Not sure

So I have a leak and not sure where it smokes a little and my gas mileage is crap idk if that has anything to do with it but and input would greatly appreciated it's a 3.4 96 Toyota Tacoma roughly 245980 miles on it

 

What engine and how many miles?

 

Welcome to the forum!!

Just what seems to be leaking?

Knowing the year and drive train is helpful.

Pictures even more so.

 

I posted a update with more info and pictures

 

Looks like time for valve cover gaskets.

Have you pulled any Codes ? That can help point in the right direction at times .

When was the last tune up ?

Good luck!

 

I always start with new spark plugs and take it from there. Try cleaning the mass air flow sensor, too.

 

Looking at the pictures- They very clearly show that the valve covers seals are leaking. The oil leaks down the block and onto the hot exhaust manifolds which is causing the smoke and am I am sure smell. This is a very common issue for these engines.

Are you planning on doing the work yourself, or just researching prior to taking it in?

The job is not difficult if you have the right tools. Here is a complete video tutorial for reference:
https://youtu.be/N5fAXAuGozI

 

Also looks like a spark plug tube seal is leaking so don't skip those (or the cam plugs and half moons) when doing the job.