2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

Lots of water in oil???

Thread Tools
 
Search this Thread
 
Old 04-09-12, 02:48 PM
  #1  
Lurking on thread near U

Thread Starter
 
BeenJaminJames's Avatar
 
Join Date: Dec 2008
Location: Huntsville, Alabama
Posts: 143
Likes: 0
Received 0 Likes on 0 Posts
Lots of water in oil???

So I have this 87 n/a sitting in my yard, a buddies car that's been sitting for a few years due to a "blown head gasket". Since I have a couple FBs, he wanted me to diagnose and fix it. So I tow it home, jack it up, pour water in the radiator, and it starts streaming out the oil pan gasket. I pull the dipstick and sure enough, the tube is brim full of water! I've seen some strange things with rotaries, but I cannot imagine what could be allowing water into the oil? On my FBs, there's really not any way for water to mix with oil, save for the beehive oil cooler that's not even present on this FC. Anyone with more 13B experience have any ideas? When drained the milk out of the pan and left the plug out, water poured out of the pan as fast as I could pour it in. What gives?
Old 04-09-12, 04:47 PM
  #2  
Rotary Freak

iTrader: (1)
 
rx7racerca's Avatar
 
Join Date: Jul 2004
Location: Lake Country, BC, Canada
Posts: 1,725
Received 8 Likes on 5 Posts
Cracked housings. Blown coolant seals. I think that pretty much covers it. Clearly, it's bad, and the only way you'll know is to tear it down.
Old 04-09-12, 04:53 PM
  #3  
Irregular Here

iTrader: (14)
 
7dust's Avatar
 
Join Date: Dec 2003
Location: Alvin, TX
Posts: 3,075
Likes: 0
Received 4 Likes on 4 Posts
AH - I know this one! I tore my engine down three times looking for bad coolant seals or a cracked housing / iron. I still almost didn't find it.

The answer is FREEZE PLUGS. There are a couple of them behind the front cover.

You technically do not have to detension and tear the engine down to repair but you do have to remove the pan and front cover.
Old 04-09-12, 05:08 PM
  #4  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,986
Received 2,688 Likes on 1,903 Posts
Originally Posted by 7dust
AH - I know this one! I tore my engine down three times looking for bad coolant seals or a cracked housing / iron. I still almost didn't find it.

The answer is FREEZE PLUGS. There are a couple of them behind the front cover.

You technically do not have to detension and tear the engine down to repair but you do have to remove the pan and front cover.
yes, the only way for water to get to the oil (besides leaking out of the engine, and then leaking back in, thru another seal) are the freeze plugs under the front cover.
Old 04-09-12, 05:12 PM
  #5  
Banned. I got OWNED!!!
iTrader: (11)
 
stevensimon's Avatar
 
Join Date: Aug 2003
Location: salt lake ut
Posts: 3,575
Likes: 0
Received 5 Likes on 5 Posts
there are 4 of them under the front cover
Old 04-09-12, 05:27 PM
  #6  
Irregular Here

iTrader: (14)
 
7dust's Avatar
 
Join Date: Dec 2003
Location: Alvin, TX
Posts: 3,075
Likes: 0
Received 4 Likes on 4 Posts


Here is what I think about leaky freeze plugs. That little bastard developed a pinhole leak and would only flood the oil pan when the cooling system pressurized.
Old 04-09-12, 05:28 PM
  #7  
Irregular Here

iTrader: (14)
 
7dust's Avatar
 
Join Date: Dec 2003
Location: Alvin, TX
Posts: 3,075
Likes: 0
Received 4 Likes on 4 Posts
Originally Posted by stevensimon
there are 4 of them under the front cover
^^^ Two inside the cover, two outside the cover on the front iron.

At least on the FD.
Old 04-09-12, 05:43 PM
  #8  
Lurking on thread near U

Thread Starter
 
BeenJaminJames's Avatar
 
Join Date: Dec 2008
Location: Huntsville, Alabama
Posts: 143
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by 7dust
AH - I know this one! I tore my engine down three times looking for bad coolant seals or a cracked housing / iron. I still almost didn't find it.

The answer is FREEZE PLUGS. There are a couple of them behind the front cover.

You technically do not have to detension and tear the engine down to repair but you do have to remove the pan and front cover.
D'uh!!! I should've known, I kept forgetting about the other 2 plugs under the front cover. And the answer is so OBVIOUS. Thanks guys, now I just need to figure out if rust will be an issue, since the car sat for a couple years.
Old 04-09-12, 08:37 PM
  #9  
Irregular Here

iTrader: (14)
 
7dust's Avatar
 
Join Date: Dec 2003
Location: Alvin, TX
Posts: 3,075
Likes: 0
Received 4 Likes on 4 Posts
Pull the pan and front cover off and have a lookie-see.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
FD7KiD
3rd Generation Specific (1993-2002)
15
02-26-21 10:12 PM
Th0m4s
Build Threads
25
02-26-19 02:04 AM
Snoopy FD
Build Threads
25
12-08-15 01:45 PM
FD7KiD
Single Turbo RX-7's
1
08-17-15 11:50 PM



Quick Reply: Lots of water in oil???



All times are GMT -5. The time now is 03:18 PM.