If the car has been parked overnight to days could be just moisture boiling off on top of any blow by for the pistons.
Weird weather in most places can dump a lot of water into a cooling/cold engine and take awhile to boil off.
If the car has been running an hour or more, then maybe worry.
Pressure testing Fiero coolant system is harder because little clearance to install most testers on the rad w/o taking the hood off...
Most current kits available thru "Loaner Tools" programs have many caps all too tall to fit there.
Most Old Stant testers you find used have the pump on the rad tube and even taller then new testers.
Only found 1 old ACDelco tester (AKA GM/Kent-Moore J-24460-A ) w/ a test cap made to fit Fiero and some others w/o pulling the hood etc. (Likely is a Stant tester but never seen this version w/ their name. Stant makers parts and tools for car makers for 50+ years.) Likely still find one but likely have to buy a tool you rarely need.
| quote | Originally posted by Patrick:
In regards to your issue, check that the PCV system is operating properly. Otherwise, pressure in the crankcase builds up and it tries to escape anywhere it can. Make sure the PCV valve isn't sticking, or better yet, just replace the valve. It's inexpensive. |
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Iffy valve may make this problem and is cheap so replace them.
But a good PCV valve only helps when an engine isn't worn. Even then, opening oil fill port bypass the valve and "smoke" just goes out the shortest path.
If the fill cover is on and smoking thru PCV inlet port then something is wrong. I think should see a little vacuum there @ idle.------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)
The Ogre's Fiero Cave
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