Blow by question - Ford Powerstroke Diesel Forum

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post #1 of 16 Old 12-25-2012, 04:57 PM Thread Starter
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Blow by question

so ive got this project truck.. nothing special though, just need a work truck.

The motor seems to have a lot of blow by.. serious puffage from the oil filler. anyway i was wondering what to do about it? if one was to attempt to fix this problem, whats the cheapest way to do so? Ive always heard to just get a new engine but im weary about that because ive never had much luck and it never turns out to be cheap. preciate it guys. happy holidays

2002 F-250 POWERSTROKE 4X4

BANKS 4" Turbo-Back w/ Power Elbow
Converted from 3/4 to 1TON
Napa 6637 DIY Intake
6.0 Trans. Cooler
Dipricol Gauges
Warn Hubs
TW 6 Pos.

And Some Other Boring Stuff

THANK GOD FOR YOUR BLESSINGS EVERYDAY
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post #2 of 16 Old 12-26-2012, 05:42 AM
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Is is blow by or are you leaking something that is burning off by the oil filter?


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post #3 of 16 Old 12-26-2012, 08:57 AM Thread Starter
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doesnt seem to have any leaks.. at least not any severe ones. Im talking about the smoke that puffs out of the oil FILLER on top of the engine. it also blows a little blue smoke out of the tailpipe.

2002 F-250 POWERSTROKE 4X4

BANKS 4" Turbo-Back w/ Power Elbow
Converted from 3/4 to 1TON
Napa 6637 DIY Intake
6.0 Trans. Cooler
Dipricol Gauges
Warn Hubs
TW 6 Pos.

And Some Other Boring Stuff

THANK GOD FOR YOUR BLESSINGS EVERYDAY
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post #4 of 16 Old 12-26-2012, 12:15 PM
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Is it a 6.0? The 7.3 dosent have a topside oil filter. The tailpipe smoke is blow by, could be coming from a couple places. Rings or valve seals are the most likely to cause blow by. You could preform a cylinder leakage test to check the rings but you would have to disassemble the heads to check the valve seals.


Forged Rods
ARP Head & Main Studs
Port, Polish, 3 way valve job
Beans 160cc Single Shot Injectors
DI Regulated Return/Oil X Over
DieselSite Coolant Filter
TS 6 position (Beans Tunes)
AFE stage 2 dry
Labonte Stage 3 Methanol Injection
Banks wheels, exhaust housing, wastegate, Intercooler
5in Turbo back Exhaust
Custom Built Trans w/ Billet Shafts
Mag-Hytec Trans Pan/Diff Covers
6.0 Trans Cooler
SnowDogg EX90 plow
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post #5 of 16 Old 12-26-2012, 02:28 PM
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I was wondering about this too. My 7.3 doesn't appear to have that much pressure coming out from the oil spout, but there is a noticeable smoke if you take the cap off to feel the pressure. Is this normal?
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post #6 of 16 Old 12-26-2012, 02:54 PM
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Quote:
Originally Posted by Jrz13 View Post
Is it a 6.0? The 7.3 dosent have a topside oil filter.
He said FILLER, not filter.

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post #7 of 16 Old 12-26-2012, 07:02 PM Thread Starter
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oh its a 7.3.. have had my fair share of bad luck with the 6leakers haha. so now that we've cleared up all confusion. what should i do???

2002 F-250 POWERSTROKE 4X4

BANKS 4" Turbo-Back w/ Power Elbow
Converted from 3/4 to 1TON
Napa 6637 DIY Intake
6.0 Trans. Cooler
Dipricol Gauges
Warn Hubs
TW 6 Pos.

And Some Other Boring Stuff

THANK GOD FOR YOUR BLESSINGS EVERYDAY
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post #8 of 16 Old 12-26-2012, 08:45 PM
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Blow-by is a mechanical problem. There is really only one way to fix it and I am sure you are aware of the way it has to be done. No easy way to get around it. How many miles are on the truck?

You may want to actually check compression before doing a rebuild though. Just so you are not wasting your time.

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post #9 of 16 Old 12-26-2012, 08:47 PM
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Quote:
Originally Posted by Pipewrench View Post
I was wondering about this too. My 7.3 doesn't appear to have that much pressure coming out from the oil spout, but there is a noticeable smoke if you take the cap off to feel the pressure. Is this normal?
Yes, it is normal to see the oil fumes. Lay the cap upside down on the filler neck and see if it vibrates off or blows off. If it vibrates off then you should not worry, if it blows off you have excessive blow-by.

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post #10 of 16 Old 12-26-2012, 11:02 PM Thread Starter
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thanks guys, im going to have a check done on it. like i said its a work truck so if its not a serious issue ill just drive it.

2002 F-250 POWERSTROKE 4X4

BANKS 4" Turbo-Back w/ Power Elbow
Converted from 3/4 to 1TON
Napa 6637 DIY Intake
6.0 Trans. Cooler
Dipricol Gauges
Warn Hubs
TW 6 Pos.

And Some Other Boring Stuff

THANK GOD FOR YOUR BLESSINGS EVERYDAY
lcducote is offline  
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