OK, this little engine has me stumped!

It’s a Tecumsen model LV195EA, and stalls after it has been running at high speed under load (pressure washing things) for a few minutes. Now, it does not do it all the time, I guess it depends on what day…LOL.

After a stall, it fires right back up after you prime the bulb once. It will continue to run if you keep priming the bulb. It will also idle w/o priming. So basically, it’s starving on fuel. But why is this only intermittent? It runs great otherwise.

Oil is clean and full
New plug
Carb is clean
Made sure fuel cap is venting (loosened after stall)


Possible other things to check are vacuum leaks. Wouldn’t a vacuum leak always be there? Valve lash? Primer bulb damaged?

Let me know your thoughts.

You may want to take a look at the O-Ring seals on the nozzle, they could be deteriorated and not making a consistent seal, causing an intermittent loss of fuel.

Best of Luck... :thumbsup:

You may want to take a look at the O-Ring seals on the nozzle, they could be deteriorated and not making a consistent seal, causing an intermittent loss of fuel.

Best of Luck... :thumbsup:

Ok. I'll try a carb rebuilt and a new primer bulb. Thanks:)

As a note make sure the bolts holding the air filter houseing to the mouth of the carb are reinstalled or it wont prime and will leave you wondering for an hour what you did wrong i did that myself :)

Thanks for the tip.

Here is a pic of the engine:

http://www.psep.biz/images/2007%20UPDATES/LV195EA-362071.jpg

You may want to take a look at the O-Ring seals on the nozzle, they could be deteriorated and not making a consistent seal, causing an intermittent loss of fuel.

Best of Luck... :thumbsup:

I concur with 30year. Will add that sometimes the screen in the tank gets restricted, and in effect becomes the ultimate fuel delivery control if gas can't get to the carb. in enough volume.
Paul

Where can I find the procedure and specs for valve lash adjustment?

I found the manual in the sticky, however does not mention specs or procedure :confused:

I agree with everyone and would suggest checking the fuel cap, it has a bell shaped disc that sometimes comes loose in the tank and blocks the fuel outlet. Have a good one. Geo

I agree with everyone and would suggest checking the fuel cap, it has a bell shaped disc that sometimes comes loose in the tank and blocks the fuel outlet. Have a good one. Geo

I've tried running it w/o the fuel cap off, and problem still occurs. So it is venting properly.

I've tried running it w/o the fuel cap off, and problem still occurs. So it is venting properly.

But is the metal disk still attached to the fuel cap? Have a good one. Geo

http://i190.photobucket.com/albums/z120/geogrubb/Picture-2.jpg

But is the metal disk still attached to the fuel cap? Have a good one. Geo

http://i190.photobucket.com/albums/z120/geogrubb/Picture-2.jpg

I don't know, and will check. Thanks.

Finally fixed it.

Valve lash came in at .007”, so I left it.

Here is what I found wrong:

1. Dirty filter screen in fuel tank. Only flowed “sometimes” when tested with water. Gave it a good cleaning and flows “all the time.”
2. Tank was not venting. I found the little rubber/foam thing that belongs on the cap in the tank. I guess it might have vented a bit depending how tight the cap was.
3. Float was half full of fuel. Probably did not cause symptoms, but replaced anyway.
4. Very small scrud in carb. Also probably did not cause symptoms, but cleaned it well.
5. Primer bulb was dryrotted and looked questionable. Replaced it.

Runs like a champ now. Probably 1 & 2 were the major problem.