Crankshaft rear seal didn't fix the oil leak

[Jagdpanzer]

Jim,
I have some new PCV valves if you need em.

[QB93Z]

Thanks Phil, I have a set that I put in.

Update: I pulled the plenum, coil pack and the starter. I cleaned everything up, torqued down the CCVH bolts, and tightened up th event elbows. also, I put in two new PCV valves and cleaned up all the tubing. Put it all back together and drove 25 miles this evening.

No drip upon return to the garage, but I will wait til morning and look for the small oil puddle that I was getting before.

Only problem is that the secondaries hesitate about a half second before opening. They never did that before. So I guess I will pull the plenum and groom the secondary vacuum system again.

Keeping my fingers crossed on the oil leak.

Jim

PS: Thank you to everyone for all the advice and wisdom!

[Scrrem]

Get news Jim, hope that gets it!
Rich

[QB93Z]

Bummer!

There was a small puddle of clean looking oil under the bell housing this morning.

So, I guess the next step is to figure out if the transmission is leaking out of the input shaft seal.

But it will have to wait til I take a ten-day trip in 1994 ZR-1.

See you when I get back.

Jim

[Aurora40]

Originally Posted by QB93Z

Now some more questions:

Why are there two different PCV valves? How do you tell if a PCV valve is bad?

The two valves are different. My assumption is that they wanted some kind of flow scenario that one valve didn't accomplish. Like maybe some amount of leak at X amount of vacuum/pressure, then ramping up to some amout Y at some different vacuum/pressure.

Like Tom said, the only way I know to check them is to shake them and make sure the valve still moves freely. But really once you get to that point and they are original, you may as well just swap 'em out.

[Aurora40]

As to the clean oil coming out, is there a way to add some kind of dye or something to the engine oil or trans oil so that you can tell which the leak is from?

[secondchance]

Originally Posted by Aurora40

As to the clean oil coming out, is there a way to add some kind of dye or something to the engine oil or trans oil so that you can tell which the leak is from?

That's a great idea. I guess both have to be clean and finding a dye that won't have ill effect. But then it will be drained and replaced after the fact except motor will always retain 25%.

Originally Posted by Aurora40

The two valves are different. My assumption is that they wanted some kind of flow scenario that one valve didn't accomplish. Like maybe some amount of leak at X amount of vacuum/pressure, then ramping up to some amout Y at some different vacuum/pressure.

Bob s correct. THere are two PCV valves to help push the crankcase air out. The motor has two different characteristics and one valve was not enough. GM/Lotus had problems maintaining oil control.

Just replace the valves. They are cheap, and probably need to be replaced anyways.

Jim, the other option is you can remove everything, and fire up the motor and run it and see if you get any seeping. Just wear good ear and eye protection when doing so.

[Jagdpanzer]

Originally Posted by Aurora40

As to the clean oil coming out, is there a way to add some kind of dye or something to the engine oil or trans oil so that you can tell which the leak is from?

Easy, drain the engine oil and refill with Royal Purple oil.

[phrogs]

or some kind of dye so you can determine if its the engine or the transmission and then start to trouble shoot it.