[Chipmaker]

My 8 hp cast iron sleeve XL/C Tec. engine seems like the governor is inoperative. It gives no input to the carb.

It only wants to run wide open and above governed speed. If I manually hold it down in throttle position it will start to sputter and backfire, and blow flames out the muffler. I checked the key and its fine. I noticed it was really starting to blow blue smoke both out of the exhaust, and lots of pressure comming out of the breather vent. I pulled of the crankcase breather assembly and rotated the engine over by hand. One thing I noticed is that the exhaust valve will go slightly to the open positon just a tiny bit when the both valves should be totally closed and its on the compression stroke. So I rotate the motor, and get intake valve to open , once it is fully down, both valves should remain closed until after the compression stroke, right, well the exhaust seems to open a tad and then close, and further rotation of the flywheel it will then go fully open and the close like its supposed to. I have never seen a valve just inch up a tad between strokes and close and then open. Could it be something in ther timing or cam that is related since I have what I think is a governor problem, and doe sit not work off the cam?

I am not all that famailar with a Tec, as I have never been to fond of them. Any help is appreciated.

When you run it at full throttle other than a ppopping and backfiring it seems to run ok.

Thanks

 

[Ingersoll444]

Sounds like the carb to me. Old gas in it? My snowblowers do the same thing, carbs plugged.

 

[Rodster]

That sounds like the compression release is working. Not being
familiar with your model I can't tell you more details on it. On the flathead models some had a centrifugal type to retract it when started and some used a small bump on the cam.
Rodster

 

[Chipmaker]

Gas is fresh, no crud or debris in the float bowl. Would a screwed up carb affect the governors operation? This motor was running fine for a few weeks now, and it just started acting up like I described earlier.

 

[Ingersoll444]

Originally posted by Chipmaker
Gas is fresh, no crud or debris in the float bowl. Would a screwed up carb affect the governors operation? This motor was running fine for a few weeks now, and it just started acting up like I described earlier.

It could make it seem like it's the governor, where as it is realy the carb surging.


If it has been running fine, and just did this out of the blue it is probably not the carb though. Unless????? It did not start right after a fill up did it? I fought a running problem with one of my Ingersoll's. I had forgot I filled it up a few min before it started acting up. Ended up being water in the gas.

 

[Chipmaker]

No, it started to act up about midway through a job and about 45 minutes run time. I have a feeling the governor is actually the problem. It seems to be very very stiff, and does ot make any attempt top control ther carb when the motor is running. I think the popping is from the motor running higher than its design rpm.

Anyone know how to check a governor out or is total dissassembly of the side onthe engine required to check for broken parts (plastic etc)?

I filter all my gas even when refilling, and use a fine micron strainer screen, which is pretty good at catching any water or tny stuff.

 

[Ingersoll444]

Well, sounds like you are fine with the gas. I don;t know how to set the gov, but do know that you can download the repair manual from the Tecumseh web site. I found that out wile fighting with my two snowking motors.

 

[Rodster]

HI
I think Ingersoll may have it. If the engine is not running good enough to get up to the governed RPM The governor will hold the
throttle in the wide open position untill it gets up to the correct RPM. Without a tachometer it is sometimes hard to tell. I would try to get it running smooth before tearing into the governor. It is hard to help you with the running problem without hearing it as there are a few different things it could be.
I would check your spark and change plug just to eliminate it. Then go from there.
Rodster

 

[Jay_NJ]

My understanding is the governor mechanism isn’t that difficult to repair / replace. My neighbor has a roto-tiller with the same type of problem. It was geared as such where we could get enough powder out of it by turning up the idle screw to run at “normal” RPM’s. When she ran uncontrolled, there was a lot of blow out from the breather and the carb needed constant tweaking. I’ll say this, even running flat out as it did (the neighbor ran it that way for a while not having a clue that the condition was abnormal) she stayed together – they’re sure built!

Attached is the Tecumseh Handbook in pdf format. It’s a keeper for whatever ails your “engine.”

Jay

---------------------

OK – slight problem here. First off, I forgot to attach the file – thus my post without the attachment.

When I tried to upload the file, I got the following message:

“You have attempted to upload an invalid type of attachment. The
valid extensions for attachments are: gif jpg png txt zip bmp jpeg”

So, I renamed the file to “Tecumseh Handbook.pdf.zip” and got the following message:

"The file that you have tried to attach is too big. The maximum size
is 1048576 bytes."

The PDF file is 2.5 meg. Sorry about that – I’ve got the file – if Andy can fix the problem on his end, I’d be more than happy to attempt another upload.

 

[Rodster]

2.5 MEG is huge. The poor dialup members would have time to make lunch and eat it before it downloaded. Might be better to just post the link for those who want it.
Rodsteroutta here

 

[leolav]

Check the govenor springs. One might be stretched or caught up on something and can really cause alot of headaches. I had to replace one last spring.

 

[Jay_NJ]

Rodster,

I’d love to post the link, but I have no idea where it came from – I just have the file.
Besides, 2.5 meg isn’t that bad over dialup… can’t be more than 10~15 minutes to download.

Like I said, if Andy can “relax” his restrictions, I’d be more than happy to upload.

I’ll email it anyone that wants it – just send me a personal message with your email address, (don’t email me through the forum – it doesn’t work).

Jay