420A Oil leak locations?

[inix92]

Ok well iv done a decent amount of repairs to the car sense iv got it i was just wondering where most of the common oil leaks come from these 420a non turbo cars. im just hoping its not a head gasket

 

[mazda-man]

If it is leaking down the back of the block from around the cylinder head area then you have a leaking headgasket which is very common on the 420a's. I've done hundreds of headgaskets on them. Find the place where the oil is highest on the engine and there is your leak. The oil cannot run up. If you want to be sure clean the back of the engine very well and then run the car and recheck it often to locate the leak. Good luck. Also one of the pictures looks like the oil pressure sending unit but I can't really make out what the other one is.

 

[Kod]

Oil sending units are pretty known for leaking, I've changed quite a few of them.

 

[Janaelen]

Whenever I have a hard to find oil leak, I start by cleaning the entire bay (degreaser) then adding UV dye to the oil (made specifically for engine oil). I then run the motor and use a UV light to locate the source of the leak. I bought a $30 UV kit and $8 dye from Advance Auto. It's not the best of lights but if you do this at night, you should be able to see the UV dye coming from all areas that leak.

Not the cheapest way to find a leak but definately the most thorough.