Very Loud Rattle from Engine *With Video*

[secretaznsauce]

i had a simliar issue with a 318 before, although oil wasn't missing. the oil pump was clog, the pick up filter was filthy. the PO must had not changed the oil ever.

[1stE53]

Originally Posted by TheGodfather

Good news,

My brother fired up the X today, the engine made the noise immediately after startup but then the noise diminished. He also revved the engine and heard nothing.

He has not taken it for a spin yet, we will wait to do the full oil change.

Oil level has dropped to minimum on the dipstick, even though I topped it up to what I thought was full a day ago. The oil does leak, but there is not 2 litres of oil on the garage floor. Perhaps the oil has seeped into the filter and entire engine, where as I didnt give it enough time before?

This gives me hope that the correct level of fresh oil will solve this problem. It also makes me cringe to think just how little oil was in the engine before I topped it up on Saturday.

Anyways, I am definitely counting on this oil change solution here.

_________

Question 1:

I have searched for "engine flush" on the forum but have found nothing.

Does anyone know how/what you do to essentially clean the inside of the engine when its empty of oil, just before adding new clean oil and filter? Products, procedure? Yay or nay?


Question 2:

Say I do find metal shavings in the old oil, but the noise goes away after the new oil change. Should I assume some damage was done, but not enough to compromise the engine, or am I not out of the woods?

IMO I would let it drain for 24 hours. Then I would pour a new quart of oil in the engine and let that drain too for another hour or so. When filling, carefully pour a quart over the oil filter before putting the lid back on it. Ensure it is good and soaked. Mine took the full 8 quarts. I stopped at 7.5 quarts to measure, all 8 went in.

Thank you for keeping us posted.

[TheGodfather]

Bad news.

Copper and silver metal shavings I'm the filter.

I changed the oil and filter. The noise improved ( not detectable at idle, increases in volume with rev)

I'm now depressed. The x is going to the dealer Monday for a diagnosis.

So what am I looking at here 5-10 grand?

[JT///MC]

damn, this thread has crazy stuff in it. First off 3 qts below max is catastrophically low and I'm pretty sure your engine is toast if you took it to redline. What you had was metal to metal contact inside your engine without anything to lubricate the parts.

Second, 7.8L is the size of the windshield washer tank, not the displacement on the engine. If it were 7.8L I'd hope it have at least 700hp to boot but it'd prob only get 5mpg.

Lastly, good luck dude. Time for a new motor or rebuild it sounds.