fuel in oil w/webers

[jeff parker]

My 2.4 911T has a Weber conversion. I've owned it for 6 years without this problem. It got enough gasoline in the oil to raise the level about 2 quarts. Any ideas? Stuck float?

[911pcars]

Stuck float, high fuel (float) level or excessive fuel pump pressure. Look down the carb throats during idle. There should be no fuel discharging into the passage. If so, fuel level is too high. Fix whatever is causing it, then use the PMO external float gauge to check the level. Change the oil too.

There's a remote chance the float pivot pin has backed off. However, this is pretty drastic as it allows the float ... to literally float. The engine will hardly run due to the volume of uncontrolled fuel.

Sherwood Lee
http://members.rennlist.org/911pcars

[masraum]

Fix it quick, thinned oil can be bad in a hurry!!

[needlevalve]

Not sure if this applies to Webers but I had the exact same problem with my 70's Zeaniths. In the bottom of each bowl there is a needlevalve which allows the flow of new gas into the bowl until the float raises a tapered valve which prevents any more gas from entering. If this valve is defective gas continues to overflow the bowl, and enter the crankcase through the intake (and raises your oil level). The valve is easily removed and replaced. Just remove your air filters complete with all tin, and unscrew valve assembly with 11 or 13 mm socket.

Hope this helps

Matt

[1974carrera]

Originally posted by 911pcars
Stuck float, high fuel (float) level or excessive fuel pump pressure. Look down the carb throats during idle.....http://members.rennlist.org/911pcars

B] Just be sure to use a mirror[/B] to look down the carb throats while the engine is running...you can lose an eyebrow, or worse, if you're looking down the carb and it pops back through the throat.