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Honda gx340

1994ch said:
There was an old cartoon in our paper one time.......Two guys were working on a chain saw, one said to the other "If we worked as hard at clearing trees as we are at starting this chain saw we would have a hundred acres cleared"

What you need to do is hook that pull rope up to the input shaft on the generator and forget about the stupid engine.
Click to expand...

I know, I saw it right away too...no safety glasses, hearing protection, and I caught something else that is really important...he's no gloves on.

StartTheSaw.jpg
 
Do you have a timing light? If so, make a tdc pointer for the flywheel and rig up the timing light so you can find when it's firing. Also, does this engine use an ignition module? Many Honda's use the all in one coil, but the kill switch lead will tie into a small metal module normally near the kill switch. The ones I've seen are normally about 1 inch square and about 3/8" thick. It will have 1 lead going out and hook to the kill wire, and the module atatches to the block via a metal mounting tab. You can have spark all day, but if it has that ignition module, it controls the actual timing, and when it goes the timing goes all over the place. I've had this happen to my honda eu3000is generator. Everybody told me it needed an inverter, but it ended up being the $60 ignition module. I've also had a few fail on Kawasaki's with the same system. They all had spark, would run fine cold, but all showed there colors starting up hot. It's worth checking to see if it has one.
 
Hmm funny you should mention that. It does have a little square metal box like that. It ties into the wire going to the low oil sensor. It's not on any parts diagram I could find. It appears to have a diode in it as it will ohm one way but not the other. How does that affect the timing? Other engines I read about had what they called an igniter, same part?
 
Yes, many call it an ignitor. It varies the timing by rpm's as I see many of these engines have an idle down feature on them. You will still get spark for a few times without it, but it quickly dies off. Learned about them working on kawasaki mower engines. Had to hook up a timing light to finally chase down what was happening. I thought it was just a capacitor so it didn't burn up the cutoff switch, but learned it controls the actual spark. Then I had my honda where it would run great for 10 minutes, then start popping, and shut off. All the shops said I was wasting my time replacing it, but that was about 10 years ago, and it's still going. They don't fail often, but when they do, they can make you pull your hair out.
 
So here's some pics of the box. I can't find anything about it online. I originally thought it was a Motorola logo but after some searching it could be MatsushitaIMG_20170723_180759.jpg IMG_20170723_180809.jpg IMG_20170723_180819.jpg
 
Looks like the official name is a Pulser Coil (or trigger unit) for an overly complicated CDI ignition vs. the old school KISS B&S engines. Apparently one way to test it is to mark the flywheel and install it 180 degrees off. If the engine runs the Pulser is bad. They can fire 180 degrees off somehow when failed. You already know it's iffy because of replacing everything but.

Not sure if this is the correct one:
http://www.boats.net/parts/detail/honda/H-30410-ZE3-003.html
 
Looks like the same controller kawasaki uses. I know they fail quite often on the older kawasaki's, but don't hear of many honda's failing. I know I lost the one in my eu3000is, and it did all kinds of stuff. Would run cold, but after it ran 10 minutes, it would start popping, and normally shut off. Always gave me spark, just wasn't at the right time. Sometimes it would stay running, but forget restarting it until it sat overnight. $63 and here it is still going 10 years later after the honda shop said it needed a $900 inverter to fix it.
 
this thing doesn't touch any moving parts, it simply bolts to the outside of the block. Nowhere near the flywheel
 
yes it was confirmed just a few minutes ago that it is indeed a diode that has something to do with the low oil shut down.
 
So I got it figured out and once again I'm my own worst enemy. Turns out I put the coil on backwards. You'd have thought it would have been marked so as to alleviate any confusion.
 
Talked to a guy at a local shop and he called his Honda tech guy. As far as timing being off it was the only thing I hadn't triple checked. Still find it hard to believe it's not marked somehow.
 
Sounds like putting the cover/cap on a Hydro-gear hyd pump on backward.. fit nice.. will not work though, note on instructions: mark orientation before removing. LOL Glad you figured it out too, sorry you can't get all those hours back though.
 
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