the_supernerd

I am rebuilding the carburetor on an '86 pickup because the bowl was over-filling which spilled fuel into the throat of the carburetor. It should be a float or needle/seat problem. The float appears to be made from Nitrophyl, and I have read that those do not fill with gas like a brass float when bad, but get saturated instead.

Is there any easy test to find out if the float is saturated? I have also read that Toyota floats rarely go bad. Can anyone back that up? Anyone ever verify that their float was saturated?

Odin

Perhaps there's a weight specification you can go by?

Something else to think about..
Have you checked the fuel pressure?
Have you replaced your fuel pump with an aftermarket piece? Unless it's properly regulated you could be allowing it to run with too much pressure overwhelming the needle and seat causing a rich or flooding condition.

bswarm

Unless the price has changed significantly since I rebuilt them, they're only a few dollars.

the_supernerd

I noticed there is a weight listed on new ones, so maybe I can see if the weight is significantly more than that. The fuel pump appears to be original, and the pressure was 5 psi at higher RPMs, and less at idle, so I doubt that is the problem unless the pressure spikes randomly or something.

A new float at Autozone is about $30, so I should probably just replace it, but I would like to test the old one if possible.

the_supernerd

I looked closer at the float today, and it looks dried out and possibly has some small pits in it so I am thinking it is best to just replace it. Does anyone have a recommendation on a good brand to use or maybe brands to stay away from?