Question about 1996 kawasaki VN 1500 Vulcan Classic

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I have a 93 vulcan 1500 that backfires thru the exhaust when you let off the gas. What can cause this?

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You have stock exhaust? If not, that's your cause.

Posted on Jun 01, 2010


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1 Answer

Engine starts then backfires and sometimes leaks gas on exhaust

IS it leaking gas on the exhaust or thru the exhaust. I have seen the float in the carb stick in the down or fill position and flood thru the exhaust.

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Hot water heater is backfiring thru the exhaust vent and you can smell gas out on the street. Any suggestions?

If we are talking a hot water heater in a house, the only thing that I can think of that could cause backfiring through the exhaust vent is that the gas control valve is letting gas through, although the thermocoupler and thermostat are not both satisfied.

Sometimes this is a dirty thermocoupler, but most of the time, it is a defective gas control valve.

Jul 11, 2011 | Kitchen Ranges

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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

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

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

Jul 07, 2010 | 2000 kawasaki VN 1500 Vulcan Classic

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

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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