Oil pan gasket leak, improper install?
#1
Honda-Tech Member
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Oil pan gasket leak, improper install?
I replaced my oil pan gasket on my 93 w/D16Z6 last year after rear main seal change. Now it's leaking like crazy from behind the crank pulley. I'm pretty sure it's the oil pan gasket and not the oil pump seal. I noticed the gasket is pushed out farther than the oil pan itself. It's maybe 1/8" past. The block is dry behind the crank sprocket.
Here's a pic, not sure of how it' supposed to look.
Here's a pic, not sure of how it' supposed to look.
#4
Honda-Tech Member
Re: Oil pan gasket leak, improper install?
If this leak is from the pan it will not be higher up at all.
So if there is any oil around or behind the crank pulley then that is more than likely the culprit. the only way to know is dig in and inspect
So if there is any oil around or behind the crank pulley then that is more than likely the culprit. the only way to know is dig in and inspect
#5
Re: Oil pan gasket leak, improper install?
My D16Y8 recently had a leak like yours and it turned out to be from the upper right corner near the O-ring of the oil pump. Removed the oil pump, replaced the O-ring, carefully cleaned off the old gasket material, applied new HondaBond, and torqued the bolts to spec. She's now oil leak free.
#6
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Thread Starter
Re: Oil pan gasket leak, improper install?
My D16Y8 recently had a leak like yours and it turned out to be from the upper right corner near the O-ring of the oil pump. Removed the oil pump, replaced the O-ring, carefully cleaned off the old gasket material, applied new HondaBond, and torqued the bolts to spec. She's now oil leak free.
#7
Re: Oil pan gasket leak, improper install?
Where did your leak show up at? Before I put everything back together I looked all around that area and didn't see any signs of a leak. I was almost 100% sure it was the oil pan gasket. I noticed today that a leak is back and is dripping off the left rear corner of the oil pan. It dripped two drops in the 15 minutes I was back home at lunch. Looks like I'll be working on this car 3 weekends in a row.
The D16Y7 in my 97 Civic DX appears to have the same oil leak, so an oil leak from the oil pump may be more common than I initially thought.
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#8
Re: Oil pan gasket leak, improper install?
On my 93 del sol si D16z6 I chased oil leaks including the oil pan gasket.
The most recent one I had was detected by a Honda mechanic after I gave up. It was the oil pressure sending unit to the dashboard gauge. It's located low on the back of the block just above the oil filter. With the car on a lift remove the oil filter and you can see the sending unit. It can't be seen by jacking up the car and crawling under.
Note replace with a Honda OEM sending unit. We tried aftermarket units and the oil pressure light would come on at engine idle. This happened with 2 new aftermarket sending units.
This oil leak traveled along the edge of the oil pan and I thought it was my rear main seal
The most recent one I had was detected by a Honda mechanic after I gave up. It was the oil pressure sending unit to the dashboard gauge. It's located low on the back of the block just above the oil filter. With the car on a lift remove the oil filter and you can see the sending unit. It can't be seen by jacking up the car and crawling under.
Note replace with a Honda OEM sending unit. We tried aftermarket units and the oil pressure light would come on at engine idle. This happened with 2 new aftermarket sending units.
This oil leak traveled along the edge of the oil pan and I thought it was my rear main seal
#9
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Re: Oil pan gasket leak, improper install?
Here are a few more pictures.
First, taken as soon as I drove up on the ramps. Car has been driven 3 days since oil pan gasket was replaced.
2&3, after cleaning the area where the leak occured. That was the best I could do.
4&5 after a quick trip around the block, maybe 5 minutes of running time.
By the time I shot the 5th picture, it had already started to drip off the lower timing belt cover and oil pan. As you can see in the 5th pic, the oil had made it's way all the way down the side of the oil pump but hadn't made it quite to the edge of oil pan yet. I guess it's running just inside the timing cover as RonJ explains in his post.
First, taken as soon as I drove up on the ramps. Car has been driven 3 days since oil pan gasket was replaced.
2&3, after cleaning the area where the leak occured. That was the best I could do.
4&5 after a quick trip around the block, maybe 5 minutes of running time.
By the time I shot the 5th picture, it had already started to drip off the lower timing belt cover and oil pan. As you can see in the 5th pic, the oil had made it's way all the way down the side of the oil pump but hadn't made it quite to the edge of oil pan yet. I guess it's running just inside the timing cover as RonJ explains in his post.
#11
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#12
Re: Oil pan gasket leak, improper install?
The lower timing belt cover is not seated correctly.
Oil would drip from the below the weep hole of the lower cover if the crank or cam seal were leaking. This and the fact that oil is seen above the oil pan gasket points to an oil pump leak. My recommendation is that you remove the crank pulley and timing belt covers to confirm.
Oil would drip from the below the weep hole of the lower cover if the crank or cam seal were leaking. This and the fact that oil is seen above the oil pan gasket points to an oil pump leak. My recommendation is that you remove the crank pulley and timing belt covers to confirm.
#13
Honda-Tech Member
Thread Starter
Re: Oil pan gasket leak, improper install?
Would that be the same leak that you refer to in post #7? When I had the covers off last time there were no leaks from either the cam or crank seal.
#14
Re: Oil pan gasket leak, improper install?
Yes. In your case, oil may not drip from the weep hole due to the lower cover not being seated properly.
You'll need to remove the crank pulley and covers again to verify anyway.
When I had the covers off last time there were no leaks from either the cam or crank seal.
#15
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#16
#17
Fish Twig
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Re: Oil pan gasket leak, improper install?
Seriously.........its leaking from behind a cover. That cover needs to be removed to identify the leak source. Playing guessing games is not going to help.
#18
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Re: Oil pan gasket leak, improper install?
If you had to make an educated guess based on what I've posted, would you say oil pump leak? I don't want to have to take it apart, then put it back together, wait a week and do it all over again. It wasn't leaking from either the cam or crank seal 2 weeks ago when I replaced the oil pan gasket. Is there anywhere else for it to leak from on that side?
#19
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Re: Oil pan gasket leak, improper install?
In that area, the only thing I can think of is the oil pump seal unless its not oil but coolant leaking, but you're gonna have to let the car sit on jackstands until you locate that leak. That way you don't have to keep putting all back together multiple times.
This time when you take it off take pictures of where you think the leak is coming from and just hold off.
This time when you take it off take pictures of where you think the leak is coming from and just hold off.
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