Plastic in oil pan?
#1
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Thread Starter
Plastic in oil pan?
I pulled the oil pan on the 4runner today to take care of a leak. Ipon pulling it I found a bunch of either plastic or Teflon. I was worried about it being metal chunks at first but after spraying them down with brake clean they definitely aren't metal.
My question is does anybody know what this could be from in a 5vz. I put the pan on about 10k ago and they certainly weren't there when I did that. There's quite a bit in there. Couldn't have been something I dropped in the oil fill. I surely I would have noticed something that large. I've been through about 6 oil changes since then using Napa gold oil fters and Napa synthetic blend oil. The truck runs great and hasn't made any new noises. There is a valve tick that it has had since I bought the motor. No concerning chunks were in the old pan.
Compression was about 180 on a six when I put the motor in. I'll do another test once I get oil in it again but I'm pretty sure it'll check good again. It's never had any compression related power problems nor has it ever smoked.
My question is does anybody know what this could be from in a 5vz. I put the pan on about 10k ago and they certainly weren't there when I did that. There's quite a bit in there. Couldn't have been something I dropped in the oil fill. I surely I would have noticed something that large. I've been through about 6 oil changes since then using Napa gold oil fters and Napa synthetic blend oil. The truck runs great and hasn't made any new noises. There is a valve tick that it has had since I bought the motor. No concerning chunks were in the old pan.
Compression was about 180 on a six when I put the motor in. I'll do another test once I get oil in it again but I'm pretty sure it'll check good again. It's never had any compression related power problems nor has it ever smoked.
#6
Registered User
Thread Starter
That's kinda what in thinking. I'm wondering if I managed to get a bad one. I was hoping there was some 5vz expert out there that would know of any plastic components within the oil system. I'm probably gonna cut open one of those oil filters and see what's inside.
#7
i know of 2 systems in oil filters that may have plastic.
The anti syphon valve on the outlet (inner hole) side of the filter (rarely exists) and
The anti Drain Back valve on the inlet side (outer ring).
I dont beleive either have any plastic, but more a rubbery flap for the anti drain back valve (in almost every oil filter) and mostly steel in the Anti syphon valve (only in some inverted mount oil filters).
I think you can rule out the oil filter as the source.
perhaps the spark plug tube seals dried out and fell into the rocker area, and donw into the sump?
Could be cunks of dried up gasket from either the oilpan or rocker cover?
The anti syphon valve on the outlet (inner hole) side of the filter (rarely exists) and
The anti Drain Back valve on the inlet side (outer ring).
I dont beleive either have any plastic, but more a rubbery flap for the anti drain back valve (in almost every oil filter) and mostly steel in the Anti syphon valve (only in some inverted mount oil filters).
I think you can rule out the oil filter as the source.
perhaps the spark plug tube seals dried out and fell into the rocker area, and donw into the sump?
Could be cunks of dried up gasket from either the oilpan or rocker cover?
Last edited by Thommo Thompson; 08-26-2018 at 09:33 PM.
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#8
Registered User
That crossed my mind too.
Rubber...now that you mention it....tends to get hard and brittle from oil contamination. So that opens up the suspect list to any seal or o-ring...though plastic isnt quite off the hook. So basically checking around for oil leaks might be a lead.
Arent the oil filters upside down at an angle? Trying to remember. Maybe a foreign object found its way inadvertently as the filter was either being removed or installed...just a distant guess.
Or traces of the pan gasket?
Rubber...now that you mention it....tends to get hard and brittle from oil contamination. So that opens up the suspect list to any seal or o-ring...though plastic isnt quite off the hook. So basically checking around for oil leaks might be a lead.
Arent the oil filters upside down at an angle? Trying to remember. Maybe a foreign object found its way inadvertently as the filter was either being removed or installed...just a distant guess.
Or traces of the pan gasket?
#9
Registered User
Are you sure its plastic and not dried up old baked sludge that got dislodged from the top end after being put back into use with fresh oil, I see no shapes, just random chunks, you mentioned you installed this motor, how long was it sitting, have you looked under the valve covers yet to see if it had the sludge issue. Any parts missing from your oil cap, perhaps 1/2 of the PVC Grommet?..
#10
Registered User
Thread Starter
Are you sure its plastic and not dried up old baked sludge that got dislodged from the top end after being put back into use with fresh oil, I see no shapes, just random chunks, you mentioned you installed this motor, how long was it sitting, have you looked under the valve covers yet to see if it had the sludge issue. Any parts missing from your oil cap, perhaps 1/2 of the PVC Grommet?..
This is how the heads looked when I put the motor in.
That crossed my mind too.
Rubber...now that you mention it....tends to get hard and brittle from oil contamination. So that opens up the suspect list to any seal or o-ring...though plastic isnt quite off the hook. So basically checking around for oil leaks might be a lead.
Arent the oil filters upside down at an angle? Trying to remember. Maybe a foreign object found its way inadvertently as the filter was either being removed or installed...just a distant guess.
Or traces of the pan gasket?
Rubber...now that you mention it....tends to get hard and brittle from oil contamination. So that opens up the suspect list to any seal or o-ring...though plastic isnt quite off the hook. So basically checking around for oil leaks might be a lead.
Arent the oil filters upside down at an angle? Trying to remember. Maybe a foreign object found its way inadvertently as the filter was either being removed or installed...just a distant guess.
Or traces of the pan gasket?
Last edited by Kolton5543; 08-27-2018 at 09:24 PM.
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