Engine shaking and oil issues

[BigDaddyJDB]

Hey Guys,

I’m new to the sight but I have owned a 2003 Expedition with the 4.6 liter engine for about ten or so years. It has 170,000 miles on it. My son was driving it when he said it started running really rough and the oil pressure dropped to nothing. So I got it home and changed the oil and sensor. Well we found this, have you guys ever seen this

 

[riphip]

Is that a broken crossover pipe??

 

[Hamfisted]

Are we looking at a hole in the top of the timing cover ? Pieces probably fell down into the oil pan and blocked the oil tube pickup, killing your oil pressure. Odd at only 170k miles, but it does happen. Are you the original owner ? Have you been doing regular interval oil changes and using synthetic oil ?
Most likely a big chunk of timing chain guide broke off and smacked the timing cover right there. That hole may have been there for a while. If you have a borescope camera you can feed it down in that hole and look around at the timing chain guides. If the motor's not trashed from running it without oil pressure you may still be able to salvage it with a timing chain replacement job. You'll have to pull the oil pan and timing cover.

 

[BigDaddyJDB]

I’m the second owner, my son was driving it, he said he heard a loud noise and drove another 20 miles. Don’t worry I already hazed him. I hope I can get away with a timing chain replacement and didn’t torch the engine. It still starts, shows oils pressure. I only ran it a few seconds, I had done a oil change. Can I pull the oil pan with out doing anything to the engine?

 

[Hamfisted]

Is that a hole in the timing cover? You'll need a new timing cover. But yes, you can pull the oil pan off by itself, just have to get the clearance under the motor. Remove the crossmember. If you're going to do a timing chain & guide replacement, look at replacing the oil pump at the same time while the oil pan is off. It makes getting to those oil pickup tube-to-oil pump bolts much easier. You may have to run 10w-40 oil in it anyway if it was actually driven 20 miles without oil pressure....


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Melling Timing Kit from Rock Auto

Melling High Volume Oil Pump at Rock Auto


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