jmassey26

I have a 1996 3500 4x4 with a bad oil leak on the left side of the motor can't see where it is coming from it is not from the pan it seam to up higher in back of the injector pump I don't want to have to take off the starter it to see if I don't have to. thanks Jack

Tacomaman87

are you sure its not coming from the crankcase breather? Sounds like the right location for the breather and puke bottle.

jmassey26

it just has a tube coming down but no bottle I didn't know it it had a bottle will check in the morning Thanks Jack

infidel

The 12 valves have no puke bottle and the breather tube is in entirely different location than the 98.5 and newer.

Finding an oil leak online is just a guessing game.
Only way is to clean it up and find where the leak is actually coming from then we'll teach you how to fix it.

jmassey26

it is coming out of the crankcase breather tube and blowing up on the engine as best I can tell thanks

Common

Bet its a valve cover.

infidel

Extend the tube about a foot, paint the pavement not the bottom of your truck.
I pushed a length of 3/4" ID poly hose over my stock tube, no clamps.
Been hanging on there for 15 years.

jmassey26

It uses 1 gal. of oil every 350 miles. My wife's truck is a 92 dodge and she uses or oil. what could cause mine to blow out so much oil.

infidel

If it's sending that much out the blowby I'd say about the only thing that could be wrong is the rings/cylinders are worn and the engine needs to be rebuilt.

rebal

Is the oil coming out the blow by tube? check the tappet cover , make sure its not running out there 1 gal. x350 miles you sould be able to find that easy.

meangreen96

Put in another vote for the tappet cover. Mine is leaking from there right now too. There are six bolts you can tighten there. I was able to get to 4 of them. Some were pretty loose - not a gallon every 350 miles loose but enough.

Try tightening them and see if that helps. It's right by the puke tube so you might be confusing the source.

Common

Didn't read the post above me.

- It has to be bad blowby.

jmassey26

how do I fix it

Common

Rebuild the engine...

Sucks, but thats pretty much the only thing to solve the blowby issue.

In your case, TERRIBLE.

1 gallon, every 350 miles?

Unless something is unbolted under there - I don't know what else to say.

If you wash the engine down - then spray some brake cleaner on what you couldnt get off - and let it idle or whatever - see if oil comes out anywhere.

Could be many things that are an easy fix - but if its blowby - you need to suffer or rebuild.