Ideas on a mystery oil leak?
Thread Starter
Honda-Tech Member
Joined: Mar 2003
Posts: 5,661
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From: here n there n everywhere
Ok I have tiny bits of oil leaking from SOMEWHERE. I am not sure where it is coming from but the way i know its leaking is there are droplets of oil forming on the front of the oil pan and on the oil pan drain bolt....
I have fittings in the back of the block for pcv, i think the right one may be leaking down the back of the block and onto the oil pan? Its a really small amount of oil, not even enough to drip when the car is parked..
I tightened all the oil pan gaskets and even got a new heavier duty screw clamp for the pcv hose but there is still oil droplets forming...
Any Idea where it could be leaking from? Seems to be coming from the right side of the engine (non-tranny side)...
Its not a major leak NOW, but we all now how that goes
thanks for any insight, mainly looking for gaskets in that area of the engine that are known to leak...
thanks
I have fittings in the back of the block for pcv, i think the right one may be leaking down the back of the block and onto the oil pan? Its a really small amount of oil, not even enough to drip when the car is parked..
I tightened all the oil pan gaskets and even got a new heavier duty screw clamp for the pcv hose but there is still oil droplets forming...
Any Idea where it could be leaking from? Seems to be coming from the right side of the engine (non-tranny side)...
Its not a major leak NOW, but we all now how that goes

thanks for any insight, mainly looking for gaskets in that area of the engine that are known to leak...
thanks
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbotime »</TD></TR><TR><TD CLASS="quote">Ok I have tiny bits of oil leaking from SOMEWHERE. I am not sure where it is coming from but the way i know its leaking is there are droplets of oil forming on the front of the oil pan and on the oil pan drain bolt....
I have fittings in the back of the block for pcv, i think the right one may be leaking down the back of the block and onto the oil pan? Its a really small amount of oil, not even enough to drip when the car is parked..
I tightened all the oil pan gaskets and even got a new heavier duty screw clamp for the pcv hose but there is still oil droplets forming...
Any Idea where it could be leaking from? Seems to be coming from the right side of the engine (non-tranny side)...
Its not a major leak NOW, but we all now how that goes
thanks for any insight, mainly looking for gaskets in that area of the engine that are known to leak...
thanks</TD></TR></TABLE>
From just the driver side of the engine? cam seals, oil pump seal, front main, oil pressure sending unit, oil filter/oil cooler (if equipped). Remember though... as you are driving down the road, the wind will blow oil leaks all over the place. Best bet, clean very well with something like simple green. Fire up the car and let it idle a while, then check. Other option is using flourescent oil dye and a black light.
I have fittings in the back of the block for pcv, i think the right one may be leaking down the back of the block and onto the oil pan? Its a really small amount of oil, not even enough to drip when the car is parked..
I tightened all the oil pan gaskets and even got a new heavier duty screw clamp for the pcv hose but there is still oil droplets forming...
Any Idea where it could be leaking from? Seems to be coming from the right side of the engine (non-tranny side)...
Its not a major leak NOW, but we all now how that goes

thanks for any insight, mainly looking for gaskets in that area of the engine that are known to leak...
thanks</TD></TR></TABLE>
From just the driver side of the engine? cam seals, oil pump seal, front main, oil pressure sending unit, oil filter/oil cooler (if equipped). Remember though... as you are driving down the road, the wind will blow oil leaks all over the place. Best bet, clean very well with something like simple green. Fire up the car and let it idle a while, then check. Other option is using flourescent oil dye and a black light.
Thread Starter
Honda-Tech Member
Joined: Mar 2003
Posts: 5,661
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From: here n there n everywhere
ok i cleaned off all the leakage and let the car idle for 20min, then i revved it up to like 4k and down about 5 times. I let the car sit for 20min to cool and then checked for leaks, no signs of dripping or leaks anywhere.
Then I go for a drive, get into boost and stuff, and i go and look and drops are forming again....
pcv leak? Thats the only thing i can think of that would leak ONLY while driving....
Then I go for a drive, get into boost and stuff, and i go and look and drops are forming again....
pcv leak? Thats the only thing i can think of that would leak ONLY while driving....
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbotime »</TD></TR><TR><TD CLASS="quote">ok i cleaned off all the leakage and let the car idle for 20min, then i revved it up to like 4k and down about 5 times. I let the car sit for 20min to cool and then checked for leaks, no signs of dripping or leaks anywhere.
Then I go for a drive, get into boost and stuff, and i go and look and drops are forming again....
pcv leak? Thats the only thing i can think of that would leak ONLY while driving....</TD></TR></TABLE>
You can't see exactly where the drops are sourcing from? If not then I would say since you mentioned you THINK the PCV system has a leak to start there. Reseal that and then see if you still have an issue. If you do, I would reccomend the dye to better source the leak. If you need some I have some.
Then I go for a drive, get into boost and stuff, and i go and look and drops are forming again....
pcv leak? Thats the only thing i can think of that would leak ONLY while driving....</TD></TR></TABLE>
You can't see exactly where the drops are sourcing from? If not then I would say since you mentioned you THINK the PCV system has a leak to start there. Reseal that and then see if you still have an issue. If you do, I would reccomend the dye to better source the leak. If you need some I have some.
Yesterday I searched around for an oil leak of my own.
Here's how I found the source...
First I jacked up the car and wiped off the oil that was dripping. Then I took my flywheel inspection plate off and checked the flywheel to rule out the rear main. Dry as a bone, whew, didn't feel like pulling the tranny...
Next I removed the IM brace from the back of the block and the IM. Once that was removed I was able to get a flashlight up under there to get a better look. I also felt around in the ribbing on the engine block to see where oil had accumulated.
It felt to me like the oil was accumulating right under the black breather box, so I removed the two bolts that held it in place and removed the black box all together. By this time I could see the source of the leak which was above the breather box.
My leak turned out to be coming from either the VTEC selenoid, the dizzy, or from between the block and head. I know the general location now. So I wiped it down real good so I can keep an eye on it now.
If I were you, I would start from the bottom of the engine and trace the oil up to where it's coming from. If it's coming from that side of the engine it might be hard to find because of the lower timing cover which is a pain in the *** to take off.
Luckily though, if it's coming from that side of the engine there are only a few places it could be coming from, the cam seal behind the cam gear, the oil pump, or the oil pan gasket. There's no other place it really could be leaking from.
Here's how I found the source...
First I jacked up the car and wiped off the oil that was dripping. Then I took my flywheel inspection plate off and checked the flywheel to rule out the rear main. Dry as a bone, whew, didn't feel like pulling the tranny...
Next I removed the IM brace from the back of the block and the IM. Once that was removed I was able to get a flashlight up under there to get a better look. I also felt around in the ribbing on the engine block to see where oil had accumulated.
It felt to me like the oil was accumulating right under the black breather box, so I removed the two bolts that held it in place and removed the black box all together. By this time I could see the source of the leak which was above the breather box.
My leak turned out to be coming from either the VTEC selenoid, the dizzy, or from between the block and head. I know the general location now. So I wiped it down real good so I can keep an eye on it now.
If I were you, I would start from the bottom of the engine and trace the oil up to where it's coming from. If it's coming from that side of the engine it might be hard to find because of the lower timing cover which is a pain in the *** to take off.
Luckily though, if it's coming from that side of the engine there are only a few places it could be coming from, the cam seal behind the cam gear, the oil pump, or the oil pan gasket. There's no other place it really could be leaking from.
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