|
Posted by Manjo on April 20, 2008, 8:36 am
wrote:
> >Manjo wrote:
> >> I have a leaf blower that uses a 5 hp B&S "L" head engine. =A0...
> >...
> >> The leaf blower was starting to run poorly last fall. =A0This spring it=
> >> started right up, but after4-5 seconds after running smoothly at
> >> proper speed, it will slowly loose rpms and finally stop after 15-20
> >> seconds.
>
> >> I have cleaned the pick-up tube, replaced the carburetor diaphragm
> >> fuel pump along with the gaskets between the carb and the fuel tank,
> >> and the gasket between the carb and the engine. =A0I've also
> >> disconnected the engine ground wire that normally kills the engine
> >> when the throttle is tuned full off. =A0But after doing all this the
> >> engine still will not stay running for more than 30 - 40 seconds.
>
> >> Thanks in advance for any tips, suggestions, or coments.
>
> >I've not read the rest of the thread but noted you were apparently still
> >searching --
>
> >Anybody suggested checking the exhaust screen (I'm assuming it has one)
> >for C deposits? =A0Sounds like it could be clogged w/ buildup which will
> >cause such symptoms...
>
> How about checking around the head gasket for leaks. I had a lawnmower
> engine that exhibited a similar problem.- Hide quoted text -
>
> - Show quoted text -
I know it doesn't do much good, but I did do a visual check of the
head gasket edges. Nothing unusual, but I'll check it with some sudsy
water today. I lent out my leak down tester (I hope to get back soon)
so I had to use a standard cylinder compression tester. I got
consistent readings of 74 psi with a warm (not hot) engine. I think
this is a good reading since it's a small cylinder, unlike an auto
engine cylinder. Manjo
| 
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap