Briggs 16hp twin won't fire

[farm boy00]

My Briggs and Stratton 16hp twin cylinder industrial engine won't fire. I parked it last fall with a bad coil. Just replaced the coil the spark plugs and now it won't fire. It don't even act like it's firing. Any ideas???



Attached are the info for the motor

 

[farm boy00]

I have dumped gas down the carb. I have tested for spark and got it

 

[JRobyn]

Does it seem to have normal compression? If you have spark (at the correct TIME) and you've at least force-fed it some fuel, you should get SOMETHING. Just how much fuel did you dump in? If it was enough to completely wet the spark plug, consider it flooded. Try maybe a teaspoon full or less, or a squirt of ether and let us know what it does.

- Jay

 

[farm boy00]

Does it seem to have normal compression? If you have spark (at the correct TIME) and you've at least force-fed it some fuel, you should get SOMETHING. Just how much fuel did you dump in? If it was enough to completely wet the spark plug, consider it flooded. Try maybe a teaspoon full or less, or a squirt of ether and let us know what it does.

- Jay

We couldnt even get it to flood out. We purposely tryed too and couldnt flood it

 

[jimmysisson]

What were the symptoms last fall? Why the bad-coil diagnosis? Do you have good compression?
Jim

 

[bjr]

Sheared flywheel Key? bjr

 

[TJP89]

Sheared flywheel Key? bjr

That's what it sounds like to me.

 

[crazyal]

How did you determine that you had a bad coil? Are you sure you have the plug wires on the correctly?

 

[Mysfyt]

If the magnets in the flywheel are rusty, clean them with sandpaper. It will make a difference.

 

[farm boy00]

I determined the bad coil because it would run for a min quite cool down repeat.

There is a little rust on the fly wheel. I'll clean it up

 

[farm boy00]

Got the fly wheel cleaned up. But there is a wire running up from the motor by the oil dipstick. Any ideas that that could cause the







problems??

 

[Walt 2002]

Cleaning a rusty mag coil/magnet makes one feel good but a little rust on those components have no affect on magnetic flux. It is really helpful if you post engine model numbers. ASSUMING you may have a flathead opposed twin, 40 series engine, are you sure you installed the coil correctly? Plug wires exit coil heading towards the back of engine, double back in opposite direction coming out then on carb side of engine where plugs are.

Walt Conner

 

[farm boy00]

Cleaning a rusty mag coil/magnet makes one feel good but a little rust on those components have no affect on magnetic flux. It is really helpful if you post engine model numbers. ASSUMING you may have a flathead opposed twin, 40 series engine, are you sure you installed the coil correctly? Plug wires exit coil heading towards the back of engine, double back in opposite direction coming out then on carb side of engine where plugs are.

Walt Conner

Yes i do have that style. Sorry about not positing earlier



Can you explain what you mean a little more. I did the the shorter spark plug wire to the closer plug

 

[bindian]

That wire, if it runs under the flywheel is the generator wire with a diode in it. Sounds like your coil is grounding out. When I overhauled my Dad's 16 hp B&S twin in his Gilson, I ripped the coil out and put in electronic ignition.
hugs, Brandi

 

[farm boy00]

That wire, if it runs under the flywheel is the generator wire with a diode in it. Sounds like your coil is grounding out. When I overhauled my Dad's 16 hp B&S twin in his Gilson, I ripped the coil out and put in electronic ignition.
hugs, Brandi

Can you go into more detail about the wire and the coil grounding out

 

[bindian]

Can you go into more detail about the wire and the coil grounding out

You should have a wire from under the flywheel to the coil. Find that wire and see if it is grounding out. If I remember right............that wire goes to the switch to kill the engine. Also, after watching this Youtube video here......https://www.youtube.com/watch?v=PfRP4QW2ppE I remember the air gap on the coil is important. Very important. Did you check your points and their gap. This link might help..........Replacing the ignition
If you got to remove the flywheel.............they can be stuborn. I bent/broke a couple of pulley pullers on it. I finally bought a B&S twin flywheel puller. Even then it took a lot of pounding on the edge of the flywheel.
hugs, Brandi

 

[bindian]

Oh yeah...that wire should run from the coil to the condenser. When I was younger, my brother and I would sometimes pinch the wire with the cover to the condenser at the points on our mini bike engines.
Electronic ignition would do away with the points and condenser.
hugs, Brandi

 

[farm boy00]

Oh yeah...that wire should run from the coil to the condenser. When I was younger, my brother and I would sometimes pinch the wire with the cover to the condenser at the points on our mini bike engines.
Electronic ignition would do away with the points and condenser.
hugs, Brandi

It's a electric sssooo I'm guessing that's just there for nothing then

 

[bindian]

It's a electric sssooo I'm guessing that's just there for nothing then

Find where that wire goes. Check to see if it is grounded. If it is, that might be your problem. It would be grounding out the spark. It's really hard to trouble shoot something you can touch while a 1000 miles away.
hugs, Brandi

 

[farm boy00]

Find where that wire goes. Check to see if it is grounded. If it is, that might be your problem. It would be grounding out the spark. It's really hard to trouble shoot something you can touch while a 1000 miles away.
hugs, Brandi

I tried yup check but i can't find the end cause it goes behind the flywheel