Someone else just had the same problem in a 258 YJ and after figuring
his PCV system was likely working ok, the diagnosis appeared to be a bad
valve on the exhaust air tubes that connect into the middle of the air
filter.
Those valves can be eliminated from the system for a test by plugging
the holes with wine corks.
Seeing as you will be getting rid of or shutting off 'all' the pollution
controls with your HEI and 2100, these exhaust tubes can be unhooked
from the air filter and permanently blocked. On one that was broken, we
blocked it down at the CAT with a large bolt that happened to fit the
tube perfectly.
And just an FYI for you. The stock Weber-Carter BBD on it can be made
to behave quite nicely with a $20.00 carb kit and some tweaking,
especially after the computer is taken out of the circuit.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06
http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
"LoneGreyWolf via CarKB.com" wrote:
>
> Took the cover off my air filter housing today and discoverd about 1/2 cup of
> milky white fluid in the housing and coating the air filter. I live in the
> mountains at 6500 ft with night time temps at 15-25 and days at 25-50.
> Just bought the 88 YJ with 155,000 on it. Am planning to do an HEI dist
> conversion, and put a MC2100 on it.
>
> I don't drive it much and it runs poorly enough that I start it and leave it
> running for awhile before driving across town (3 miles in either direction) I
> have only taken it on a couple of 2-3 hour, back dusty road drives. It stays
> on high idle for a long time 10-15 minutes and is hard to start if it doesn't
> sit long enough.
>
> There is no froth in the valve cover or on the cap, can't see any oil in the
> recovery bottle or water in the oil. I'm thinking with the short drives and
> long idle, or high idle times, I am picking up a lot of very moist air out of
> the exhaust and it is condensing in the air filter housing. Just a guess,
> what do you pros think?
>
> --
> Message posted via CarKB.com
> http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200612/1