Re: Gasoline in the oil

Jerome Yuzyk (jerome(at)supernet.ab.ca)
Fri, 18 Dec 1998 10:43:49 -0700

In article <000101be2a89$c22d7e00$3ae26ed1(at)rufous>, "K. Patrick Wheeler" <pwheeler(at)ix.netcom.com> wrote: >
> Tried putting a new diaphragm in the fuel pump but it did not work. Without
> the time to try and figure out why (we are down to just this one car for a
> few weeks and needed it fixed _now_) I went ahead with an electric fuel
> pump. The mechanic I was working with had one that puts out 3 psi maximum
> and he assured me that the pressure regulator would not be needed when I
> asked him to put one on. He'd used the pump on several of his racers and
> swore by its dependability. I'd still like to try and fix the mechanical
> one either as a fall-back or as a main and keep the electric as a fail safe.
> Figured I'd wait for a thread on restoring your fuel pump. . .
>

Correct me if I'm wrong, but there are only two places (in the simplest case: no emissions add-ons) where gas and oil can meet: 1. at the fuel pump (a leaky diaphram), and 2. in the combustion chamber (ring wear and a rich mixture).

In the emission-control case, the side- and valve-cover breathers connect to the intake manifold, with the PCV valve in between. Maybe your PCV is bad?

I rebuilt the top end of my fuel pump (diaphragm up) from a SS kit. There wasn't much to it. Along the way I noticed the bowl was corroded through to the top chamber, right in a corner where a lot of crud had collected over the years to seal the hole. One of the risks of trying to be really clean on old metal. 

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