2006 Ford Expedition Crank, no start with a lot of diagnostics...

[GEONV]

Will do, thanks for the link. I've had an old black and white mac tools one that has started to really fritz out- that one looks nice. I'll keep updating as I find stuff.

 

[GEONV]

Borescope arrived today! I put a it down in the #5 cylinder (Drivers side front)- and with the drivers side phaser aligned how it should be for cam timing the cylinder is at top dead center- but the exhaust valve is open. not enough to hit the piston but it's open. I'm thinking maybe it sheared the phaser pin and let the phaser spin slightly on the camshaft?

 

[Hamfisted]

That's with the "L" timiing mark on the driver's side right? From what you describe happening I would pull the timing cover off and inspect everything and re-time it so you know it's correct. You don't see any piston top damage in the other cylinders on bank 2 ?

 

[GEONV]

Correct. I ran out of time to look, but plan to check all the cylinders That bank. Yeah that would be prudent. Fun times repeating others work.

 

[GEONV]

Sure enough it sheared the pin and let it rotate. Got the new phaser on, put the borescope in the oil fill to verify timing mark was in correct position, snaked down to the crank and found a broken off piece of tensioner on the way. Gah

 

[Hamfisted]

I'd replace both phasers with Ford phasers. Pull the timing cover, inspect the tensioners and chains. Replace the oil pump with a high volume Melling if it still has the stock pump on there. Pull the oil pan and make sure all the trash is out of the oil tube inlet and you don't find any big chunks of metal in the pan. Do you see a Ford part number on that phaser? Or did somebody do a half-ass job with Chinese parts ? Use only Ford phasers.





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[GEONV]

My thinking exactly. Nope no ford part numbers. Cheap garbage.

 

[Dryer Dave]

To me, it sounds like a timing issue. Timing chain slipped so bad that it put the compression out of wack and won't start. I am not sure if this is an interference engine, but I think it is. Keep it simple...suck, squeeze, bang and blow. Sounds like timing to me.

 

[GEONV]

Ok, finally got around to redoing the timing. Looks like the previous owner used some cheap chinesium parts and put in new cam phasers. I think they didn’t change the timing chains and certainly didn’t change the tensioners and guides. One of the timing chains was stretched enough it ate the front cover alive. Besides being a total pain it was pretty straightforward. However it still doesn’t start. Cranks completely differently now way faster and sounds like videos of this motor cranking. Has spark and fuel and exhaust smelled badly of gas so possible I flooded it when I was cranking it with crank position sensor unplugged to prime the oil.

 

[Hamfisted]

How's the compression now ? This has been an ordeal !