416h Onan p216 lost spark

[Jhook 849]

I mow a 3 acre lot with my 416h for side work. While mowing this past weeked about 1 hour in the engine shot a large flame out of the exhaust and died, hasn't ran since. Ive come to the conclusion that it lost spark after checking all fuses, and using an inline spark tester. Did several of the suggested tests from the onan thread. I ran a jumper wire from postive on battery to postive on coil, no help. Ive tested the coil with an ohm meter and it tested 3.6 which is within spec. Im planning to tear into it a little more today and looking for suggestions on where to look next. If i cant figure it out soon or it isnt an easy enough fix i will have to drop the tractor off at the dealership to be fixed there $$  thanks in advance. Any input appreciated. Engine is onan P216G and its a 1995 416h with 926ish hours. 

[JoeM 8,100]

Onan_P216-18-20_24-PowerPlus_SM.pdf

Edited May 25, 2021 by JoeM

[JoeM 8,100]

I think it is section 8 might be the ignition module. 

 

[Handy Don 13,586]

[Jhook 849]

5 hours ago, JoeM said:

Onan_P216-18-20_24-PowerPlus_SM.pdf 1.42 MB · 0 downloads

Does the fly wheel need to be removed to replace that? Or is it an easy fix? I know the part is about 300 bucks

 

[JoeM 8,100]

42 minutes ago, Jhook said:

Does the fly wheel need to be removed to replace that

Yes the flywheel has to come off. 

I have seen them on evil bay for $100 or so. Might get a used one cheaper maybe A-Z ???

 

[Jhook 849]

1 hour ago, JoeM said:

Yes the flywheel has to come off. 

I have seen them on evil bay for $100 or so. Might get a used one cheaper maybe A-Z ???

 

I was betting on that being the culprit but figured id see if anyone had any last minute ideas before i tear into it. Will pull the flywheel cover and intake and everything this weekend. Clean all electronics and remove all dust and debris from the engine and check for spark again before the flywheel comes off. 

[horseyheaven 113]

Onanparts.com has the ignition module for $179.99 that is genuine Onan.

[lynnmor 7,673]

The module can become heat sensitive, so try again with the engine cold.  That isn’t a positive test, but adds to the case against the module.

[Bill D 2,188]

Jack's Small engine has the module for $99.  Bill

[johnnymag3 2,561]

16 HP single cyl. Kohler sounds like a far better repair to me !!!   JMy .02 cents...

[Tuneup 1,442]

Not much to it, right? coil and module. You jumped 12V to the coil so the tractor's circuitry is out of the equation. Onan provides good guidance so the choice made in light of that guidance is probably the right one. Buy the module and move ahead. Love that engine - I can't help it. So much torque. My 516 is a good friend.

[Jhook 849]

On 5/26/2021 at 12:32 PM, Bill D said:

Jack's Small engine has the module for $99.  Bill

Can you give me a link? Couldnt find it

[Jhook 849]

On 5/26/2021 at 3:43 AM, horseyheaven said:

Onanparts.com has the ignition module for $179.99 that is genuine Onan.

Whats the proper part number i was having trouble with that 

[lynnmor 7,673]

19 minutes ago, Jhook said:

Whats the proper part number i was having trouble with that 

One source there are more.

[Bill D 2,188]

1 hour ago, Jhook said:

Can you give me a link? Couldnt find it

I just searched Onan P216 ignition module on Google and it came up. Jack's had it listed as Onan ignition control.  PN 1660785 is $110.95. They also have a PN 1660821 for $99.95.  I believe you need the 0785.  What does the 0821 fit?   It looks the same.  Bill

Edited May 28, 2021 by Bill D

[Jhook 849]

On 5/27/2021 at 9:08 PM, Bill D said:

I just searched Onan P216 ignition module on Google and it came up. Jack's had it listed as Onan ignition control.  PN 1660785 is $110.95. They also have a PN 1660821 for $99.95.  I believe you need the 0785.  What does the 0821 fit?   It looks the same.  Bill

Thats what i was confused by the 2 different parts. Also wasnt sure if the onan 20hp and 18hp and 16hp all use the same one

[Jhook 849]

Making some progress today. What a mess

[Tuneup 1,442]

A bit of pressure washing appears to be in your near future.

[Handy Don 13,586]

12 hours ago, Jhook said:

Making some progress today. What a mess

 

Golly, is there an engine under all that oily dirt?

[Jhook 849]

1 hour ago, Handy Don said:

Golly, is there an engine under all that oily dirt?

Theres gotta be one in there somewhere. I used this tractor last week😂

[Jhook 849]

Also is it safe to pressure wash everything shown? Obviously avoiding the carb, and not spraying directly onto electrical components, but as far as getting everything a little wet will it be fine? I plan to do the stator and whatever else is recommended for replacement while its apart

[Handy Don 13,586]

19 minutes ago, Jhook said:

Also is it safe to pressure wash everything shown? Obviously avoiding the carb, and not spraying directly onto electrical components, but as far as getting everything a little wet will it be fine? I plan to do the stator and whatever else is recommended for replacement while its apart

I'm leery of pressure washing anything electrical, fuel-related, fabric, or having seals intended to keep lubes in and/or dirt out. I always worry about forcing water into some place it isn't intended to be.

 

Simple Green (or similar) applied, at concentrations higher than recommended, with a soft, long-bristle brush and then rinsed gently with a hose are my go-toos. I'll also use low-pressure air to clear tough-to-reach places and remove residual moisture.

 

That said, away from the above constraints, or when I am disassembling stuff, pressure washing and high-pressure air get the nod.

[Jhook 849]

13 minutes ago, Handy Don said:

I'm leery of pressure washing anything electrical, fuel-related, fabric, or having seals intended to keep lubes in and/or dirt out. I always worry about forcing water into some place it isn't intended to be.

 

Simple Green (or similar) applied, at concentrations higher than recommended, with a soft, long-bristle brush and then rinsed gently with a hose are my go-toos. I'll also use low-pressure air to clear tough-to-reach places and remove residual moisture.

 

That said, away from the above constraints, or when I am disassembling stuff, pressure washing and high-pressure air get the nod.

Ok. Its been soaking in simple green since last night. Going to soak it all week cause i work til sunday. Going to be installing this kit from onanparts and also a new stator, and new flywheel key. Any other recommended parts to replace while its apart? 

[Jhook 849]

I also dropped one of the three 5/16 screws that hold the air box on down the throat of the carb. So thats gotta get pulled as well. Unless i can vacuum it out. My fault for rushing of course. Everything else so far is going smoothly. This onan really makes me appreciate the simplicity and reliability of the kohler ch15s command pro thats on my 315.