I have a question. Can anyone tell me what my compression readings should be? I cant find the spec in my manual nor can i find it on fte. I have found the procedure numorus time but not the psi reading i should have.
Any help would be great. My 5.4 has lots of miles, is loosing power and using lots of oil.
moto mel, help? not sure what numbers are for me. maybe i am doing my test wrong but i have read to warm the engine, crank over no more than 7-8 strokes and record the highest reading. im getting around 150 psi across the board but the engine has almost 200k on it. just wondering what it started at.
If I could butt in with a similar question: I'm looking at a used 2003 5.4L engine with 109,000 on it from a salvage yard. They took individual cylinder readings for me as
Front of engine
Are these good readings for this many miles, should I pull the trigger on it for a replacement for my tired 98' 5.4L 2V EGR that is loosing power and milage and is making valve-trane noise collapsed lifter and possible valve-trane damage? What are optimal readings for a freshly broken-in new engine like this? And what would be too low to be considered worth buying as a replacement engine. I wish there was a chart somewhere showing a range variation and suitability for service life on any given engine?
May i piggyback onto this?
Hello all. Im new to the Ford world. I have been a Toy guy my whole life (currently 43) and I now need a full size van in my life.
I just bought a 2010 E350 with the 5.4. It has the Quad van 4WD conversion and is in great condition, except for one thing. The motor has 203,000 miles and cylinder 8 has **** for compression. 65 to be exact. All the other 7 have compression between 160 and 180. My options according to the mechanic are, to have new coil pack, spark plug, fuel injector, coil boots, cylinder head, piston and wristipin, head gasket, valve cover gasket, lower intake and oil pan gasket ALL replaced...OR a Jasper motor installed.
The motor swap is obviously more $, but as long as Im spending $$ , I want to do the right thing and get lots of life out of my decision.
The transmission is being rebuilt, so that comes out either way.