Backfiring Briggs and Stratton Lawnmower - Help!

Our 10 year old lawn mower backfires when we try to fire her up. we have changed the gas line and the spark plugs, but still no joy. Any Ideas anyone?

have you cleaned the carb or anything. does it kickback when trying to start.

theirs a rubber diafram fuel pump either between carb and fuel tank (with rubber three pumps button).on older models diafram mounted on side behind rectangluar plate.also briggs engine are noted for sticking valves remove head pull crank see if valves opening and closeing.solid state ignition module will also cause this problem (if applies)

SO WHAT IS YOU PIONT STICKING FOOLISH LINKS BETWEEN MY ANSWERS TRYING TO HELP FOOL.LOOKS LIKE YOUR AN IDIOT.IF YOU CAN NOT DO BETTER FORGET IT.

HOBBIST wrote:

SO WHAT IS YOU PIONT STICKING FOOLISH LINKS BETWEEN MY ANSWERS TRYING TO HELP FOOL.LOOKS LIKE YOUR AN IDIOT.IF YOU CAN NOT DO BETTER FORGET IT.

what the hell is your problem. im not the one doing the editing with the links. keep abusing the mods and i will have a admin ban you ip address.

sorry i was aiming at the spamer.i which i didnt get involve know.i am 62 computor was before my time sometimes my message ends up in the wrong place.was not aim at lexmark567 sorry again for the mistake

hobbist wrote:

sorry i was aiming at the spamer.i which i didnt get involve know.i am 62 computor was before my time sometimes my message ends up in the wrong place.was not aim at lexmark567 sorry again for the mistake

well i don't see the spammer so one of the admins must have got it. are you suggesting that a guest is logging in here under your name and posting spam.

i went to answer briggs question i used reply. i do not know if they log in or not that way.just suggesting that maybe have reply and new topic might be hidden until they register with a user name and pass word. aol uses a spam folder, so spam goes to a spam folder. allows you to open every three days.if open it does not effect rest of the computor software. only in that folder you can move it if you want to keep.something along that line for security???

swhouston: happen been on line when i reported the spam or trying to piss off spamer.i use microsoft m.e. and it does not take much to interupt M.E. software.so again sorry for the mistake i was not aiming at lexmark567.

p.s.
i had to reformat reinstall M.E again.