excessive blow-by
Lead Driver
Joined: May 2007
Posts: 8,608
Likes: 13
From: Belair md
that doesnt look too bad, there will always be blow by on these trucks, par for the course. does the truck run ok? you can run a crank case pressure test on it to see if its excessive. you need a guage that measures inches of water and an adapter to thread onto the fill tube hole. i cant recall the size of the hole in the adapter but i can go measure it if you want to run the test and make your own adapter.
Postmaster
Joined: Feb 2004
Posts: 3,266
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From: Levittown
X2
Really cannot see much in the pict.
Joe
The old Swamp Donkey test is dam close to the failed water test.
Just lay the cap over the fill hole. Motor at idle hot will blow the cap
off the oil fill if excessive. If not it will just lay on the oil fill.
Bill
Really cannot see much in the pict.
Joe
The old Swamp Donkey test is dam close to the failed water test.
Just lay the cap over the fill hole. Motor at idle hot will blow the cap
off the oil fill if excessive. If not it will just lay on the oil fill.
Bill
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Junior User
Joined: Dec 2008
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that doesnt look too bad, there will always be blow by on these trucks, par for the course. does the truck run ok? you can run a crank case pressure test on it to see if its excessive. you need a guage that measures inches of water and an adapter to thread onto the fill tube hole. i cant recall the size of the hole in the adapter but i can go measure it if you want to run the test and make your own adapter.
Im trying to figure out why my truck still uses so much oil, How ever not as much as before replaced the injector o-rings I just came inside after removing the fuel filter, i check for oil in it but it seems that the oil going to the fuel tank got fixed with the inj o-r replaced, before,i replaced'm it used to use 1.5 gallons of oil for every 40 miles------now with the new inj o/r she run 75 miles and uses only one gallon sh its still alot ---------- any idea what could be causing the oil loss?
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Postmaster
Joined: Feb 2004
Posts: 3,266
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From: Levittown
Worn cyl, score in bore, worn/broken rings, crack/hole in piston ect.
Its cyl pressure making its way into the crankcase.
You could have an internal oil leak in some injectors.
It will cause oil loss.
Bill
Its cyl pressure making its way into the crankcase.
You could have an internal oil leak in some injectors.
It will cause oil loss.
Bill
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is there a way to do a test to figure out any of the two? like i said before i removed the fuel filter and didn't see any oil at all, and before i replaced the inj o-r it was a mess in it, so if one of the inj has a internal leak would the oil go back into the fuel tank again or not?
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Postmaster
Joined: Feb 2004
Posts: 3,266
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From: Levittown
A compression test will show condition of the cyl's.
If oil is leaking by the injector piston it will end up
in the cyl and be burnt. The check ball in the injector
should hold the oil from going into the fuel system.
Oil loss can also be from a turbo seal leaking.
Did you check your poppet air gap on the injectors
before doing the o-rings? Do you have access to
a buzz and cyl cont test?
Inj Link
http://www.intellidog.com/dieselmann/injector.htm
Bill
If oil is leaking by the injector piston it will end up
in the cyl and be burnt. The check ball in the injector
should hold the oil from going into the fuel system.
Oil loss can also be from a turbo seal leaking.
Did you check your poppet air gap on the injectors
before doing the o-rings? Do you have access to
a buzz and cyl cont test?
Inj Link
http://www.intellidog.com/dieselmann/injector.htm
Bill
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Junior User
Joined: Dec 2008
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A compression test will show condition of the cyl's.
If oil is leaking by the injector piston it will end up
in the cyl and be burnt. The check ball in the injector
should hold the oil from going into the fuel system.
Oil loss can also be from a turbo seal leaking.
Did you check your poppet air gap on the injectors
before doing the o-rings? Do you have access to
a buzz and cyl cont test?
Bill
If oil is leaking by the injector piston it will end up
in the cyl and be burnt. The check ball in the injector
should hold the oil from going into the fuel system.
Oil loss can also be from a turbo seal leaking.
Did you check your poppet air gap on the injectors
before doing the o-rings? Do you have access to
a buzz and cyl cont test?
Bill
Thread Starter
|
Junior User
Joined: Dec 2008
Posts: 71
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truck was running when i took this picture.
it's been running strong i do plowing and she has no problem at all even when we have 8 inches on the ground. she has never smoke more than the trucks that I see around.
Lead Driver
Joined: May 2007
Posts: 8,608
Likes: 13
From: Belair md
well if it aint in the coolant and it isnt going out the tail pipe then it has to be going into the fuel tank? no ily residue in the tail pipe? how about at the exhaust backpressure valve tab where the actuator rod meets the valve itslef. if you are using/losing that much oil in a short time then it should have residue or even a drip coming from the tab