Seized engine - any ideas?

[steelzeus]

that is the exact same thing that my vx did before it died. but I am rebuilding it now

[psychos2]

yes it would make a difference if the oil filter had a double gasket.but it would have happened long before now.the oil did not burn off.it would have looked like you were on fire.there is an oil leak somewhere.a good mechanic should be able to find it. there was no puddles of oil when you stopped? possible rear main seal ?check the places where you stopped to see if there is a trail of oil.
steelzeus, did you find any oil in your coolant? shawn

[Dare2Dream]

Checking the radiator is definitely the first thing to do.

Do one more thing, check the PCV and let us know if it is soaked in oil. That has happened before

[Joe_Black]

Do one more thing, check the PCV and let us know if it is soaked in oil.

LOL, they're always soaked in oil anyway. They do sit right over the valve-train.

[psychos2]

Checking the radiator is definitely the first thing to do.

Do one more thing, check the PCV and let us know if it is soaked in oil. That has happened before

there is no way that she lost 5 qt of oil out tha pcv valve. i have put in a breather instead of the pcv valve and have had no oil loss in 2 weeks. i have lost oil from the pcv valve sticking ,maybe a quart or a quart and a half in 1000 miles.
there has to be an oil leak in order to lose over 5 qt in that amount of time. shawn

[ChicagoKelly]

Hey guys thanks for all these great ideas. I truly appreciate it!

Mech says its hard to "test stuff" since the car does not run. But I"m trying to get SOME kinda answer so here's what I have.

Had mech pull the PCV...its fine he said. He said its "a little oily" due to location but not "soaked in oil". Did vacuum check on it: it was fine.

Last time I replaced PCV was 40k miles ago - had I known they should be replaced every 3k I sure would have done it.

Radiator fluid: looks fine, says mech.

He checked under car - there is no oil puddles. I haven't seen 1 oil puddle the entire time I've owned her so apparently it was definitely burning off , not leaking out.

Asked him to pull the EGV valve and check that. Mech said he can't pull the EGV valve without pulling apart the whole engine but he can "look" at it and let me know tomorrow. He also said the EGV by itself couldnt cause 5 qts of oil to disappear in a single night - there had to be something else going on.

Mentioned the O2 sensor being bad and he agreed that it couldnt have been that.

Now the mech is getting impatient for me to write him a check for new engine. But I told him I don't want to replace engine without isolating the variables and figuring out WHAT blew out in my current engine. I sure don't wanna repeat the same mistake with engine #2!

Mech said that without pulling engine apart, sending stuff to a lab, and then getting back results we will probly "never know" what caused it. <???>

My best guess is that the PCV failed closed. Then the resulting increase in crankcase pressure overcame the drain thru of the oil, via the notorious Isuzu design deficiency of the oil ring. This would result in rapid burning of oiling. But wouldn't there have been TONS of smoke billowing off from under my hood?

I wanted mech to check for carbon-ed up piston ring, to prove my theory here, but he said can't do that without engine running (or without pulling existing engine apart).

[Joe_Black]

My best guess is that the PCV failed closed. Then the resulting increase in crankcase pressure overcame the drain thru of the oil, via the notorious Isuzu design deficiency of the oil ring. This would result in rapid burning of oiling. But wouldn't there have been TONS of smoke billowing off from under my hood?

I'm leaning towards finding another mechanic that's more interested in telling you the truth rather than wondering how deep your pockets are.

Did you look at the coolant yourself? Plus, the EGR valve (EGV) is right on top of the engine and takes just a few minutes to disassemble. And notorious Isuzu oil ring deficiency?!?!? Ummm, no. First, there have been few, like in sub-1% percent of production range, failures of Isuzu produced engines. Especially the 6VE1. Second, if it were "notorious" there'd be either a Federal or OEM recall, of which Isuzu hasn't ever had on anything that wasn't built by GM.

GRRRRR! This kind of "customer service" irritates me from greedy mechanics.

[Jolly Roger VX'er]

http://www.powerpro2000.com/lb_isuzu_about.htm.

I don't know anything about these guys....just thought I would post in case there's any interest