On Apr 3, 11:05�am, ransley wrote:
On Apr 3, 5:31�am, "Hustlin' Hank" wrote:



I doubt it has anything to do with fuel delivery. I would look at the
safety switches first. They get dirty, ground out, and they also wear
out.

To check them: There should be one wire coming from the motors coil,
then it splits into different areas that go to the different switches.
If you disconnect the main wire, that will disable all the safety
switches. Then run it to see if the problem still exists. If it does,
then it is NOT the safety switches.

Diagnosing the problem will take a systematic approach. Rule-out each
system until you find the system (fuel, electrical, compression and
etc.) that is faulty.

Hank

The question is why after 20 minutes, safteys should be almost
immediate, fuel should be an issue within maybe 5 minutes as thats
about the max for a float bowl to hold and the choke is not needed,
unless its not venting the tank so as to not feed fuel. �My Lawnboy
did this one year, first it would not restart hot, following year it
died after getting hot, the following year it would not start at all,
it was the ignition module, Once I bought a used boat motor, no wonder
the guy selling it only gave me a 5 minute test ride, after 15 minutes
one cilinder would stop firing, only an expensive new ignition module
fixed it. �Coils going bad can also fail when fully heated up. �I
think a first test is a spark strength and color check just after it
dies, and when cold. My lawnboy still sparked, but this test is faulty
since under compression and with fuel in the cilinder it takes much
more voltage than in open air. Another indicator ive noticed on
several small motors, and my car, with failing ignition components is
ok idle, and rough running under load.-

Well, it could be any of the systems. Disconnecting the ground wire is
eliminating one potential problem within 1 minute. By isolating
different systems, you can rule-out those systems. Ground wires come
loose, get worn, switches wear out and etc.

No matter what, it will take time, effort and a systematic approach to
diagnose his problem. The Gas cap vent is a good start too. Quick and
easy.

Hank