I'm running two Rochester's and have one that seeps a little, just enough to
stain the carb over time but it really causes no problems otherwise and I live
with it. As I understand it this is caused by the casting being warped. Early
Rochester's (such as those used in '47) with the thin top are the worst
offenders
and should be avoided if you can use a later one with thick top casting.
If you have gas dumping out as in the base is really wet and the truck won't
idle right the float needle valve is leaking, probably due to junk in the gas. I
didn't see mention if you have a inline gas filter but IMO this is a must. The
screen in glass bowl pumps catch only bigger debris.
Grant
50 Chevy 3100
52 GMC 150
VIKINGHILL@aol.com wrote:
> Hi Bob and all,
> I haven't done a pressure test on the fuel pump. The truck ran just fine for
> 6 mos on the 20 year old rochester that was on it when I bought it. Then it
> started leaking and I could not get it to stop with adjustments to the float
> and a rebuild kit or two. I did however replace the points, plugs,cap, rotor
> and condenser before the last "quality" carb overflowed. Does that have any
> bearing on it. When I pulled the plugs out to replace, The #1 cylinder is
> smoking. I gapped the plugs at .035" and the points at .024" and set the
> timming by ear till it ran smooth. The last carb that I had on it was a
> Carter and I liked the looks of it better, but this time I ended up with a
> Rochester, and it lasted about 3 miles before dumping gas around the bowl
> seal. (they rebuilt it using 2 of these seals).
> These seals started leaking (seaping) at an idle, not dripping just coating
> the front of the carb with a small amount of gasoline.
> any and all suggestions would be appreciated, and happy holidays.
> Casey
> 1947 3100 "Thriftmaster"
> Forest green with a big red bow, sitting in the drive way. unable to
> move......
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
|