[Imajeepguy]

Hey guys....ive had my 74 alfa just sitting for the last 5 to 6 months.....i developed an oil leak coming from the rear main seal....the oil was real thin and smelled of gas and it also was unusual that the oil level was so high that it was coming out of the rear main seal.....so i drained the oil today and way more then 6 quarts came out and it was at least a 50/50 mixture of oil and fuel......how can that happen? Any ideas?

 

[ghnl]

Spica or carbs? I think Spica can leak directly into the sump. Carbs can overflow, gas runs down the intake into the cylinders and then past the rings into the sump.

 

[144]

Almost certainly a bad injection pump. Download the Spica Bench Check Guide.

 

[Imajeepguy]

Spica or carbs? I think Spica can leak directly into the sump. Carbs can overflow, gas runs down the intake into the cylinders and then past the rings into the sump.

My spider has a spica system!!!

 

[Legomedic]

On carb models there is a mechanical fuel pump near the dizzy. The rubber membrane can fail resulting in fuel being pumped to the carbs and into the crank-case.

Does the injection system share this feature? If so I would check the membrane.

The fix requires a new fuel pump (ask me how I know).

 

[144]

No. The Spica system has an electric main supply pump.