Engine problems?

[gardentg44]

Just acquired a 4hp Briggs stratton rotavator,

the problem is its shoving fuel back through the carb,

and flooding it.

anyone had this problem?

there must be some mechanics out there.

advice please ;D

[gardentg44]

[saddad]

There will be, but sadly I'm not one of them...  :-[

[naff]

Could be ant of a few poss causes.1)Blocked jet 2)Choke still on 3)Faulty diaphragm on carb. I suggest you carefully strip it down,clean it,blow through the jets and retry.They,re not too difficult to maintain.

[Bjerreby]

Could be ant of a few poss causes.1)Blocked jet 2)Choke still on 3)Faulty diaphragm on carb. I suggest you carefully strip it down,clean it,blow through the jets and retry.They,re not too difficult to maintain.

If you blow it through, make sure to take the float out first (if it has one), otherwise it will get rattled about inside and afterwards will look like a winkled pea, never to work again.  ;D

[davyw1]

Not that i am a  rotorvaror fixer but if the jets are blocked no fuel will get thro so therefor it wont start.
Are you sure that it is only oetrol going thro and not both petrol and oil as that would be the gasket head.
But if you are sure its just petrol then i would guess on it being that the timing id out. This could be caused by a chipped cog.

[Mr Smith]

I would go along with what others have said also have a look for a dirty air filter, look on the engine for the ID number and get a carb kit, there is a good Briggs and Stratton agent in Weston Super Mare who does an overnight courier which you will find on the internet, :)

[davyw1]

I wonder if the previous owner has been tinkering and put the float back in upside down or snapped the needle

[gardentg44]

[I wonder if the previous owner has been tinkering and put the float back in upside down or snapped the needle]

the previous owner did have the carb to bits.
there is no float or chamber on this machine though,
it something called a straight vacuum carb ??? ???

[tonybloke]

sounds like the needle is slightly bent ;)

[Bjerreby]

Sounds like the air filter is blocked or the float valve is dirty. Try this link....

http://www.westongm.eclipse.co.uk/Diagnosis.html

[davyw1]

Had a didcusion over this
I take it thet the machins starts up and runs and the only fault is the fuel being pushed back into the carb and there is no sign of oil pressent.
Question does the the carb give of smoke when its running if so then a piston could be stuck.

[Bjerreby]

Had a didcusion over this
I take it thet the machins starts up and runs and the only fault is the fuel being pushed back into the carb and there is no sign of oil pressent.
Question does the the carb give of smoke when its running if so then a piston could be stuck.

Since when did a 4 HP engine have more than one cylinder? And even if it did, then if one was stuck then they are all stuck!  :o

[Mr Smith]

Gardentg44,
                         can I suggest that you give the exact model of your Briggs engine and then members can and will give you the correct advice, rather than folk getting a bit irate,  :)

[davyw1]

Had a didcusion over this
I take it thet the machins starts up and runs and the only fault is the fuel being pushed back into the carb and there is no sign of oil pressent.
Question does the the carb give of smoke when its running if so then a piston could be stuck.

Since when did a 4 HP engine have more than one cylinder? And even if it did, then if one was stuck then they are all stuck!  :o

Like i stated i am no rotervater fixer
But since when has it not been allowed to try and help some one on this forum.

[Bjerreby]

Had a didcusion over this
I take it thet the machins starts up and runs and the only fault is the fuel being pushed back into the carb and there is no sign of oil pressent.
Question does the the carb give of smoke when its running if so then a piston could be stuck.

Since when did a 4 HP engine have more than one cylinder? And even if it did, then if one was stuck then they are all stuck!  :o

Like i stated i am no rotervater fixer
But since when has it not been allowed to try and help some one on this forum.

No offence, and of course you can try to help, but suggesting "a piston might be stuck" really made me giggle. I thought you might be starting a comedy forum.

[gardentg44]

Gardentg44,
                       [  can I suggest that you give the exact model of your Briggs engine and then members can and will give you the correct advice, rather than folk getting a bit irate,  :) ]

Yes mr smith.

its a merry tiller major,

fitted with a 4hp briggs stratton engine

[Mr Smith]

Too much fuel(flooding) is due to either a blocked air filter or faulty float/pump diaphragm operation.
Check and replace the filter if found to be badly soiled.
Service the carburettor. With float carburettors, check that the float does not contain liquid(leaking) and that when held upside down, the valve stops you blowing through the inlet. Change any carburettor diaphrams.
The addition of an in line valve on fuel line fed engines helps to minimise flooding problems.

Straight from the book, :)

[gardentg44]

Thanks mr smith.

think i will order a carb kit and replace the diaphram,first

Could it be a stuck valve? hope not.

[davyw1]

That was what what i should of said instaed if piston a stuck outlet valve