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums - Reply to Topic
Electrical
Where does this wire go?
Includes Electrical mods, Lights, Stator,
Rectifier, Diagrams, etc

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  Topic Review (Newest First)
05-21-2018 10:17 AM
Spockster
Quote:
Originally Posted by TeamGreen View Post
i'll check both of these out, went to start today, loud thump, then gas came out the rear tail pip again, petcock shuts off when its suppose to, i'll check into how to do the vaccuum seal, i have no idea how to do that, so that'll be the next thing to do. i appreciate the advice, really i do.
The center port on the petcock has the vacuum hose that connects to the side of the left carb. Just check to be sure there's no gas in that hose.

If the petcock isn't leaking through the vacuum hose, there's a good chance a float is stuck in a carb. Sometimes carefully hitting the bottom or sides of the carb will shake the float loose. A plastic screwdriver handle is good.
05-21-2018 04:43 AM
TeamGreen have to adjust carb to get the gas outta the cylinder, correct? petcock is fine, i'll test again, but where else would you start?
05-20-2018 10:58 PM
TeamGreen i'll check both of these out, went to start today, loud thump, then gas came out the rear tail pip again, petcock shuts off when its suppose to, i'll check into how to do the vaccuum seal, i have no idea how to do that, so that'll be the next thing to do. i appreciate the advice, really i do.
05-20-2018 10:44 AM
Spockster
Quote:
Originally Posted by GDI View Post
You may have bad petcock that is leaking gas through your carb into the rear cylinder. Have you checked your oil level? May have gas in the oil as well. You may want to look into that if you haven't already.

GDI
Good point.

Keep checking the vacuum line on the petcock to make sure it stays dry. If it's wet, the petcock diaphragm is blown.
05-20-2018 09:40 AM
GDI You may have bad petcock that is leaking gas through your carb into the rear cylinder. Have you checked your oil level? May have gas in the oil as well. You may want to look into that if you haven't already.

GDI
05-19-2018 11:49 PM
TeamGreen batterys fine, however like a teaspoon of gas came out the rear pipe from rear cynlinder, it's rich, spark plugs were black. so if i have gas leaking into the cylinder, how do I combat that? the battery dies from over cranking, charged it, and when it runs, the battery charges completley. so batt ruled out for now, gas liquid in rear cynlinder...
05-19-2018 10:04 AM
OleDirtyDoc Get it tested

Sent from my Z899VL using Tapatalk
05-19-2018 09:08 AM
michiganteddybear
Quote:
Originally Posted by TeamGreen View Post
just for the sake of argument, rule out the battery. it was brand new. not battery, what causes the clicking sound? again its not the battery!! i say again, it was a slow crank, and i know u wanna say battery cause it was slow, but isnt the starter/or solenoid the one thats suppose to do the cranking?
/start new battery rant
ok, 'new' battery story time..

these batteries will sit on shelves for a LONG time before being sold. I purchased a battery from a 'big box store' about 3 yrs ago. my old one was beyond hope. I got an AGM (same as what was already in mine). I was forced to purchase the ONLY one in stock, and it turns out, that NEW battery was over 2 yrs old based on manufacture date. last year, I had to replace that battery (again, was done for), and the same store had several to choose from this time. I went thru all the batteries they had, and the 'newest' one was almost a year old!

Now, many of you may ask why I was 'forced' to get that first battery. At that time, the VN750 was my ONLY transportation and I needed it to be on the road, not able to wait for a battery to come from other sources that take more than 5 mins to arrive.

//end new battery rant


basically, dont trust the new battery you just bought.
05-18-2018 11:01 PM
TeamGreen ok bingo, im with you on that, b/c i made sure the battery was charged, replaced the sparks plugs and they were rich. it started after several cranks, and then i went to go put some pants on so i could test ride, and dammit to hell it wouldn't crank over again! it sputtered twice, and then the battery caved, again. what do? seriously im bugging out...
05-17-2018 03:03 PM
lugnut1009 Oh TeamGreen, the contactor or solenoid on these bikes seems to drop out around 11.5 volts. So it has to have a really good battery and voltage supply.

That being said, I did jump mine off numerous times with my truck and didn't know it could damage the RR. It cranked fine like that with a known bad battery. So I'm not sure it's your battery, but could be a bad starter or bad connection.

ALSO, if your carb is flooding or your tank petcock valve is bad, it could flood your front cylinder and act like a weak battery / bad starter / bad connection etc... because the front cylinder is attempting to compress liquid. Ask me how I know...
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