BARRACUDA1968
Well-Known Member
- Joined
- May 4, 2011
I know there's a thousand PCV threads but I have the same problem on 2 different engines so there's something I'm missing.
I have a fresh motor, both motors had breathers in both valve covers, old motor had good cylinders and rings and of course so does new motor. Both motors using the same PCV valve and it functions properly.
I use a catch can on both motors. PCV to catch can then to vacuum port. Hooked up correctly.
I keep smelling oil and it's not from leaks on either engine.
This morning I started the car in the driveway, visited with the neighbor for a few minutes and had a little smoke out the tail pipes while it warmed up. Drove to work and no smell. I'm convinced I'm sucking oil through the PCV in the motor somehow?
Drove the car last night about 40 miles, did some 15 psi pulls and the car runs great. Didn't really smell any oil last night but my catch can had oil in it this morning. Maybe 2 to 3 ounces. I'm bummed after only 40 miles. Both motors did this so I have to look at something other than engine related.
Here is the PCV I'm using. The black one on the right. PO installed it and I have no idea where he got it either.
Bottom view, the other PCV's came with the car in a box. AC Delco CV 893 and AC Delco CV 893 C I've tried them and the car will barely idle.
Top view
Why does this black PCV work and what I'm assuming is a factory AC Delco PCV won't work? Is this black PCV creating a lot more vacuum because of the smaller ID causing more suction in the valley pan area which is grabbing oil out of the motor?
If that's the case I would also wonder if that extra vacuum would hinder the catch can holding the oil that's being sucked out and allowing some to get in the intake?
Hopefully someone has been down this road and knows what I should do next. I'm tired of this problem.
Thanks Brett
I have a fresh motor, both motors had breathers in both valve covers, old motor had good cylinders and rings and of course so does new motor. Both motors using the same PCV valve and it functions properly.
I use a catch can on both motors. PCV to catch can then to vacuum port. Hooked up correctly.
I keep smelling oil and it's not from leaks on either engine.
This morning I started the car in the driveway, visited with the neighbor for a few minutes and had a little smoke out the tail pipes while it warmed up. Drove to work and no smell. I'm convinced I'm sucking oil through the PCV in the motor somehow?
Drove the car last night about 40 miles, did some 15 psi pulls and the car runs great. Didn't really smell any oil last night but my catch can had oil in it this morning. Maybe 2 to 3 ounces. I'm bummed after only 40 miles. Both motors did this so I have to look at something other than engine related.
Here is the PCV I'm using. The black one on the right. PO installed it and I have no idea where he got it either.
Bottom view, the other PCV's came with the car in a box. AC Delco CV 893 and AC Delco CV 893 C I've tried them and the car will barely idle.
Top view
Why does this black PCV work and what I'm assuming is a factory AC Delco PCV won't work? Is this black PCV creating a lot more vacuum because of the smaller ID causing more suction in the valley pan area which is grabbing oil out of the motor?
If that's the case I would also wonder if that extra vacuum would hinder the catch can holding the oil that's being sucked out and allowing some to get in the intake?
Hopefully someone has been down this road and knows what I should do next. I'm tired of this problem.
Thanks Brett