Vacuum Lines

[bcs163]

Hello

I'm working on my new project car ('76 124 Spider) and I'm trying to get the car to idle smoothly under 2k rpm (yes I know that is high)

I started checking vacuum lines and came across this under my carburetor:


Does anyone know what this is? I'm assuming something that needs a vacuum line - but what is it?

[rja]

the item in question appears to be a mechanical fuel pump. I'm assuming you have an electric fuel pump mounted somewhere that is supplying the carb w/ go juice. if so, said item requires no vacuum lines or fuel lines attached. judicious application of carb cleaner in and around intake areas generally proves fruitful in locating vacuum leaks.

[bcs163]

Thanks rja, for identifying that mystery part for me.

Yes - I do know there is an electric pump in the trunk for the go-juice.

I wasn't sure what it was, but I figured someone else has seen it before. I guess I should have waited for my Haynes manual to show up in the mail before I started tinkering...

[bradartigue]

Thanks rja, for identifying that mystery part for me.

Yes - I do know there is an electric pump in the trunk for the go-juice.

I wasn't sure what it was, but I figured someone else has seen it before. I guess I should have waited for my Haynes manual to show up in the mail before I started tinkering...

Get the FIAT manual as a cross reference. The Haynes manual has some errors and isn't very easy to follow. The shop manual is far superior.

[bcs163]

Thanks bradartigue for the info. I did just get my Haynes Manual as well as finding a PDF of the shop manual - definitely a difference!