Burning oil
Thread Starter
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Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Burning oil
Hey guys I got a head scratcher here. 04 4.0 5 speed 155k miles
Over last winter I noticed clouds of smoke at start up. No CEL.
The air filter and tube was SOAKED with oil. I changed PCV, changed air filter and cleaned out tube.
No more smoke at start up.
Then this summer I was getting some smoke at startup and sometimes it would smoke a 1/2 mile down the road. It was not consistent at all but I was using enough oil it would foul the plugs and cause a misfire.
So I got a "factory reman" (as I was told from the local ford dealer who sells alot of whole parts), it got a new intake(recommended by the engine builder), every sensor on the engine, PCV, thermostat housing, JBA headers,etc, etc, etc
First oil change was at 1000 miles, no problems.
Then over the the next 3000 miles it used 1 quart of oil every 1000 miles.
I went to shop that installed and they got ahold of warranty company.
1. had them pull plugs to verify burning oil(plugs were burning with oil deposits)
2. had them pull PVC valve and hose(both were dry)
3 had them pull pan and look for debris(small pieces of hard plastic and rubber)
4 had them pull the engine for factory inspection(getting shipped out today)
Any suggestion as to what could be the problem? I used to work in the GM garage years ago but that was well before these SOHC engines were even out.
I am baffled as well is the shop
Over last winter I noticed clouds of smoke at start up. No CEL.
The air filter and tube was SOAKED with oil. I changed PCV, changed air filter and cleaned out tube.
No more smoke at start up.
Then this summer I was getting some smoke at startup and sometimes it would smoke a 1/2 mile down the road. It was not consistent at all but I was using enough oil it would foul the plugs and cause a misfire.
So I got a "factory reman" (as I was told from the local ford dealer who sells alot of whole parts), it got a new intake(recommended by the engine builder), every sensor on the engine, PCV, thermostat housing, JBA headers,etc, etc, etc
First oil change was at 1000 miles, no problems.
Then over the the next 3000 miles it used 1 quart of oil every 1000 miles.
I went to shop that installed and they got ahold of warranty company.
1. had them pull plugs to verify burning oil(plugs were burning with oil deposits)
2. had them pull PVC valve and hose(both were dry)
3 had them pull pan and look for debris(small pieces of hard plastic and rubber)
4 had them pull the engine for factory inspection(getting shipped out today)
Any suggestion as to what could be the problem? I used to work in the GM garage years ago but that was well before these SOHC engines were even out.
I am baffled as well is the shop
Thread Starter
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Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Well they warranted the engine but never said what they found
at 500 miles I changed oil. All looked good
Today(1200 miles later) I started the truck and a big cloud of blue smoke. Checked oil and it is down 1 quart. WTF is going on
at 500 miles I changed oil. All looked good
Today(1200 miles later) I started the truck and a big cloud of blue smoke. Checked oil and it is down 1 quart. WTF is going on
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
No replies yet, so will see if I can get things started. Replaced reman engine with 500 miles on it, down a qt & puffing Blue smoke on a cold morning start. Blue smoke sounds like oil in the cylinders again & if so, question is were is it coming from? With only 500 miles it could be more than one thing, like the piston rings not yet seated, faulty valve guides, stem seals, or installation, faulty PCV valve, wrong viscosity or service grade engine oil (the 4.0L is specified for 5W-30), initial thoughts that come to mind.
Does the crankcase pass Fords blow-by crankcase pressure test ? If your concerned. have it tested & have the engine installer put all this info on the record. Some beginning thoughts for consideration.
Does the crankcase pass Fords blow-by crankcase pressure test ? If your concerned. have it tested & have the engine installer put all this info on the record. Some beginning thoughts for consideration.
2nd Gear
Joined: Jan 2021
Posts: 2
Likes: 0
No replies yet, so will see if I can get things started. Replaced reman engine with 500 miles on it, down a qt & puffing Blue smoke on a cold morning start. Blue smoke sounds like oil in the cylinders again & if so, question is were is it coming from? With only 500 miles it could be more than one thing, like the piston rings not yet seated, faulty valve guides, stem seals, or installation, faulty PCV valve, wrong viscosity or service grade engine oil (the 4.0L is specified for 5W-30), initial thoughts that come to mind.
Does the crankcase pass Fords blow-by crankcase pressurization test ? If your concerned. have it tested & have the engine installer put all this info on the record. Some beginning thoughts for consideration.
Does the crankcase pass Fords blow-by crankcase pressurization test ? If your concerned. have it tested & have the engine installer put all this info on the record. Some beginning thoughts for consideration.
Maybe I didn't explain it right.
@ 169,198 The engine was replace with a reman, along with new intake, every sensor on the engine, PCV, thermostat housing, JBA headers,etc, etc, etc
@ 169,745 oil/filter was changed
@ 170,525 down 1 quart
@ 171,645 down 1 quart
@ 172,777 oil/filter changed, down 1 quart and noticed blue smoke @ start up
@ 173,334 the engine was replace AGAIN
@ 173,880 oil/filter was changed
@ 174,910 down 1 quart and noticed blue smoke @ start up
Crankcase pressurization test?
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
It was me that said it wrong, it should be, pressure test. They attach a pressure gauge at the oil fill cap & measure what amounts to blow by, that's pressurizing the crankcase. Ford has a range but I don't know what it is. Someone posted it on this forum but its been a few years. If the current engine is using oil & puffs blue smoke on a start, then with the current posted info, my list of suspects is what currently comes to mind & seems to me the crankcase pressure check thats easy to get at & do, (if you have a modified salvage yard cap, drilled through, with a pressure gauge attached) as that might help focus the trouble shoot.
Thread Starter
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Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Ah ok. I just talked to an old friend that used to be a Drivability tech at ford.
He said look for blue smoke with decelerating down hill. So on my way home tomorrow I am going to look for that in the daylight.
He said if it is Smoking then to cap off the PCV and the intake where it draws to and drive for a couple days. Then see if it is still doing it. if it is, it is valve guid seals and the engine reman is Junk
He said look for blue smoke with decelerating down hill. So on my way home tomorrow I am going to look for that in the daylight.
He said if it is Smoking then to cap off the PCV and the intake where it draws to and drive for a couple days. Then see if it is still doing it. if it is, it is valve guid seals and the engine reman is Junk
Trending Topics
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
Downhill Decelerating with the throttle closed puts Max Vacuum on the intake side of the engine, so if anything is wimpy, faulty, not done right with the valve stem seals & or valve guides, or rings or cylinder bore or bore crosshatch it should bypass enough oil to send smoke signals!!!
Were both of these Ford, reman engines???
Were both of these Ford, reman engines???
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Thread Starter
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Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Downhill Decelerating with the throttle closed puts Max Vacuum on the intake side of the engine, so if anything is wimpy, faulty, not done right with the valve stem seals & or valve guides, or rings or cylinder bore or bore crosshatch it should bypass enough oil to send smoke signals!!!
Were both of these Ford, reman engines???
Were both of these Ford, reman engines???
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
Ok thanks for clearing that up, I felt that didn't sound like Ford quality. Our QA manager worked at a company that made Ford & others electronic dashboards & he said they Dreaded Ford QA preship audits because they were Way more persnickety!!!
Hotshot
Joined: Jun 2015
Posts: 12,872
Likes: 2,445
If the cylinders are good then it almost has to be the pcv or valve seals. It doesn’t sound like the reman company has very good quality control for two engines to be burning that much oil. Were they both long blocks?
Thread Starter
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Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Yes, both long blocks. I just sold the truck for $5k, I was sick of dealing with it. I took at 10-12k hit
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