J

John S

Well-Known Member

• Jun 23, 2016

• #1

My 2.25 petrol engine has developed a tendency to stall when I pull up. I've cleaned and checked the points, plugs, air filter, engine breather system. The carb is a Weber 345 and all looks ok. I tweaked the mixture screw and thought that had solved the problem. Still doing it. Could it be defective vacuum advance, leaking vacuum pipe. Ideas welcome.

 

blue beasty

Leaks an prone to bits dropping off

• Jun 23, 2016

• #2

Blocked idle jet?

They are supposed to be a little prone to it.

 

Disco1BFG

Well-Known Member

Full Member

• Jun 23, 2016

• #3

blue beasty said:

Blocked idle jet?

They are supposed to be a little prone to it.

Click to expand...

My first thought too.

 

Grem

Active Member

• Jun 23, 2016

• #4

Does it do it only immidiately after you drive it hard? Fuel level dropping due to insufficient supply or needle valve too restrictive

 

J

John S

Well-Known Member

• Jun 23, 2016

• #5

Thanks guys. I was reading about this online. I'll investigate and let you know how it goes.

 

J

John S

Well-Known Member

• Jun 23, 2016

• #6

Grem said:

Does it do it only immidiately after you drive it hard? Fuel level dropping due to insufficient supply or needle valve too restrictive

Click to expand...

Yes it tends to happen after a good drive.

 

Grem

Active Member

• Jun 23, 2016

• #7

I meant if you were full throttle up a hill with traffic lights at the top.

If it still does it after driving normal load and revs for more than 10 seconds then my question is irrelevant

 

J

John S

Well-Known Member

• Jun 23, 2016

• #8

It's irrelevant .

 

J

John S

Well-Known Member

• Jun 26, 2016

• #9

Took out the idle jet and gave it a good blow and clean. Problem sorted. Thanks guys it was beginning to stump me and not so familiar with the Weber carb....up to now . Lots of info on these carbs on the web. Cheers.