Priming Oil in New Engine - No Pressure
I'm getting ready to startup a freshly built 4.6 L engine, and don't have oil pressure.
I removed the spark plugs and fuel pump fuse and cranked with the starter 10-15 seconds at a time, about 6 times. I have a mechanical oil pressure gauge connected where the small plug goes on the bottom of the filter housing, and it reads ZERO PSI - the needle doesn't even move while cranking.
I removed the gauge fitting and there's not even any oil in the filter housing! (I did pre-fill the filter) This tells me that the oil pump isn't circulating oil at all.
The engine sat for almost a year before I was able to get the rest of the car put together - pehaps the pump lost its prime? I've heard of others using a cheap garden sprayer connected to one of the oil filter housing ports to prime the modular engines. I plan to drain the oil and pump it back in using this method. Anyone have success building up pressure this way?
2001 4.6L GT
Engine/SC Build in Progress
Last edited by BadStang23; April 25th, 2011 at 02:04 PM.