Technical Weber 30DIC

[Ragge]

My Fiat wont start normally.
Not long ago I professionaly had renovated the carburator Weber 30DIC. It was good for a year but now it will not behave good.
My guess so far is that its a carburator issue.

Main issue is I have to try 7-10 times before it finally idle.
Then when its idle I have to push and hold the gas pedal steady to 2000/2500 turns to prevent motor from stopping. I have to hold it there for 30-60 seconds to be sure its not stopping. Tried to give it shoke in this prosesss but then motor die out in 1 second.

After holding down the gas pedal 30-60 seconds it runs normally at around 1000turns.

Could this be some issue with the float, the brass ball inside the carburator because it seems
its gets to mutch fuel or to little?

Any advice is grateful..

Ragge

 

[bugsymike]

My Fiat wont start normally.
Not long ago I professionaly had renovated the carburator Weber 30DIC. It was good for a year but now it will not behave good.
My guess so far is that its a carburator issue.

Main issue is I have to try 7-10 times before it finally idle.
Then when its idle I have to push and hold the gas pedal steady to 2000/2500 turns to prevent motor from stopping. I have to hold it there for 30-60 seconds to be sure its not stopping. Tried to give it shoke in this prosesss but then motor die out in 1 second.

After holding down the gas pedal 30-60 seconds it runs normally at around 1000turns.

Could this be some issue with the float, the brass ball inside the carburator because it seems
its gets to mutch fuel or to little?

Any advice is grateful..

Ragge

Have you checked the idle jet, it is accessible from the outside and often just has a tiny bit of dirt in it.
Another point I check on those carbs is with the top off, the two chokes tubes have the main jets, but once removed underneath them are brass emulsion tubes with holes in. Don't mix up as different jet sizes.
Many times after pushing a match stick in them to lift the tubes out, I have then tapped them on a firm surface and water and dirt drop out as it collects in them causing poor running.
At the same time you will be able to check your float jet operation too.
I assume no air/vacuum leaks on engine inlet side?

 

[timmycm850]

Did you just bolt the carb on and expect it to run perfectly out of the box as it was renovated..

 

[timmycm850]

The main run jets are other back of the carb as you look at it in the car. I suspect as busy mike says there is minor debris I the idle jets. Also you may need to increase the throttle offset linkage for when you are on choke