Faulty lawnmower engine
 

The engine on my Suffolk Punch 35,a 4 stroke petrol model causing
problems.With a pull cord start,it starts OK and then runs for about 2
minutes and then dies.After a delay,it starts up again and then dies.
I have cleaned the air filter and renewed the spark plug to no
avail.Anyone any suggestions please ?

Faulty lawnmower engine
 

"Martin" wrote in message
...
On Wed, 15 Aug 2007 06:52:33 -0700, pete wrote:

The engine on my Suffolk Punch 35,a 4 stroke petrol model causing
problems.With a pull cord start,it starts OK and then runs for about 2
minutes and then dies.After a delay,it starts up again and then dies.
I have cleaned the air filter and renewed the spark plug to no
avail.Anyone any suggestions please ?

Is the hole in the filler cap blocked?
--

Martin


Petrol starvation.

Not sufficient petrol getting through because as Martin says the filler cap
blocked and air cannot replace petrol drawn off at the same rate.

Mike


--
The Royal Naval Electrical Branch Association.
'THE' Association if you served in the Electrical Branch of the Royal Navy
Reunion Bournemouth August/September 2007
www.rneba.org.uk
"Navy Days" Portsmouth 25th - 27th July 2008. RN Shipmates will have a Stand

Faulty lawnmower engine
 

"'Mike'" wrote in message
...



"Martin" wrote in message
...
On Wed, 15 Aug 2007 06:52:33 -0700, pete wrote:

The engine on my Suffolk Punch 35,a 4 stroke petrol model causing
problems.With a pull cord start,it starts OK and then runs for about 2
minutes and then dies.After a delay,it starts up again and then dies.
I have cleaned the air filter and renewed the spark plug to no
avail.Anyone any suggestions please ?

Is the hole in the filler cap blocked?
--

Martin


Petrol starvation.

Not sufficient petrol getting through because as Martin says the filler
cap blocked and air cannot replace petrol drawn off at the same rate.

Mike

I once had a car that behaved like that but more like after an hour or so
driving. I finally twigged what the cause was when filling it up with petrol
one day. When I took off the petrol cap there was a big "whoosh" as air
rushed into the vacuum in the tank. A small hole drilled in the cap and
problem solved.

David.

Faulty lawnmower engine
 

Blocked fuel filter, sticking float?? :)
--
ßôyþëtë
London, UK

Faulty lawnmower engine
 

On 15 Aug, 18:44, "BoyPete" wrote:
Blocked fuel filter, sticking float?? :)

All of the above comments, plus:
blocked air filter
exhaust valve sticking (could be inlet, but never has been in my
experience) when engine warms up - result of badly needing oil.

Mixture out of adjustment.

But I'd go with the fuel starvation route first.