Engine Performance problem
1990 Chevy Corsica 6 cyl Front Wheel Drive Automatic 147000 miles
The original problem was that the rear main seal was leaking along with some minor coolant leaks. Then one day the 20 amp fuse blew for the fuel pump. The fuse was replaced and the fuel pressure was measured at just 36 psi.
Fuel pump - pressure now about 45 psi.
Fuel lines and filter are new from pump to engine.
Oil pressure switch (twice) and connector are new.
Fuel pump relay replaced.
Rear main seal and intake gaskets.
Plastigaged crank and rod bearings to make sure they were within tolerances.
Switch to 20W – 40W oil.
Engine starts when cold and runs approx. 5 minutes and dies. When cranked – no immediate fuel pressure, however it rises slowly to normal after a 5 - 10 seconds but still no start UNTIL several hours pass.
Tuesday, August 3rd, 2010 AT 10:06 AM