16 h.p. Briggs

[RedWolf]

Hey guys.I have a :confused: .What would cause a single cylinder 16 hp briggs to back fire as it runs? It has the magtron coil instead of points.It runs but it sputters and backfires.I checked the flywheel key and it was fine.I cleaned and rebuilt the carb.Could it be the coil?

[Restrorob]

This is where a in-line spark tester would come in handy to check for intermittent spark while running, But sounds like it could be a exhaust valve not closing also.

[khouse]

i agree with restrorob about the valve. could be burnt or sticking. or as simple as you bouncing up and down on the seat activating the safety switch.

[RedWolf]

Its on a old three wheeled yazoo. so no safty on the seat. I will check the valve.How often do the magtron coils crap out?

[khouse]

it has been my experience that the magnetron either works or doesn't. always exceptions to the rules.

[Restrorob]

WOOOOO NELLY.....Is this a 326400 16hp cast iron block single cylinder ?

If it is the magnetron ignition will NOT work on this engine, The timing is different on these old singles and it will NOT run right.
You must do away with the magnetron and go back to the points to get it running properly....

[RedWolf]

here are the numbers off the motor 326437 0318-01 7906201. It is a cast iron block one banger.The coil doesnt look like a magantron. But it dont have the point wires running to the coil.

[Restrorob]

If there are no wires from the points to the coil you will need to hook them back up. But I need to know which style coil you have on there before you do so.

[RedWolf]

Yes it does

[RedWolf]

Yes its on the coil

[Restrorob]

OK, You need to remove the magnetron from the coil then run a 16 gage wire from the points to the shortened wire on the coil along with the kill switch wire. The points should be adjusted to .020" and is done by loosening the adjuster screw locking nut, Adjust then re-tighten the lock nut. Re-check point gap after tightening the lock nut because it will change the gap in most cases.

[RedWolf]

Hey Rob. Why would anyone put that on there? One last thing. would you have a break down of the motor? It smokes abit and since im having to mess with the coil I might as well fix evey thing. Would you have the part number for the contacts and condencer for this motor?

[Restrorob]

Hey Rob. Why would anyone put that on there?


Because they didn't know any better, They thought they were updating the ignition system by doing away with the points but as the parts break-down below shows it will not work on engines older than 1981. The first two digits of the code number is the year the engine was built so yours is a 1979.


http://www.briggsandstratton.com/ipl/pdfs/100/MS6179.pdf

[RedWolf]

thanks Rob.I hooked the points back up and she runs great. Thanks bud.

[Restrorob]

Nadda Problem Dude :cool: