Vanning.com logo
Boxdin
Site Navigation


Advertisements
Recent Posts
Aftermarket headlights for 73’ g20
by Reed. August 16th 2018 11:37 am
16.5 Rims.. HELP!
by frscke1. August 16th 2018 9:48 am
What Did You do To your Van Today?
by RichardB. August 16th 2018 9:16 am
Any a100 a108s close to NYC, 02882 RI, Boston, Hartford CT
by nycA108hopeful. August 16th 2018 8:39 am
Hi! which 350 van engine is the "best" n strongest?
by Hasan Ben Sobar. August 15th 2018 11:34 pm
WTB: 1976-1979 Ford Cruising Van
by CatFish. August 15th 2018 9:51 pm
New here
by Starlord. August 15th 2018 7:27 pm
WILD CHERRY lives !
by Dyno_Dave. August 15th 2018 7:19 pm
official Ford owners picture thread
by VanGuySteve. August 15th 2018 6:58 pm
Bit of a twist
by Astrocreep66. August 15th 2018 6:18 pm
Featured Links
Vanning.Com is a an authorized Amsoil Dealer


Previous Thread
Next Thread
Print Thread
Rate Thread
Oil in Air Cleaner Housing #737016
June 05th 2018 2:24 pm
June 05th 2018 2:24 pm
Joined: Jun 2010
Posts: 937
USA
N
nikothenomad Offline OP
old hand
nikothenomad  Offline OP
old hand
N
Joined: Jun 2010
Posts: 937
USA
Every once in a while we get a little something in the air cleaner housing. Usually it is fuel spray from flooding but this time when we pulled the top off there was a small puddle of oil in the bottom of it and the filter about 1/3 to 1/2 coated as well. Typically we replace our filter because it just seems like a good idea (meaning we rarely have much obvious dirt and our filters are still fairly white when we swap them out). This one is pretty darn solid black on one side now.

Anyway, from my reading, I've found that I should first check the pcv valve. Since it is a simple fix, I'll do that first. If that's o.k. I am under the impression that prior to doing an actual compression test I could look at the spark plugs to see if they are covered in oil (which they never have been since buying the van so we would know something is different).

Any other thoughts or ideas on how to check to see if this oil in the air filter housing was a fluke or something serious?


Nicole
1988 Dodge B250 5.9l 360 Ram CamperVan / 727 Tranny / Rochester Quadrajet Carb
www.nikothenomad.blogspot.com
Re: Oil in Air Cleaner Housing [Re: nikothenomad] #737020
June 05th 2018 4:38 pm
June 05th 2018 4:38 pm
Joined: Aug 2001
Posts: 11,685
Fircrest, WA
Reed Online content
Maniac
Reed  Online Content
Maniac
Joined: Aug 2001
Posts: 11,685
Fircrest, WA
Change the PCV, crankcase breather, and the air filter and see if the oil in the aircleaner comes back. Oil in the air cleaner is usually a symptom of (a) a bad PCV or (b) blowby. Blowby is worn out rings or cylinder bores. If changing the PCv doesn't fix the problem, it is time for a compression check or, better yet, a leak down test to determine the health of the engine block/rings.


Windows- they're what make a van worth owning!
Re: Oil in Air Cleaner Housing [Re: nikothenomad] #737022
June 05th 2018 5:10 pm
June 05th 2018 5:10 pm
Joined: Jun 2010
Posts: 937
USA
N
nikothenomad Offline OP
old hand
nikothenomad  Offline OP
old hand
N
Joined: Jun 2010
Posts: 937
USA
Alright. That's what we were thinking, Reed. We'll do the tests before we go any further down the road since we are in a location that gives us opportunity to work on the van and access to a second vehicle. Would rather know than get caught on the road stranded. Would the leakdown test be a definitive?


Nicole
1988 Dodge B250 5.9l 360 Ram CamperVan / 727 Tranny / Rochester Quadrajet Carb
www.nikothenomad.blogspot.com
Re: Oil in Air Cleaner Housing [Re: nikothenomad] #737025
June 05th 2018 6:41 pm
June 05th 2018 6:41 pm
Joined: Aug 2001
Posts: 11,685
Fircrest, WA
Reed Online content
Maniac
Reed  Online Content
Maniac
Joined: Aug 2001
Posts: 11,685
Fircrest, WA
Yes. A leakdown test will absolutely tell you if the rings or cylinders have worn to the point of allowing excesive amounts of combustion gasses to leak past the rings and pressurize the crankcase, forcing oil into the PCV.


Windows- they're what make a van worth owning!
Re: Oil in Air Cleaner Housing [Re: nikothenomad] #737026
June 05th 2018 7:02 pm
June 05th 2018 7:02 pm
Joined: Jun 2010
Posts: 937
USA
N
nikothenomad Offline OP
old hand
nikothenomad  Offline OP
old hand
N
Joined: Jun 2010
Posts: 937
USA
OK Then. That is the test we will do. Once we get the coolant system put back together! Thanks!


Nicole
1988 Dodge B250 5.9l 360 Ram CamperVan / 727 Tranny / Rochester Quadrajet Carb
www.nikothenomad.blogspot.com
Re: Oil in Air Cleaner Housing [Re: nikothenomad] #737053
June 06th 2018 8:19 am
June 06th 2018 8:19 am
Joined: Jun 2010
Posts: 937
USA
N
nikothenomad Offline OP
old hand
nikothenomad  Offline OP
old hand
N
Joined: Jun 2010
Posts: 937
USA
Reed, I think I was confused. What about the compression test where you put some oil in the spark plug hole? Different than a leak down test? What does it reveal?


Nicole
1988 Dodge B250 5.9l 360 Ram CamperVan / 727 Tranny / Rochester Quadrajet Carb
www.nikothenomad.blogspot.com
Re: Oil in Air Cleaner Housing [Re: nikothenomad] #737055
June 06th 2018 11:40 am
June 06th 2018 11:40 am
Joined: Aug 2001
Posts: 11,685
Fircrest, WA
Reed Online content
Maniac
Reed  Online Content
Maniac
Joined: Aug 2001
Posts: 11,685
Fircrest, WA
You were thinking of a compression test. A compression test just tells you how much compression any particular cylinder is making. This is useful, but not a good as a leakdown test. A leakdown test actually pressurizes each cylinder while you monitor the pressure and listen for leaks. If a leak is detected, you can pinpoint if it is leaking into the intake, exhaust, cooling passages, or crankcase. A leakdown test gives you much more and more accurate information than a simple compression test. See here: https://mobiloil.com/en/article/car-maintenance/car-maintenance-archive/how-to-do-a-leakdown-test


Windows- they're what make a van worth owning!
Re: Oil in Air Cleaner Housing [Re: nikothenomad] #737065
June 06th 2018 4:34 pm
June 06th 2018 4:34 pm
Joined: Jun 2010
Posts: 937
USA
N
nikothenomad Offline OP
old hand
nikothenomad  Offline OP
old hand
N
Joined: Jun 2010
Posts: 937
USA
Yup. Sounds like leak down is the way to go. Although I may do a regular compression test to start out simply because I did one when I bought the van and a comparison of the numbers eight years later might be interesting.

Thanks! This will get done after we finish getting the coolant system back together.


Nicole
1988 Dodge B250 5.9l 360 Ram CamperVan / 727 Tranny / Rochester Quadrajet Carb
www.nikothenomad.blogspot.com

Moderated by  Astro, Ram4ever 

Donate


Upcoming Events
discovery
Instagram Feed
Who's Online Now
1 registered members (bubbafat), 2 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Newest Members
Albert_B, TRGough, mamiya314, LunarLander, paigepress
10497 Registered Users
Top Posters(30 Days)
Dyno_Dave 104
frscke1 60
CatFish 43
Reed 37
Forum Statistics
Forums68
Topics34,694
Posts512,474
Members10,498
Most Online177
May 8th, 2013

Powered by UBB.threads™ PHP Forum Software 7.6.1.1
(Release build 20180111)
Page Time: 0.053s Queries: 15 (0.010s) Memory: 1.1277 MB (Peak: 1.7980 MB) Zlib enabled. Server Time: 2018-08-16 16:00:08 UTC