Question about Craftsman 42 in. Deck 19.5hp Lawn Tractor

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Backfires,but getting fire and fuel - Craftsman 42 in. Deck 19.5hp Lawn Tractor

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Check the spark plugs & make shure you use the fuel stabalizer in gas it help keep the carbon off of valves & helps keep the carb clean

Posted on Jun 08, 2009

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I have 03 kawasaki praire 650 v-twin its backfiring through front carb and wont run whats wrong


Backfiring through a carb is indicative of over advanced ignition. The spark is firing the fuel too early and exploding through the carburettor, instead of firing the piston over Top Dead Centre (TDC).

Another possibility is a damaged valve, do a compression test and get the timing checked.

Jan 02, 2016 | kawasaki Motorcycles

1 Answer

Why Is My Harley Davidson EVO Backfiring on the Rear Cylinder?


Harley-Davidson EVO may be backfiring on the rear cylinder because it has a wasted spark system. If fuel and electrical is all good/correct it is often the case in these symptoms that motor cycle spark plugs that although looking good and firing outside of the engine are breaking down and will not fire under compression pressures on a power stroke but will fire unburned fuel on the unpressurized exhaust stroke when the plug again fires in a wasted spark ignition system and when so firing the result is a backfire, usually quite loud.

Sep 08, 2014 | 1993 Harley Davidson FLSTF Fat boy

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2001 1200 sportster cranks and backfires, carb and fuel good, could it be crank sensor?


Wasted spark system. If fuel and electrical is all good/correct it is often the case in these symptoms that motor cycle spark plugs that although looking good and firing outside of the engine are breaking down and will not fire under compression pressures on a power stroke but will fire unburned fuel on the unpressurized exhaust stroke when the plug again fires in a wasted spark ignition system and when so firing the result is a backfire, usually quite loud.

Jul 23, 2014 | 2001 Harley Davidson XL 1200 C Sportster...

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Backfires starting


Backfiring is caused by a build up of un-burnt fuel in the exhaust which is then ignited by the hot gases causing an explosion. Excess fuel could be caused by a number of factors, 1. timing is out. 2. plugs not firing correctly. 3. carb or fuel injection settings are wrong. Generally back firing is caused by un-burnt fuel so you need to find out why this is happening.
Hope that helps

Jan 14, 2014 | kawasaki KMX 125 Motorcycles

1 Answer

Engine won't start getting fuel and fire crank but won't start it wants to backfire


Try posting this question under mowers. This is the measurement tools category.

Aug 27, 2012 | Briggs & Stratton Briggs Stratton Intek V...

1 Answer

Car is backfiring like no gas it has fuel injection


most times-a backfire is caused by being slightly out of time or bad valves--not sure of your year make or model of car. Sometimes the timing will jump and cause the firing order to be wrong and you'll get a backfire and the car will run ruff

Apr 26, 2012 | Delphi Fuel Pump Mercury Sable 97...

2 Answers

Car had been running fine, backfired once and lost a little power momentarily. Parked 24 hours,started right up but backfired and died. Now starts easily but dies without intense pressure on gas pedal.


Sounds like it's fouled a spark plug this happens as the plug wires fail and the power goes to ground instead of firing the fuel. The timing belt could have skipped time but the engine may run smooly but have very little power.65158335.jpgThe plug wires will act like what you say too.340881376.jpgThe boots get electrcal holes in them and they fire to the head instead of the fuel mixture and then it fires sometimes and throws everything of and they run very badly or not at all.

Feb 24, 2011 | 1999 Ford Escort

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Has firing but wont start


check if its getting fuel and air, you need All 3 to make it run, if you have all of that (and going on the its firing concept) all that need to happen is fuel goes to carb, intake turns it to vapor, spark plug fires and ignites the fuel vapor and that causes the piston to go, so if its firing and all the above are good you should check the points and condensor, it should turn over for a few seconds and backfire if its not backfiring its likely not getting fuel, try to spray some ether(quik start or just some gas directly into the carb to see if anything hapens, You may need to take it to a shop or have friend with some mechanical background help ya. good luck Rotticus,
p.s. in the future be more specific and we can try to get more details for you, also google the bikes make and model and you should find some schimatics.

May 02, 2009 | 1981 Yamaha XJ 650

1 Answer

Backfiring


Back firing, or after firing is usaully caused by an exhaust leak. Check around your header flanges for leaking.

Mar 05, 2009 | 2005 Hyosung GT 125

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