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I have been trying to pinpoint an oil leak issue...and am out of ideas.
My '79 F150 4x4 has a 400 V8, nothing special, stock type rebuild with around 70k.
I was dealing with a powersteering hose that I replaced. I powerwashed the underside of the truck after the hose blew out a few months back.
Now, ever since I did my last oil change this thing leaks oil. and I am talking like it seems like a rear main seal it out.
In looking, the oil appears to be coming off the filter. I swapped filters two weeks ago, thinking that cured it, maybe a bad seal. I cleaned the block off, the oring was not stuck to the block, I oiled the seal slightly as how I have always done, and this thing is leaking bad. it I sit at idle in the driveway, nothing, no running dripping oil.
The Mechanical fuel pump is dripping in oil.
The entire driver's side is covered in oil spray from driving.
Checked the factory oil cooler, solid, not leaking.
Check valve covers, little to no leaks, nothing that indicates it coming from up top.
I have noticed on random occasions if I step into it, after driving the truck for a total of 4 hours, it would randomly smoke as oil was hitting the exhause and throwing a light cloud. Same around town. Not all the time, but ti's a random deal.
Short of pulling the engine, I am a bit lost.
The oil pump from the rebuild paperwork I have is a standard, oil pressure is what I call normal for this truck, same as it has been for 20 years since I started driving it as a teenager.
I looked at the NPT fitting in the oil port above the filter, not leaking there.
I am not spinning it hard, I'd be surprised if it ever saw 4k rpm.
Could there be some possible chance I am getitng a freak spike in the filter and it's spraying out of the seal?
I am only running motorcraft filters, always have.
I looked at the front of the pan, the seal has minor leakage, but it's pretty much dry there. Pan rails are a little wet, but I thinking because of the oil coming off the filter?
Just need some help here.
Thanks
Andy
My '79 F150 4x4 has a 400 V8, nothing special, stock type rebuild with around 70k.
I was dealing with a powersteering hose that I replaced. I powerwashed the underside of the truck after the hose blew out a few months back.
Now, ever since I did my last oil change this thing leaks oil. and I am talking like it seems like a rear main seal it out.
In looking, the oil appears to be coming off the filter. I swapped filters two weeks ago, thinking that cured it, maybe a bad seal. I cleaned the block off, the oring was not stuck to the block, I oiled the seal slightly as how I have always done, and this thing is leaking bad. it I sit at idle in the driveway, nothing, no running dripping oil.
The Mechanical fuel pump is dripping in oil.
The entire driver's side is covered in oil spray from driving.
Checked the factory oil cooler, solid, not leaking.
Check valve covers, little to no leaks, nothing that indicates it coming from up top.
I have noticed on random occasions if I step into it, after driving the truck for a total of 4 hours, it would randomly smoke as oil was hitting the exhause and throwing a light cloud. Same around town. Not all the time, but ti's a random deal.
Short of pulling the engine, I am a bit lost.
The oil pump from the rebuild paperwork I have is a standard, oil pressure is what I call normal for this truck, same as it has been for 20 years since I started driving it as a teenager.
I looked at the NPT fitting in the oil port above the filter, not leaking there.
I am not spinning it hard, I'd be surprised if it ever saw 4k rpm.
Could there be some possible chance I am getitng a freak spike in the filter and it's spraying out of the seal?
I am only running motorcraft filters, always have.
I looked at the front of the pan, the seal has minor leakage, but it's pretty much dry there. Pan rails are a little wet, but I thinking because of the oil coming off the filter?
Just need some help here.
Thanks
Andy
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