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FINAL WAS: Briggs & Stratton Engine Problem Manjo 05-20-2008
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Posted by Manjo on May 20, 2008, 4:45 am
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

Posted by on May 20, 2008, 6:40 am
> 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

Posted by Manjo on May 21, 2008, 3:30 pm
On May 20, 6:40=A0am, pheeh.z...@gmail.com wrote:
>
>
>
>
>
> > At least I hope this is it because it's the only tangible problem I've
> > found so far. =A0I 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. =A0I 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. =A0I 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

Posted by on May 21, 2008, 7:00 pm
> 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.

Posted by Oren on May 22, 2008, 6:43 pm
On Wed, 21 May 2008 16:00:49 -0700 (PDT), pheeh.zero@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.

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