So I have a 2000 Honda civic dx that was recently rebuilt from the head and transmission (everything except the block), and I found a leak underneath the oil pan where it meets with the crankshaft. Thinking it is a leak from the crankshaft seal but don't want to tear it apart and replace it having it come from somewhere else. Please help engine is a d16y7, picture posted below.

 

Honestly...there is no magic pill for this. And at that location, i am certain it is the crank seal. The only other areas to check would be your cam seal on the head...pop open the cover and look for oil dripping/running behind the cam gear. But just based on my experience, and this photo...i'd lay a bet on it being a pinched crank seal.

The good news is that seal can be done without dropping the motor, but will require you to take off the timing belt and gear, pull out old seal, carefully pop in new seal and then retime.

 

dang alright, thank you for your input!!

 

Looks like the oil leak have on my Civic, its annoying on mine because I put in new seals on the cam and crank during a head gasket job, but I had also replaced the oil pump too. I might look into addressing mine after I fix the Integra...

 

wondering if I should try replacing the oil pan gasket first and see if that solves it...

 

Would I be able to check for a leak by popping off the timing cover and checking from there instead of taking everything apart to see? Could this possibly be just a oil pan gasket leak?

 

Who did the rebuild- a shop/you paid someone?

oil pan leaks are more often a "seepage" than a fresh drip like that. not impossible, but not likely the cause.

upper cover is easy to get off and will let you see the cam seal fairly well and possibly give enough access to shine a light down to the crank seal and surrounding oil pump and timing cover area to see if there oil dampness there.

 

It was a guy I know through my work that bought the car and rebuilt the engine and transmission before I bought it. I checked underneath the car after driving it for a few days and now I'm seeing oil drip from the bottom of the pan. Also noticing a gas smell/ burning smell when I start and drive it. One of the injectors looks wet compared to the others but not necessarily "leaking". I know that is off topic but it's something that is also going on along with reduced mpg.

 

more photos:

 

It could be anywhere there is a seam between two surfaces. The next warm day, take it to a DIY car wash and clean the engine area that is oil soaked. drive it home and the dust baby powder around the leaking area and above the area (valve cover to oil pan). and go for a drive. Look for the wet spot (no jokes you highschoolers) and follow it to where is starts.