i need help really bad - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 16 (permalink) Old 05-04-2012, 08:34 PM Thread Starter
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i need help really bad

ok here we go so i bought this bike and the battery was bad when i went to look at it we put a charger on it and it fired up and sounded a little rough then i noticed the clear liquid dripping out of the left carb so i didnt test ride it i negotiated the price and bought it as it was when i got it home i bought a new bat and went thru the long process of properly charging the thing so i know thats not the issue i put the bat in and it fired off and away i went (oh before you ask i tightened the drain screw on the carb and the leak stopped) i made a few laps around the lot then rolled into the garage to adjust the idle
i lowered the idle and rolled back out of the garage eased out of the clutch and it died this is what i did since
added fuel
changed plugs (new ngk coppers)
checked to make sure the fuel was on and it was
checked for spark (front head has it back head doesnt)
switched front and back coils and still front is sparking back is not
wasted 120 bucks on an igniter
made it backfire loud twice out of the right side pipe which is the one to the front head

I am an automotive mechanic and im good with cars but i have no clue what is going on with this bike so someone please help
oh and what is the compression suposed to be at
i have no car right now this bike is my only means of transportation i need it fixed asap im in south west houston if anyone can help i will gladly pay them a reasonable rate
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post #2 of 16 (permalink) Old 05-04-2012, 09:15 PM
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first off...welcome!

NGK Iridium plugs and a strong battery (AGM maintenance free) are almost a must for these bikes.

Read through the verses section and you will find a lot of good information to get you started.

measure the battery voltage at idle and then at 4K RPM....you should see a rise in voltage to about 14V at higher RPM, which tells you your charging system is working. At idle, you may actually be draining the battery. If you don't see a rise in voltage, you need to test the Stator and the regulator/rectifier (R/R).

You can find those tests by searching for them on this forum using the Google search bar at the top of the page.

Good luck and let us know what you find out....we will go from there.
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post #3 of 16 (permalink) Old 05-04-2012, 09:43 PM Thread Starter
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thanks for the advice but im on a low budget and i will be upgrading to a new gel battery and iridium plugs soon however i have a brand new fully charged battery and brand new ngk coppers and it wont start so i cant check the if it is charging or not i have no fire to the back head but the coils are tested good also i have about 130 to 150 compression on the back head and only 60 to 90 on the front what does that mean
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post #4 of 16 (permalink) Old 05-04-2012, 09:58 PM
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Originally Posted by new rider 9984 View Post
thanks for the advice but im on a low budget and i will be upgrading to a new gel battery and iridium plugs soon however i have a brand new fully charged battery and brand new ngk coppers and it wont start so i cant check the if it is charging or not i have no fire to the back head but the coils are tested good also i have about 130 to 150 compression on the back head and only 60 to 90 on the front what does that mean
For one, please use things like periods (.), commas (,), and other grammatical tools. That run-on sentence really hurt my head.

Check your other thread, as Rebel13 thinks its a pickup coil based on what you've said there.

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
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post #5 of 16 (permalink) Old 05-04-2012, 10:03 PM Thread Starter
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I'm sorry man. i didn't think a bunch of bikers would care about grammar. I was wrong. I miss judged you. My apologies....
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post #6 of 16 (permalink) Old 05-04-2012, 10:07 PM
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Quote:
Originally Posted by new rider 9984 View Post
I'm sorry man. i didn't think a bunch of bikers would care about grammar. I was wrong. I miss judged you. My apologies....
Oh it's not really grammar per say, it's just hard to read 500 words without any punctuation at all! Helps separate the thoughts so we can understand your problem better.

I am also not a typical "biker", but a network engineer for an ISP by trade. All types ride bikes it seems!

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
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post #7 of 16 (permalink) Old 05-04-2012, 10:21 PM Thread Starter
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Yes it does seem that all types ride these days. I am a poorly paid auto mechanic in Houston Texas. i make about 1200 a month and get free rent since I live at the shop I work for. The short and not so sweet of me is that i am as redneck as they come and i have only been riding for a few months on my brother in laws 02 shadow 750. As soon as i get my bike rolling again he wants to ride it cause he thinks its gonna be faster than his and i concur.
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post #8 of 16 (permalink) Old 05-05-2012, 12:30 AM
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Quote:
Originally Posted by new rider 9984 View Post
I'm sorry man. i didn't think a bunch of bikers would care about grammar. I was wrong. I miss judged you. My apologies....
wE'RE A BUNCH OF OLD FARTS WITH BAD VISION. Crap, had my caps lock on and too lazy to delete and re-type. Do you have fire coming out of the back coil? Unlikely the both plug wires to the rear are bad, but could happen.

MCCT Mod
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12 Volt Receptacle Mod
Memphis Shades Santa Cruz
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post #9 of 16 (permalink) Old 05-05-2012, 12:56 AM
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Did you check or by-pass the side stand safety switch.

02 honda sabre 1100
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post #10 of 16 (permalink) Old 05-05-2012, 02:01 AM Thread Starter
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side stand switch has been bypassed i think cause i put the stand down with it running in first gear and it didnt cut off
i already checked the plug wires and switched them with the front two they are extra long
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