Question about 2000 kawasaki VN 1500 Vulcan Classic

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What would cause a 1500 Vulcan to backfire when you let off the throttle?

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Do you mean =out of the carb or out of the exhaust,,well carb backfiring is a very weak mixture and its still burning when the inlet valve opens ,and exhaust is that there is a air leak at an exhaust joint and the heat of the exhaust with the air leak ignites unburnt fuel

Posted on Jul 07, 2010

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Posted on Jan 02, 2017

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I have a 2007 kawasaki vulcan 1500 classic fi ... I love the bike bit when it start to warm up it seems to miss really bad and decelerating it backfires and pops ... what could my problem be ?


Hi, Gregory love that name and the usual suspects are:
1. Spark plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition and leaking.
3. Spark plug gap too close or too wide.
4. Faulty ignition coil, module, and or sensor.
5. Battery nearly discharged.
6. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
7. Intermittent short circuit due to damaged wire insulation.
8. Intake air leak.
9. Water, dirt, or rust in the fuel system, fuel pump and/or filter.
10. Faulty fuel pressure regulator
11. Fuel tank vent system plugged.
12. Throttle body controls misadjusted.
13. Damaged throttle body or intake seals.
14. Loose, dirty, or corroded ignition module connector at crankcase.
15. Faulty MAP, CKP, O2, and/or CMP sensors.
16. Incorrect valve timing.
17. Weak or broken valve springs.
18. Damaged intake or exhaust valve.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
Running rough and backfiring Vulcan Bagger Forums
Vulcan 1500 backfire popping and cracking pipe problem LocalRiders com
http://www2.vulcanrider.se/DL/00-08ka-smcvulcan1500classicfi-s.pdf

May 24, 2016 | kawasaki Motorcycles

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Why is my kawasakivn1500backfireing


Backfiring is a sign that you have an air leak somewhere. Check the vacuum lines on the throttle body, they become old and crack.

May 29, 2014 | 1996 kawasaki VN 1500 Vulcan Classic

1 Answer

Where is the fuel filter located for a 2001 kawasaki vulcan 1500 classic


Where is the throttle body throats on a kawasaki vulcan 1500 Fi

The solution is simple. Clean the carbon ring out of the throttle body throats using your choice of scrubber (old toothbrush, Q-Tip etc) and some carb/throttle body cleaner. Hold your throttle all the way open or use your throttle lock to do it while you scrub the ring away. Now, ladies and gentlemen, start your engines! And enjoy a nice smooth idle again. BTW if you turned the idle up so the engine would run you'll probably find it's now idling way too fast. Crank it back down to the recommended 950 (or whatever your owners manual recommends).

Mar 17, 2013 | 2001 kawasaki VN 1500 Vulcan Classic

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1997 kawaski vn 1500 Vulcan classic d raw fuel down needle value of carb


sounds like carb, is airfilter set up ok, it can act as an air restrictor to match the jetting

Feb 16, 2013 | 1999 kawasaki VN 1500 Vulcan Classic

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My friends Vulcan is backfiring thru the carb. Any ideas on what may cause this problem?


Check out the inlet tappet clearance as they could be to tight OR
A burnt out inlet valve seat having a slight burn trace or a Cracked seat OR the timing is out of wack by 1 or 2 mm.
Once you have check out the above and fixed the problem you will be riding high . Ron

Nov 11, 2009 | 2000 kawasaki VN 1500 Vulcan Classic

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