On Sun, 25 Nov 2012 20:27:10 -0500, axolotl
wrote:

On 11/25/2012 7:46 PM, wrote:
On Sat, 24 Nov 2012 20:57:02 -0800, "PrecisionmachinisT"
wrote:


"axolotl" wrote in message
...
The unit under test is a generator powered by an 8HP Briggs. I cleaned the
fuel tank, replaced the fuel lines and filter, and installed a carburetor
rebuild kit.

Engine starts and runs well for five or ten minutes, then stumbles and
stops. Starts up again with a single pull.

What should I be looking for?

Kevin Gallimore

Stuck or misadjusted float.

Blocked filter ir fuel fitting at tank? Pull the hose off and do a
fuel flow test.


Today's fooling around yields slightly different symptoms. Starts, runs
with surging, about a 10 second rep rate.

Tank cap is not clogged, loosened the cap to make sure. Fuel filter
shows fuel on both sides of the filter media.

The engine wants the choke on, indicating too lean a mixture.

The governor slams back and forth as the engine is surging, indicating
that it is moving freely.

It is certainly possible that I screwed up the carb cleaning and rebuild.

What would be a good diagnostic test for the magneto? I replaced one in
a different Briggs not long ago, but that engine simply would not go
when hot.

Check for gasket air leaks, one of the most common problems.
Don't overtorque the carb when putting it on, either. DAMHIKT.

--
Good ideas alter the power balance in relationships, that is why
good ideas are always initially resisted. Good ideas come with a
heavy burden. Which is why so few people have them. So few people
can handle it.
-- Hugh Macleod