Blown UP 2 7.3 in 65k miles - Diesel Forum - TheDieselStop.com
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99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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Old 11-12-2008, 08:50 AM   #1 (permalink)
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Blown UP 2 7.3 in 65k miles

Piece of crap 7.3.....these are suppose to be bullet prof.......

I just had truck towed in for the second time in 6 years and both times it was from a blown engine. The truck is on 02 7.3 CC dually.

Any one want to BUY a 02 CC dually Lariate Fully loaded????

Anyone know where to get a juck yard motor to put in this thing??

Im located in San Diego California.
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Old 11-12-2008, 09:43 AM   #2 (permalink)
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Unless you're putting an insane amount of horsepower on it, these things are pretty much bullet proof.
If you've put a chip or programmer on it, without adding the gages, then you might've over-boosted it or ran it too hot.
The 2001-2003 7.3 l have PMR (Powder coated rods) which make them less desirable for high horsepower than the 99-2000 cast rods.
There's a lot of variables that you haven't mentioned, like maintenance, filter changes, type of oil you use, what you were doing/pulling when the engines went, other mods that may or may not have been done to the truck, whether it was automagic or 6 speed, your driving style.
Why not find a good Ford diesel mechanic that you can trust that knows how to set these engines up, instead of putting in a 'junk yard motor'? just my .02 cents worth

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Old 11-12-2008, 10:10 AM   #3 (permalink)
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Thousands of people on here without any major issues regerding their engines but you manage to blow two up in six years...yeah, must be POS engines.

Like short_stuff said, perhaps its your driving style or lack of maintenance.

Sure there is a possibility that you got two engines that blew up for no reason. Just very unlikely.

The second engine wasnt a junk yard engine was it?
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Old 11-12-2008, 10:21 AM   #4 (permalink)
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The truck was maintained perfectly....This truck was my baby.
Delo 400 changed every 5k filter every 5 k. The truck is all stock with the exception of 4 in exhaust.....and yes I did have gauges....watched them
non stop!!

Those miles are pretty much 80% towing miles....15k fifth wheel. I have a
auto tranny and it has been great...no problems there.

The second engine was done under warrenty by a local ford dealer...it was
a fatory short block.

Last edited by Cabzbad; 11-12-2008 at 10:21 AM. Reason: spelling
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Old 11-12-2008, 10:24 AM   #5 (permalink)
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By the way im out of warranty because of time.....so I have to pay


Anyone know of a good diesel guy in so cal that is not a ford dealer???
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Old 11-12-2008, 10:58 AM   #6 (permalink)
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What exactly do you mean by a blown engine ?
How many miles on each engine before "blowup" ?
Did a rod go thru the side of the engine ?
Did the rod bearings burn up and clatter ?
Did the engine run hot and seize up while towing ?
What coolant are you using ? SCA additives to prevent cavitation ?

Man - I ran 250 miles on gasoline over mountains in Alaska with my "99" 7.3 PSD, CLATTER - BANG and alot of smoke, put the right diesel fuel in it and as of yet no problems . LOL Ran 6000 miles since my screw up. 24 gals. gas in a 38 gal. tank.

BUILT FORD TOUGH 145000 ON THE CLOCK.
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Old 11-12-2008, 12:33 PM   #7 (permalink)
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Motor number 1 had 25k.....all bearing caps spilt, bearings sliding out....It didnt actually blow up....just made a lot of noise...thats why I took it in to check out. They replaced it. Motor number 2 has 40k......its not apart yet but Ford is telling me its as at least one bad cylinder.....maybe more but wont know untill they get into it.

Both motors ran.....just not well. Second barely runs. Stock coolant and it never got hot.
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Old 11-12-2008, 02:39 PM   #8 (permalink)
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Quote:
Originally Posted by Cabzbad View Post
Motor number 1 had 25k.....all bearing caps spilt, bearings sliding out....It didnt actually blow up....just made a lot of noise...thats why I took it in to check out. They replaced it. Motor number 2 has 40k......its not apart yet but Ford is telling me its as at least one bad cylinder.....maybe more but wont know untill they get into it.

Both motors ran.....just not well. Second barely runs. Stock coolant and it never got hot.
I WOULD GET A SECOND OPINION
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Old 11-12-2008, 02:46 PM   #9 (permalink)
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Quote:
Originally Posted by short_stuff View Post
Unless you're putting an insane amount of horsepower on it, these things are pretty much bullet proof.
If you've put a chip or programmer on it, without adding the gages, then you might've over-boosted it or ran it too hot.
The 2001-2003 7.3 l have PMR (Powder coated rods) which make them less desirable for high horsepower than the 99-2000 cast rods.
There's a lot of variables that you haven't mentioned, like maintenance, filter changes, type of oil you use, what you were doing/pulling when the engines went, other mods that may or may not have been done to the truck, whether it was automagic or 6 speed, your driving style.
Why not find a good Ford diesel mechanic that you can trust that knows how to set these engines up, instead of putting in a 'junk yard motor'? just my .02 cents worth

short_stuff
01-03 have powdered metal rods, and the earlier had forged.........
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Old 11-12-2008, 02:58 PM   #10 (permalink)
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I'd like to know the actual failure. "Dead cylinder" doesn't tell us much.
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Old 11-12-2008, 03:18 PM   #11 (permalink)
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I know it doesnt tell us much but untill they really get into it that is there educated guess.....I have not given them the ok to get into it. The work on these motors gets real expensive real quick. I am just trying to get the best price on the worst case....which would be replaceing the short block.
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Old 11-12-2008, 03:19 PM   #12 (permalink)
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Definitely get a second opinion
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Old 11-12-2008, 07:47 PM   #13 (permalink)
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Yea, I would too. I hate to say it but your definitely in the MINORITY on this one. I have seldom heard of a stock, or very minorly beefed 7.3 "Blowing" up... it just don't happen very often. You say all your bearings spun on the first one? Maybe 5k miles was too far on your oil change interval?

Quote:
Those miles are pretty much 80% towing miles....15k fifth wheel. I have a
auto tranny and it has been great...no problems there.
I would call that SEVERE duty, which calls for 3,000 mile intervals... would 2k miles make that big of a difference? Who knows, if you towed often through the smokies, or rockies, then very possibly so......

I just would have to say, the 7.3 is not a POS by any stretch of the imagination,, there is about a million of these on the road in medium duty trucks, school buses, and PSD's, since 1994,,,,,
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Old 11-12-2008, 08:04 PM   #14 (permalink)
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I can see bad luck having one engine fail that soon, but a 2nd failure is definitely a strange one. You do have some pretty good hills in sunny CA. What kind of EGT's are you running pulling 15k up those hills? Ever run into a situation where you have to floor the go pedal going up the hill and hold it to the floor, but the truck still slows down?

What air filter are you using, and have you checked the air filter box and intake hose for any cracks or breaks that might have dusted the engine?

I don't have any hills around me, but my truck will still pull 20k down the freeway with 271k on the odometer.
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Old 11-12-2008, 10:32 PM   #15 (permalink)
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The bearing caps split ! WOW Never heard of such a thing . Bearings sliding out ! WOW They can't do that, there trapped in by the rods, rod bearings are trapped by the mains . Maybe you mean spun . Sure would like to know what oil pressure you were running at . Did the Ford garage check out the injectors ? A buddy of mine just had 2 go bad that made the engine sound like it was coming apart , his is an "02". Definitly get a second opinion. Or make sure they check the injectors.

"Those miles are pretty much 80% towing miles....15k fifth wheel. I have a
auto tranny and it has been great...no problems there."

Man those are sever duty miles.

Towed this 700 miles with 2 bad injectors that diluted the oil by 65% , was a new reman engine with only 1500 miles on it . Tear down showed only .001 wear on the bearings . Towing truck is a "90" 7.3 IDI . And that was thru the Carolina's and West Virgina mountains, smoked like hell but never damaged the engine .

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Last edited by Bill1013; 11-12-2008 at 10:39 PM.
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