Quote:
Originally Posted by FMTRVT
The subject of warranty or oil cooler failure keeps coming up. This is neither.
This is a foreign object introduced into the engine during motor repair.
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Jack, the EGR codes present, and the usual (for me, anyway) purging of coolant from the overflow and steam from the exhaust, slightly BEFORE the mechanical noise started...make it almost impossible to be unrelated to the cooling system, imo.
I mean, ANYTHING is theoretically possible and we saw multiple problems on customer vehicles all the time. But not occurring simultaneously like this.
If you're willing, put on your thinking cap and assume that there WAS a long-standing head gasket leak (and not just a cooler design problem that they replaced twice on my truck, so far) What circumstances can you think of, that would cause something to break loose and become lodged in the combustion chamber?
There's the perpetually hotter running and possibly hydrolock (which happened overnight when sitting at the dealers during one of the first repairs) I haven't seen the injector tip, nor the glow plug that came out of the hole and I'm not sure I believe anything the dealer says anymore. There's also the contamination of the engine oil and corrosive nature of coolant. There's also the sludge buildup that's mentioned in one of the TSB's for the EGR cooler replacement and special critical flushing procedure with a Ford flush product. And there's the story of "casting sand" being present in the crankcase on these earlier models, leading to sludge and causing failures, just to name a few I can think of off the top of my head.
Just fyi, the compression test (they finally did THIS time, after I asked them the previous 3 times to do, but they never did) came back with this damaged cylinder dead (no compression) and one other opposing cylinder low. The oil and fuel filter were fine, not dirty or plugged, and I think they did the "relative compression" type of test (which I HATE because it tells you just about nothing regarding the general engine condition, but I guess it's a lot harder to do a real leakdown or compression test on these beasts)
If you're in the mood, just throw out some possible ideas...sort of brainstorming session.
You guys are waaaayy ahead of me in knowing this engine. I only know what I've read, because the only 6.0L engine I own is apart on a shop floor and I haven't touched it with a wrench because it's still (HA HA) under WARRANTY.
