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Posted by on May 23, 2008, 6:45 am
On May 23, 5:42 am, pheeh.z...@gmail.com wrote:
>
>
>
> > On Wed, 21 May 2008 16:00:49 -0700 (PDT), pheeh.z...@gmail.com wrote:
> > >> On May 20, 6:40 am, pheeh.z...@gmail.com wrote:
>
>
> > >> > > At least I hope this is it because it's the only tangible problem I've
> > >> > > found so far. I received my replacement leakdown tester and the B&S
> > >> > > "L" head engine was the first test to see if it was working properly.
>
> > >> > > I had tried a crude compression test a while back that showed no
> > >> > > symptoms, but with the tester, I located a lot of leakage at the
> > >> > > exhaust valve (I could hear a lot of hissing at the muffler).
>
> > >> > > The symptom was hard to start and keep running, but once the engine
> > >> > > was warmed up, it would keep running at 1/2 choke eventually running
> > >> > > at 80% power with the choke full OFF.
>
> > >> > > I can only guess the valve and valve seat expanded as the engine
> > >> > > warmed up to where there was enough compression to keep the engine
> > >> > > running once it got hot. I can't do the valves for several weeks, but
> > >> > > once I do the valves and true the head, the engine should be running a
> > >> > > lot better.
>
> > >> > > My thanks to everyone for their help, tips, and suggestions. I leaned
> > >> > > a lot.
>
> > >> > > Manjo
>
> > >> > When you do the valves...you're in the club!
> > >> > Good Luck,
> > >> > p_z- Hide quoted text -
>
> > >> > - Show quoted text -
>
> > >> Thanks. My wife and I took a Small Engine Repair class at the local
> > >> HS 2 years ago. I took good notes and I have the engine manual. I'm
> > >> looking forward to giving it a shot.
>
> > >> Manjo "L" head B&S 5 hp engineds
>
> > >The biggest challenge I ever had was when the boss's friend brought in
> > >a Lawn-Boy in a bushel basket (he took it apart-totally).
> > >This was an old one with real points and all.
> > >I'm not a fan of LawnBoy but I enjoyed getting it running.
>
> > I've set a few sets of points, using a match book cover. Gets them
> > running for a fine tune later.
>
> The old Brig's rule was 10.20.30 .010" coil gap, .020" point gap, .
> 030" spark plug gap.
I remember my dad using a paper match for plug gap...some 50 or so yrs
ago!
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