There are several locations that make the leakage looks like from the oil filter housing. I would doubt the balance shaft oil seal or the balance shaft belt tensioner bolt first. If you upload a pic, maybe more people would be able to help you better.

Usually an oil drip on the housing is an indication of either an oil pan leak, cam seal leak or crank seal leak. I believe the only oil retaining nut on the timing side of the motor is one of the long hydraulic tensioner bolts.

The oil pump housing, and the oil filter housing rarely leak on their own. The primary leaks are the oil pan, cam seals, crank seals, and oil pump pulley seal. Make sure your oil filter mounting bolt is secure and the oil cooler isn't loose. My project gst had the oil filter bolt so loose it would shake when you grabbed it

Here is a picture. Can’t see the oil I just put the motor in and the oil is very clean. But where the red circle is I get a pool of oil but not really any above that.

I had a leak from behind the same pulley for the Balance shaft. There is a seal behind the pulley that was the culprit fix it for me.

To answer your question, yes, oil can leak from there. It intersects an oil galley. Use a thread sealant and torque it to I believe 17ft/lbs. Permatex high temp thread sealant should do it. Be sure to let it set.

https://www.permatex.com/products/t...nts/permatex-high-temperature-thread-sealant/

sloffie101 said:

I had a leak from behind the same pulley for the Balance shaft. There is a seal behind the pulley that was the culprit fix it for me.

Click to expand...

What pulley seal was leaking the tensioner pulley or the front balance shaft Iam getting a bad leak as well seems to come from the front balance shaft seal!

Can the front balance shaft seal be replaced with the front cover intact?

954g63gst said:

What pulley seal was leaking the tensioner pulley or the front balance shaft Iam getting a bad leak as well seems to come from the front balance shaft seal!

Can the front balance shaft seal be replaced with the front cover intact?

Click to expand...

this thread is 9 years and the person you are addressing has been gone 9 years also.

954g63gst said:

What pulley seal was leaking the tensioner pulley or the front balance shaft Iam getting a bad leak as well seems to come from the front balance shaft seal!

Can the front balance shaft seal be replaced with the front cover intact?

Click to expand...

All seals on the front cover can be replaced without removing front cover