carb tool

[speedo]

I'm not sure what possesed me...but I think I have seen somebody suggest this. I have the PMO float level gauge which works great. Except when you disconnect it and move to a different float bowl...then all the fuel spills out into whatever container/dixie cup you have shoved underneath it. I purchases a small fuel cock and modified the PMO float gauge so that with the cock closed, the fuel in the float can be measured and the shims adjusted. However, when you want to move to the next float, instead of dumping the fuel...I open the valve and save the fuel into a waiting cup. If you want to PM me on details...I will help with the necessary
parts.





Speedo

[1QuickS]

I made a similar mod using a brake bleed valve.



Paul Abbott
www.PerformanceOriented.com

[speedo]

Paul,
You trumped me with the "Uber rare" Mahle/Bosch specimen container
Now I gotta get one of those!

Speedo

[Bob Ashlock]

Great Idea on being able to avoid the fuel spillage. This got me thinking...

Being a do-it-yourself kind of guy, I'd like to make my own float level gauge. Can you tell me the following dimensions:

Centerline of screw fitting to each of the 4 marks on the sight gauge? I assume the wanted float level is between these marks, but can't seem to find this critical piece of information anywhere. If I have the dimensions, I can quickly make up my own gauge and use it right now while I have my carbs sitting on the workbench.

THANKS MUCH!!! --Bob

[speedo]

Bob,
Center of shaft to lower pair of lines 25mm
Pairs of lines are 2mm apart
Center of shaft to upper pair of lines 33.5 mm
So bottom of lower pair to bottom of upper pair 8.5mm

Hope this helps.

Speedo

[Bob Ashlock]

Thanks very much for your response. Now I'll get busy and see if I can make my own. I'm sure I'll spend an inordinate amount of time concocting something that will work, just to save a few bucks!!

[Bob Ashlock]

Thanks to the info provided, here is a "quickie" tool to check float level on the Webers. The plastic elbow is common drip-watering fitting. Slide a small O-ring onto this and it will push-in and seal nicely into the float bowl drain port. Add a vertical piece of plastic tubing to show correct float level marking ~33.5mm up from centerline of the drain port.

This may not be as elegant or perfectly accurate, but it allowed me to do a cursory check on my floats while my carbs were on the workbench, being gravity-fed from a small gas can. It quickly showed the float level in one bowl was low by about 4mm.

For applications where the carbs are already installed in the car, I can imagine by substituting a "T" fitting a "drain" hose (with a shut-off valve) could be attached, thereby avoiding the familiar mess associated with the bowl draining all over when the "tool" is removed.