rear plugs are BLACK! fronts are ok... what to do?! - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Carbs and Fuel System
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post #1 of 28 (permalink) Old 07-10-2010, 11:23 AM Thread Starter
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Exclamation rear plugs are BLACK! fronts are ok... what to do?!

ok here is list of issues....

bike "sat for 3 years" so i was told by old owner

oil looks dirty (WHAT KIND TO CHANGE IT WITH???? ANYONE??)

sputters when taking off or in gear under 3k ... and backfires like crazy sometimes

wont hold idle for ****.

sounds of pulsing hissing on pass side of carbs... (think i am missing a tiny o-ring for the pass side "COASTING ENRICHER" (page 2-19 FUEL SYSTEM of the service manual on right bottom of page)

i put SeaFoam in the tank and ran it for a lil while to make sure it got into the carbs since it sat for so long.. will be draining carbs today to see if anything nasty comes out of them.

if ANYONE here can help please call me

Will
440-341-7755
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post #2 of 28 (permalink) Old 07-11-2010, 06:36 AM
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The leak you are hearing would more than likely lean out your cylinder. just get a rebuild kit, some pipe cleaners from the hobby shop, and b12 chemtool and go to town cleaning. sometime sea foam just will not cut it. Especially sitting for 3 years. I am not big on the brand name for oil, but alot of my sprot bike friends love amsoil, royal purple (used this stuff in my race cars), and kendal (one of my faves for racing too). since you have had it sitting that long pull you tank, drain the fuel remove the petcock valve and take it to a radiator shop to have it vated. I might even recomend for you to have it coated since it probally has some corosion from moisture. you can buy the tank liner in the part store to do it your self after having it vated. it is a two part mix just put it in the and roll it around to coat the whole inside drain the excess and let air dry.

Harley sportster fenders
custom raked front end
custom exhaust
vn800 tank and guages
modified seat and recovered
rear frame chopped
custom wiring harness
airbox removed
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post #3 of 28 (permalink) Old 07-11-2010, 12:48 PM Thread Starter
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where would i get said carb rebuild kits??? lol
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post #4 of 28 (permalink) Old 07-11-2010, 01:43 PM
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Well i there does not appear to be a kit listed but you dissasemble the carbs useing the free manual floating around here. be shure to soak the rubber gaskets in gas so the do not dry out on you. and cleqan all the orfices and jets. be careful not to damage the needle and seat.

Harley sportster fenders
custom raked front end
custom exhaust
vn800 tank and guages
modified seat and recovered
rear frame chopped
custom wiring harness
airbox removed
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post #5 of 28 (permalink) Old 07-12-2010, 01:02 AM Thread Starter
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update to my bike issues... ok so first i took out the pilot screws and made sure the tapered ends were not damaged or worn off (book said to check and make sure) and then after putting them both back in i had no firing off rear pistons...(verified by touching tail pipes) and then after pulling the spark plugs, the rear plugs were wet btw... i dried them off and and put back in and voila it was getting firing from the right rear plug, but not the left rear... so i popped out each rear plug, one at a time and found the left rear was not sparking ... Sooooooooooo it looks like all i have is a simple fouled plug. so i will be replacing the rear ones as all are new but just looks like i foul'd the one rear so i will get 2 to replace them.

and will update as soon as i get them in.
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post #6 of 28 (permalink) Old 07-12-2010, 01:03 AM Thread Starter
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btw when i checked the aif filters .... SCORE! K&N filters were found!
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post #7 of 28 (permalink) Old 07-12-2010, 02:59 AM
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If you do need the carbs rebuilt ...have lance or carbworks.com do them...

2011 Suzuki VSTROM DL650 with ABS Purchased Jan 28 now with 39,000miles WRECKED JAN 12 ,2013
"To strive, to seek, to find, not to yield."
05 Vulcan 750 26,050miles *Traded in*
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post #8 of 28 (permalink) Old 07-12-2010, 09:33 AM Thread Starter
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Quote:
Originally Posted by KIMMERLING View Post
If you do need the carbs rebuilt ...have lance or carbworks.com do them...
who is "Lance" and Carbworks.com is a false website.
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post #9 of 28 (permalink) Old 07-12-2010, 12:13 PM
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Lance is a member here who lives in Atlanta and has worked on a number of members bikes. Does great work at great prices. You can do a member search and find him.

He meant carbworx.com also highly recommended.

I'm keepin' all the left over parts. I'm gonna use 'em to build another bike!
_____________________________________________
"Black Beauty"
1989 VN750 acquired December, 2008, 6,711 miles
Currently 23,298 miles

Old Blue
2001 Honda CMX250 Rebel acquired July, 2008

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 #10 of 28 (permalink) Old 07-12-2010, 07:21 PM
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thanks for the correction! oops!

2011 Suzuki VSTROM DL650 with ABS Purchased Jan 28 now with 39,000miles WRECKED JAN 12 ,2013
"To strive, to seek, to find, not to yield."
05 Vulcan 750 26,050miles *Traded in*
Ventura guards
MadStadt mount
Givi windshield/Heated grips
Backoff
Riderbeads
Givi 52 topcase
Pat Walsh Crash bars skid plate
OEM centerstand
Headlight modulator
Battery tender
Aquarium thermometer with forward probe mount
Admore LED Lighting/Givi E36N panniers
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