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7.3 OBS PSD 94-97 PowerStroke Discussion

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Old 09-28-2017, 05:01 AM   #1
Downtownbrown
 
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7.3 majot blowby, time for rebuild

I recently picked up a 95 f250 eclb powerstroke with 250k on it,i got excited at the price and the fact that it ran as well as it did that i completley forgot to check the blowby i havent taken the head off yet but i am ASSUMING that the #2 or #4 injector hung open and blew a hole through the piston, the blow by is a heavy puff that sings along to the miss of the motor.

I am about to start work on my dodge and i really cant afford 2 projects at once so i wanted to know if it was possible to just replace the one piston so long as the cylinder walls are in good shape? Im not looking to completly rebuild it as it just wouldnt be worth it to me since it needs a set of injectors also. Trying to do the bare minimum to have an extra truck i can drive! Any advice is greatly appreciated

Just realized after posting this there is a obs and sd section, maybe someone can move it for me?
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Last edited by Downtownbrown; 09-28-2017 at 05:04 AM.
 
Old 09-28-2017, 05:54 AM   #2
turbo2387
 
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blow by from the oil fill or the exhaust pipe. 7.3 injectors fail often. if its from the exhaust pipe chances are its just a couple crummy injectors.
 
Old 09-28-2017, 06:56 AM   #3
Downtownbrown
 
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Oil fill, it blows the cap off. I could see about posting a video on youtube for a look see?
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Old 09-28-2017, 09:54 AM   #4
Downtownbrown
 
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7.3 powerstroke blowby dead cylinder - YouTube another thing,when i had the valve cover off after the truck was shut off smoke was coming from the front most cylinder, i plan on compression checking this weekend, i guess if all other cylinders are close to spec then ill just replace this one piston? Also the only 2 injectors on the driver side that have oil coming from them are #2 and #8
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Old 09-28-2017, 10:23 AM   #5
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Sweet mother of pearl... just say it's cammed lol.
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Old 09-28-2017, 10:35 AM   #6
BigPapa
 
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I'd find somebody with an IDS and see what it tells you.

Where are you at?
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Old 09-28-2017, 10:52 AM   #7
Downtownbrown
 
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I'd find somebody with an IDS and see what it tells you.

Where are you at?
Located in blue ridge TX, IDS as in a scanner?
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Old 09-28-2017, 02:14 PM   #8
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make a thread on powerstrokearmy lots of 7.3 experts over there...
 
Old 09-28-2017, 03:44 PM   #9
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Located in blue ridge TX, IDS as in a scanner?
Yes, Factory Ford Scan Tool. It'll tell you everything you need to know and what you ate for breakfast.
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Last edited by BigPapa; 09-28-2017 at 03:45 PM.
 
Old 09-28-2017, 04:00 PM   #10
BRE
 
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7.3 majot blowby, time for rebuild

If there is no oil return out of the injectors they are junk most likely.
Get a good scan tool, do a buzz test. Throw a set of harnesses on it, and the injectors it needs. You'd be surprised how "well" it may run when all the injectors are firing.
Get ready for a disaster. 7.3's are bigger piles of chit than 6.0's.

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There really is nothing better than OEM. That goes for anything from turbos to boobs.
RIP Dex KCCO

Last edited by BRE; 09-28-2017 at 04:11 PM.
 
Old 09-28-2017, 04:14 PM   #11
95cummins5.9
 
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Quote:
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Get ready for a disaster. 7.3's are bigger piles of chit than 6.0's.

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No way.
 
Old 09-28-2017, 04:15 PM   #12
BRE
 
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No way.


I'll argue it to the death. 7.3's are most worthless piles of chit ever put in a truck next to a 6.4.


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There really is nothing better than OEM. That goes for anything from turbos to boobs.
RIP Dex KCCO
 
Old 09-28-2017, 04:52 PM   #13
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Must have not worked on many 6.0's then
 
Old 09-28-2017, 05:05 PM   #14
BRE
 
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Must have not worked on many 6.0's then


More than I can count.


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Rick
07 Dodge 3500 - Tow mirrors, silencer ring MIA, Spectra air filter.
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Originally Posted by jfaulkner View Post
There really is nothing better than OEM. That goes for anything from turbos to boobs.
RIP Dex KCCO
 
Old 09-28-2017, 05:23 PM   #15
turbo2387
 
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Same. And all the damn maxforce variants of them for the years after. Cant wait to he rid of everything that resembles a 6.0.
 
Old 09-28-2017, 05:31 PM   #16
BRE
 
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When I was in the shop before I went to trucking again, the 6.7's were the best ford engine I've felt with.
The rest of them were complete piles.


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Rick
07 Dodge 3500 - Tow mirrors, silencer ring MIA, Spectra air filter.
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Originally Posted by jfaulkner View Post
There really is nothing better than OEM. That goes for anything from turbos to boobs.
RIP Dex KCCO
 
Old 09-28-2017, 05:39 PM   #17
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7.3s are worse than a 6.0? That's a first to me! And I just finished a night mare 7.3 build this spring!
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Old 09-28-2017, 06:00 PM   #18
BRE
 
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7.3s are worse than a 6.0? That's a first to me! And I just finished a night mare 7.3 build this spring!


Personal opinion obviously as every redneck backwoods diesel know it all thinks it's still the greatest engine ever built.
I have a severe hatred for them.


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Rick
07 Dodge 3500 - Tow mirrors, silencer ring MIA, Spectra air filter.
Quote:
Originally Posted by jfaulkner View Post
There really is nothing better than OEM. That goes for anything from turbos to boobs.
RIP Dex KCCO
 
Old 09-28-2017, 06:07 PM   #19
turbo2387
 
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To each their own. But when 1 in 20 are a 7.3 coming ito the shop compared to 19 6.0's there is a clear winner and looser
 
Old 09-28-2017, 06:21 PM   #20
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I rarely disagree with you Rick, but I have to on this one.
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