jamiedolan

niper99 wrote:

HI
Thanks for your response.  From what I can tell, the machine was working properly for a while last summer after the carb / plug where replaced.  However then last summer, I damaged the deck, and once the deck was fixed and back on this year and I went to use it, this problem developed.  I did not have this problem in the fall when I was mowing.

I ran the tractor around early this spring without the deck on it, and it seemed like it was working well then also.  So I am not positive if this just developed over time or if this is something that happened right after we tried to mow some grass under heavy load.  If that is the case, then I wonder if I damaged a head gasket or something similar? 

Thanks
Jamie

HI;

I have a Murray with a 17hp OHV Tecumseh on it.  It is about 10 years old, but only has 50 to 75 hours on it.  The carb was replaced less than 10 hours ago.  There is clean fuel in it, and there is a clean fuel filter in line.  Spark plug is about 10 hours old, and is on my list to replace.  Air Filter is clean.

The mower will run, and at times, it will run very well for a minute or two, cutting heavy grass with what seems like little effort.  Then it will just die, most of the time no sputter, the engine is just off.  I disengage the deck, and it always restarts.
Then I try again, sometimes it will run again for a few minutes with load, other times, it wont even drive up a mild incline with the blade off, without dieing.  I stop and it always restarts.  This same things happens when the engine is cool or if I have been going though this whole starting stopping thing for 3 hours, so it seems unrelated to engine temperature.

I read many post with suggestions on what to try if a engine just loses power, but the thing that is weird is that this will run with Full power for a minute or two, then it dies.  Then the next time I start it, it will kind of chug along, and eventually die, then the next time, it will run with full power again.  I have losened the gas cap.  It idles fine with no load applied.

I tried to watch the governer arm while I am driving it when it dies, and it doesn't look like it even attempts to adjust the engines power before it dies.  Many times it is dieing with very very low load, and even had died when the blades are off.

The service shops that I would take it to are 2 weeks+ backed up, and we have 3.5 acres that is growing.  My dad has worked on old jeep motors quite a bit from the 1940's and 1950's, but has not worked much with smaller engines like this one, and we are not quite sure what could be causing a problem like this.

Does anyone have any suggestions as to where we might want to start?

Thanks So Much
Jamie