Oil Leak 3208

[bluebird3208]

--- In WanderlodgeForum@yahoogroups.com, "birdshill123"
wrote:
>
> I have been trying to find the oil leak on my 88FC. THe oil drips from
> the filters and the die cast piece that contains all the oil pressure
> switches is also covered with oil. I suspected the oil cooler but it
is
> dry. The sides of the block are also dry so it is not coming from up
> top. On the bottom of the oil cooler there is a fitting with a cap.
> According to my parts book this is some sort of spring loaded valve.
> What exactly is this valve? What purpose does it serve? All help
> greatly appreciated.
>
> Bruce
> 1988 FC35
>
Bruce off the top of my head.. ( which someone else on the forum might
shoot off) The valve is a bypass valve. It is there in the event that
if the filters become plugged the valve will open under pressure and
allow oil to bypass the filters and continue to lubricate the engine.
It never hurts to check the oil pressure switches themselves for leaks.
somtimes they will leak between the metal and the bakeolite top. If
you do not find the leak there I would use a mirro and a flashlight and
check the top front of the engine under the fuel pump looking for oil.
Oil can drip down the front and get caught by the fan and show as a
false leak. I say this because I had that very thing happen... it
showed up on the oil filters but came from a leak at the tubo...go
figure. If nothing else works paint it green and call it a detroit and
the oil leak wil be OEM.

Jim
1983 FC35
Yorba Linda,CA