Why Engine Removal is Generally Preferred:
* Accessibility: The oil pump is located deep within the engine block. Even with the engine in place, accessing it requires removing numerous components. With the engine out, you have much better visibility and workspace.
* Safety: Working underneath a vehicle with the body lifted is inherently risky.
* Proper Support: Lifting the body requires substantial, correctly positioned lifting points and a very strong lift. Improper lifting can cause damage to the frame and body.
If you're determined to consider lifting the body (strongly discouraged):
* Professional Assistance: You must have the expertise and the right equipment to do this safely. A mechanic with experience in this specific vehicle is your best bet.
* Proper Lifting Points: Identify the correct and strongest points on the frame to attach the lifting equipment. Consult a repair manual.
* Safety Precautions: Use jack stands rated for the vehicle's weight, even while the lift is engaged. Ensure the body is securely supported at all times.
The more practical, and significantly safer, option is engine removal:
* Professional Mechanic: This is the recommended approach. It's a major job requiring specialized tools, knowledge of the engine's components, and experience.
* Repair Manual: A factory service manual specific to your 1999 F250 V10 is crucial. It provides detailed instructions, torque specifications, and diagrams.
* Tools and Equipment: You'll need an engine hoist, various sockets, wrenches, and possibly specialized tools to remove the oil pump.
In short: While theoretically possible to access the oil pump with the body lifted, the risks far outweigh any perceived benefits. Engine removal, even if more labor-intensive, is the significantly safer and more practical approach. Get a professional opinion and quote before proceeding. The cost of professional labor is far less than the cost of potential damage to your truck or injury to yourself.
