Quote:
Originally Posted by SG4247
Sorry, my bad.
Actually, it looks like Bank 1 (yellow line top graphs and blue line bottom graph) is very late.
Then bank 2 is a little late. Maybe not enough to matter.
So, you’re just gonna pull the front cover and check the timing marks, chains tensioners and possibly swap on good intake cam phasers. Definitely want to fix the galley gaskets.
There are scarf cut seals on the cam covers, that supply oil to the phasers, you could easily pop those out and inspect them.
You can also see if the tone wheel on each phaser is clocked to the bolts on the front of the phaser correctly. I have heard that they can move (although this seems unlikely).
I had two spare phasers I just sold. The buyer swapped them on, and still had the same code. His motor was super high mileage and still had original galley gaskets, chains and tensioners.
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Its all good - thanks for the feedback! Can you go into more detail on the scarf cut seals on the cam covers that can be inspected?
I was considering removing the cam covers to inspect the tone wheels, but the passenger side one seems to be obstructed by the belt tensioner. Perhaps there is a way to inspect through the sensor hole with a bore scope? Apparently the wheels can lose their position relative to the phaser timing marks and throw codes. If this is the case, my guess is that bank 2 is on the edge of acceptability relative to the crank, but bank 1 is too far out and that is why I only get the P0011 code. The good news is that the engine would still be mechanically in time and not at risk of killing itself. Its being lied to by the tone wheel. Otherwise, something is locked up and the cams are actually out of time.
I have been coming to the realization that I need to break it down and replace the phasers as well as all the other stuff behind the timing cover. Being only 77K miles, the timing chains are probably fine, but since it ran on low oil, Ill probably replace them and the guides anyway with a kit. EPS gallery gaskets for sure and water pump because - why not.