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- - Engine Knock in 03 (https://www.fordforum.com/forum/ford-expedition-21/engine-knock-03-a-11373/)

blitzpatrick

01-13-2008 08:34 AM

Engine Knock in 03

I have an '03 Expedition and I started it yesterday and heard a horrible engine knocking sound (think it was coming from the engine). I had not heard this beforer. Checked the oil and it looks okay. Any ideas???

Thanks in advance

oldtimer35

01-14-2008 12:21 PM

RE: Engine Knock in 03

Did the knock go away? Some aftermarket oil filters do not have a drain back in them and will allow oil to drain down on the system. Also, what oil are you using? I believe this engine is a close tolerance motor and demands 5w20 oil and nothing heavier. Seen folks run 10w30 in them and ruin the motor.

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