Question about 1996 kawasaki VN 1500 Vulcan Classic

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What would cause a 94 vn1500 vulcan to backfire through the front cylinder every time I let off on the gas?and i know its not the carb.

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Hi,,sounds like you might have a tight valve,,check your valve clearances.

Posted on Mar 23, 2011

  • lisamccll Mar 23, 2011

    it sounds like It is a possibility,but it also has automatic valve adjusters.could it still be a tight valve?

  • rzman
    rzman Mar 23, 2011

    Its possible,due to the age of the bike,,is the carb clean and tuned?

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I dismounted the carburetors to clean them, and after do it, I don`t know how to connect the hoses in the carburetors, air filter, gas pump, tank. Somebody have a technical map to connect them?

Posted on Jun 20, 2011

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I have a 1994 Kawasaki Vulcan 88. Accelerate off idle and it shakes bad, continues through the rpm range until its a vibration, plugs don't look bad, carbs cleaned, it only has 15,300 miles on it.


Hi, Jim and the usual suspects are:
1. Wheels and or tires worn or damaged.
2. Engine/transmission/vehicle not aligned properly.
3. Primary chain is badly worn or links too tight as a result of insufficient lubrication or misalignment.
4. Engine to transmission mounting bolts loose.
5. Upper engine mounting bracket loose.
6. Ignition timing incorrect due to a poorly tuned engine.
7. Internal engine problem flywheels have shifted.
8. Broken frame.
9. Stabilizer links worn or loose.
10. Rubber mounts loose or worn.
11. Rear fork pivot shaft nuts loose.
12. Front engine mounting bolts loose.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
1994 VN1500 Bad Engine Vibration
bad engine balancer caused vibration fixed now with pics
Kawasaki VN1500 Service Manual
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http://mybikemanuals.com/kawasaki/kawasaki-vulcan-owners-manuals

Feb 11, 2017 | 1996 kawasaki VN 1500 Vulcan Classic

1 Answer

1997 Kawasaki VN 1500 Vulcan Classic the engine is only firing on 1 cylinder


Hi, Anonymous you need "FIVE" things in order for a cylinder to run properly:
1. FUEL: in order to validate your not getting fuel spray some starting fluid into the air cleaner and hit the starter button, if it fires up and runs for a few seconds then you know you have a fuel delivery issue. Multi carb banks should be bench "SYNC"
2. SPARK: remove the spark plug and with it connected to the spark plug cable ground the threads to something metal you should see a bluish white spark if not you have a faulty spark plug, spark plug cable, ignition coil, condenser, CKP, ECM, sensor or the wiring in between.
3. COMPRESSION: you must have at least 80-100 PSI for most bikes, multi-cylinder engines should be within 10-15% of each other if not perform a leak down test you may have a burnt or bent valve or hole in the piston or broken rings.
4. CAM TIMING: confirm your timing marks are aligned to see if the cam chain or adjuster are worn out and the chain has skipped a couple teeth.
5. IGNITION TIMING: on older bikes check to see if your points have not closed up, timing plate has not become loose and confirm with a timing light for proper retard and advance functions, on newer bikes where timing is controlled by an ECM and is nonadjustable check you CKP, TPS, MAP, O2, sensor or its counterpart for integrity.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Front cylinder not firing on 1500 Kawasaki Vulcan Forum Vulcan Forums
http://www.kawasakimotorcycle.org/forum/kawasaki-cruisers/102776-no-fire-rear-cylinder.html
Kawasaki VN1500 Service Manual
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Jul 01, 2014 | 1997 kawasaki VN 1500 Vulcan Classic

1 Answer

1997 Kawasaki VN 750 Vulcan backfires when throttle released


Hi, Anonymous if your carburetor or exhaust is:
COUGHING is usually caused by an air leak in the intake system and will generally have the same telltale signs, a wet or damp build up of oil/gas seepage at the intake manifold to cylinder head or carburetor to intake manifold connection and in rare instances a worn throttle plate shaft and or seals.
POPPING on deceleration is usually caused by a lean fuel condition or an air leak in the exhaust system and is generally located where black carbon soot is seen as a flashing build up from any joint connection. This condition can easily be remedied by removing and cleaning both joint pieces and reassembling with high temp silicone and torquing the exhaust clamp to the proper spec.
SPITTING is usually caused by a faulty accelerator pump and or nozzle, or the float bowl needle and seat leaking and overflowing through the main jet mixing well nozzle, or the air-fuel mixture screw is adjusted too lean.
BACKFIRING is usually caused by a sticky/tight intake valve or a timing issue, 180 degrees out or cam chain off 1or 2 teeth.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Causes of backfire Kawasaki Vulcan Forum Vulcan Forums
Misfire Backfire Kawasaki Vulcan 750 Forum Kawasaki VN750 Forums
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1997 Kawasaki Vulcan 750 Owner Manual

Apr 12, 2014 | 1997 kawasaki VN 750 Vulcan

1 Answer

2004 Kawasaki VN 800 Vulcan Classic backfiring through the carburetor


Hi, Anonymous if your carburetor or exhaust is:
COUGHING is usually caused by an air leak in the intake system and will generally have the same telltale signs, a wet or damp build up of oil/gas seepage at the intake manifold to cylinder head or carburetor to intake manifold connection and in rare instances a worn throttle plate shaft and or seals.
POPPING on deceleration is usually caused by a lean fuel condition or an air leak in the exhaust system and is generally located where black carbon soot is seen as a flashing build up from any joint connection. This condition can easily be remedied by removing and cleaning both joint pieces and reassembling with high temp silicone and torquing the exhaust clamp to the proper spec.
SPITTING is usually caused by a faulty accelerator pump and or nozzle, or the float bowl needle and seat leaking and overflowing through the main jet mixing well nozzle, or the air-fuel mixture screw is adjusted too lean.
BACKFIRING is usually caused by a sticky/tight intake valve or a timing issue, 180 degrees out or cam chain off 1or 2 teeth.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Backfiring through carb Kawasaki Vulcan Forum Vulcan Forums http://www.kawasakimotorcycle.org/forum/kawasaki-cruisers/21404-backfiring-through-carb.html
KAWASAKI VN800 Service Manual
OEM Parts for Kawasaki
Kawasaki VN800 Owner Manual

Aug 10, 2013 | 2004 kawasaki VN 800 Vulcan Classic

1 Answer

2004 Kawasaki Vulcan 1500 Nomad how to remove the carburetor


Hi, Anonymous for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Kawasaki, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Carb removal on 98 VN1500 Kawasaki Vulcan Forum Vulcan Forums
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Feb 25, 2013 | 2004 kawasaki Vulcan 1500 Nomad

2 Answers

Need radator for kawasaki vn 1500 classic tourer 2001 is the driffter the same radator as the vn 1500 classic plz hellllllllllllp


TO ALL VN1500 OWNERS....This once happen to me,
I went to the garage to start the bike "Nothing ""The first thing is the lights are bright but no turning over,Next you think the solenoid is kaput but the answer was very simple and the fix takes 30 seconds..
Do not take the bike to bits looking for other problems and look at the clutch leaver and you will see some wires going into a plastic shroud going into the switch in the clutch leaver, Make sure this has not popped out if its connection as it some times may do after a few years due to constant turning on the handlebars,
When this is not connected you will have a bike that will not fire up but comes alive and you will hear a clicking noise but this is from the engine carb area and every function of the bike will work but it will not turn over, Worth looking at and saves sixteen quid for a starter unit you never needed.

Feb 06, 2012 | kawasaki VN 1500 Vulcan Classic Tourer Fi...

2 Answers

Vulcan 1993 750 backfire issue everytime i let off


This is often caused by an air leak , inlet manifolds, exhaust gaskets into the head or the gaskets between the headers and muffler.
This is assuming all the rest of the bike is set correctly, valve clearances,airfilter, clean carbs

Jul 16, 2010 | 1993 kawasaki VN 750 Vulcan

1 Answer

Running a little ruff......popping and hesitation and backfiring.


check to make sure you didn't get bad gas some where is it a cali model be couse your carbs can over flow and you will never know it just all goes into the charcoal canister in the front bottom of the radiator is allow raw gas to enter in the air side of the carb un metered

Jun 26, 2010 | 1996 kawasaki VN 1500 Vulcan Classic

1 Answer

1995 vulcan 800 gas comin out carb intake


This sounds like a carb float being stuck open. Turn off the gas and drain the offending carb. Next, turn the gas back on and sharply tap the float bowl with the plastic handle of a screwdriver as the fuel bowl refills. The goal here is to vibrate the float to free it up. If doing this process a couple of times does not free the float I would remove the carb and clean it with a spray carb cleaner. Pay special attention to the float needle. Clean the air filter then re-mount carb. Next Remove the water trap bowl at the bottom of the petcock, (gas valve). Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ). Now would be a good time to install an in-line fuel filter if you don't already have one.

Install new stock spark plugs AFTER you make sure that the bad cylinder is getting spark. Be sure to balance and sync the carbs when finished.

Please rate this solution as " FixYa " if all goes well. Thanks

Mar 27, 2009 | 1995 kawasaki VN 800 A Vulcan

1 Answer

Gas flooding cylinder


i would pull your carbs, clean them and look for wear on your diaphrams and check your floats.

Mar 10, 2009 | kawasaki Full Suspension Mountain Bike Men

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