Fouled Spark Plug

Fowlmeister · 11-11-2007, 11:11 AM

Ahhhh, the beautiful pacific northwest. Went out yesterday morning, if you can call 12:30 AM "morning", to hunt the goose opener. Rained the night before and while starting my 29 vanguard had a nice backfire from some water in the carb. The motor didn't run right after that and had to make a 4 mile run at about 4 mph because the motor just bogged down after the backfire. I carry and extra fuel filter so I changed it but still didn't fix the problem. Got home, removed the spark plugs and found one completely bent with no gap. Replaced both plugs and it ran like a champ again. Difficult way to learn, ALWAYS carry extra plugs and a spark plug wrench.

SMILIN JACK · 11-11-2007, 07:02 PM

Did You check for a baffle broken . The bent plug is one of the signs for a blown muffler . Hope the engine spit the metal out if the muff did break or I believe it will happen again. Check and search for Broken Muff baffles on forum . There are a lot of warnings out there. You could mess up a valve. Good luck

***Glenn*** · 11-11-2007, 07:05 PM

Get it checked quickly. The piece of metal that damaged the plug can ruin the engine. See a Briggs dealer soonest. Have them call Briggs and the service center will get repair advice.

Fowlmeister · 11-11-2007, 07:29 PM

After replacing the plugs I fired up the engine and let in run for about 10 minutes without any problems. If there was a piece of metal in there wouldn't it have caused it to foul again?

***admin-Jon*** · 11-11-2007, 07:38 PM

ANSWER THIS WHAT BENT THE GAP?
still get the engine checked

Fowlmeister · 11-23-2007, 11:53 AM

Well fellas you guys saved my life. The muffler is shot. Took the motor in and luckily no damage but can't use the motor until I get a new exhaust. Thanks for the advice. Anyone have a stock exhaust they want to get rid of?

***sandman7655*** · 11-23-2007, 04:32 PM

CONTACT MB MONDAY ,they will have one.

11-11-2007, 11:11 AM	#1 (permalink)
Fowlmeister Junior Member Join Date: Aug 2006 Location: Vancouver, WA Age: 45 Posts: 14 Thanks: 0 Thanked 0 Times in 0 Posts	Fouled Spark Plug Ahhhh, the beautiful pacific northwest. Went out yesterday morning, if you can call 12:30 AM "morning", to hunt the goose opener. Rained the night before and while starting my 29 vanguard had a nice backfire from some water in the carb. The motor didn't run right after that and had to make a 4 mile run at about 4 mph because the motor just bogged down after the backfire. I carry and extra fuel filter so I changed it but still didn't fix the problem. Got home, removed the spark plugs and found one completely bent with no gap. Replaced both plugs and it ran like a champ again. Difficult way to learn, ALWAYS carry extra plugs and a spark plug wrench.

11-11-2007, 07:02 PM	#2 (permalink)
SMILIN JACK Senior Member Join Date: Dec 2006 Location: Joppa , Md Age: 62 Posts: 1,232 Thanks: 18 Thanked 13 Times in 3 Posts	Re: Fouled Spark Plug Did You check for a baffle broken . The bent plug is one of the signs for a blown muffler . Hope the engine spit the metal out if the muff did break or I believe it will happen again. Check and search for Broken Muff baffles on forum . There are a lot of warnings out there. You could mess up a valve. Good luck __________________ Smilin Jack If You can't be a good example . Then You will have to be a Horrible Warning

11-11-2007, 07:05 PM	#3 (permalink)
*Glenn* Administrator Join Date: Feb 2006 Location: Great Salt Lake, Utah Posts: 3,116 Thanks: 4 Thanked 114 Times in 32 Posts	Re: Fouled Spark Plug Get it checked quickly. The piece of metal that damaged the plug can ruin the engine. See a Briggs dealer soonest. Have them call Briggs and the service center will get repair advice.

11-11-2007, 07:29 PM	#4 (permalink)
Fowlmeister Junior Member Join Date: Aug 2006 Location: Vancouver, WA Age: 45 Posts: 14 Thanks: 0 Thanked 0 Times in 0 Posts	Re: Fouled Spark Plug After replacing the plugs I fired up the engine and let in run for about 10 minutes without any problems. If there was a piece of metal in there wouldn't it have caused it to foul again?

11-11-2007, 07:38 PM	#5 (permalink)
*admin-Jon* Administrator Join Date: Feb 2006 Location: Watkinsville, GA Posts: 3,001 Thanks: 5 Thanked 13 Times in 6 Posts	Re: Fouled Spark Plug ANSWER THIS WHAT BENT THE GAP? still get the engine checked

11-23-2007, 11:53 AM	#6 (permalink)
Fowlmeister Junior Member Join Date: Aug 2006 Location: Vancouver, WA Age: 45 Posts: 14 Thanks: 0 Thanked 0 Times in 0 Posts	Re: Fouled Spark Plug Well fellas you guys saved my life. The muffler is shot. Took the motor in and luckily no damage but can't use the motor until I get a new exhaust. Thanks for the advice. Anyone have a stock exhaust they want to get rid of?

11-23-2007, 04:32 PM	#7 (permalink)
*sandman7655* Administrator Join Date: Mar 2006 Location: south carolina Age: 36 Posts: 3,747 Thanks: 24 Thanked 0 Times in 0 Posts	Re: Fouled Spark Plug CONTACT MB MONDAY ,they will have one. __________________ UPSTATE CAROLINA MUDBUDDY MUDBUDDY complete line BPS PERFORMANCE CERTIFIED CENTER GATORTRAX BOATS triton boats g3 boats 803-981-MUUD 803-242-1333

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