4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

Engine Oil Leaking?

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Old Oct 30, 2021
  #1  
jaydr2x's Avatar
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From: surrey bc
Engine Oil Leaking?

I'm not sure where the leak is coming from... The oil coming out is very dark. I did an oil change not 1 month ago. it's synthetic. I don't have alot of engine or ford ranger background. I'm wondering what it could it be.. I did some research that it could be a rear main seal? Would that be expensive to repair? I'm located in Canada. The vehicle is a 2wd ford ranger 2004 about 205XXX KM






 
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Old Oct 30, 2021
  #2  
Georgeandkira's Avatar
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From: Hackensack, Nj
It's always hard to tell from pictures. Is that the 3.0l?
Folks who know specific engines etc. can more accurately guess.
You could check the valve cover bolts for tightness. You'd see a leak if there was one there.
Clogged PCV systems can create crankcase pressure. The engine can't suck out the fumes.

If you have access to a work place you can put the truck on ramps and hit the oily parts with a degreaser.
Rinse it off then watch literally every 5 minutes of operation for evidence of oil leaking.
It'll be a dirty, drippy keep moving with a flashlight job. If you're lucky, you'll catch the 'leak in progress'.
 
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Old Oct 30, 2021
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jaydr2x's Avatar
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From: surrey bc
Originally Posted by Georgeandkira
It's always hard to tell from pictures. Is that the 3.0l?
Folks who know specific engines etc. can more accurately guess.
You could check the valve cover bolts for tightness. You'd see a leak if there was one there.
Clogged PCV systems can create crankcase pressure. The engine can't suck out the fumes.

If you have access to a work place you can put the truck on ramps and hit the oily parts with a degreaser.
Rinse it off then watch literally every 5 minutes of operation for evidence of oil leaking.
It'll be a dirty, drippy keep moving with a flashlight job. If you're lucky, you'll catch the 'leak in progress'.

Sorry I think I posted in wrong category. The video only shows drivers side more leak and passenger side no leaks. Is it safe to pressure wash underneath? From what u can see the flywheel looks dry. Doesn't look like its the rear engine seal.

Would it be typical for the oil pan bolts to loosen?

I bought this back in June. First time owning a ford ranger. Pick up.
 
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Old Oct 30, 2021
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Georgeandkira's Avatar
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From: Hackensack, Nj
Anything can loosen. Check / tighten all pan bolts.
Posters ask the mods to move things...but it is the weekend.
 

Last edited by Georgeandkira; Oct 30, 2021 at 08:53 AM.
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Old Oct 30, 2021
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RonD's Avatar
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From: Vancouver, BC
Yes, disconnect 1 battery cable, then pressure wash underside and if possible spray some Dawn mixed with water, or degreaser, all over the underside and wash again

It could be power steering fluid, its darker color ATF(red), so make sure to clean the area around power steering pump, you can clean(spray) that area from above as well
 
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