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

Has anyone ever HAD to use ATF/oil to unflood a motor?

Thread Tools
 
Search this Thread
 
Old 02-06-04, 07:08 AM
  #1  
Despise Enmity

Thread Starter
 
Josepi's Avatar
 
Join Date: May 2001
Location: Richmond, VA
Posts: 2,420
Likes: 0
Received 0 Likes on 0 Posts
Has anyone ever HAD to use ATF/oil to unflood a motor?

Just curious of your experiences, how'd you do it, results, what nots!



I'm still dealing with a flooded motor...
Old 02-06-04, 07:41 AM
  #2  
Send me your BMX parts

 
raising arizona's Avatar
 
Join Date: Jan 2004
Location: Quartz Hill CA
Posts: 534
Likes: 0
Received 2 Likes on 2 Posts
Yup! I did when I was trying to dial in the stand alone MAP-idle when I first installed it (rich)

pull out a leading plug(s) and squirt about an once and then turn it over...It will smoke like a bitch probably and you will have to get new plugs. Chances are there fouled and thats the reason its not starting... You might get it started just by getting new plugs.
Old 02-06-04, 07:56 AM
  #3  
Despise Enmity

Thread Starter
 
Josepi's Avatar
 
Join Date: May 2001
Location: Richmond, VA
Posts: 2,420
Likes: 0
Received 0 Likes on 0 Posts
Originally posted by raising arizona
Yup! I did when I was trying to dial in the stand alone MAP-idle when I first installed it (rich)

pull out a leading plug(s) and squirt about an once and then turn it over...It will smoke like a bitch probably and you will have to get new plugs. Chances are there fouled and thats the reason its not starting... You might get it started just by getting new plugs.
New plugs, good starter, used a fresh different battery from a diff car, it's got spark on the leading, got gas (you should see the vapors coming out of the exhaust)...



Did you have any luck with the simple unflooding or did you just use ATF first?
Old 02-06-04, 09:26 AM
  #4  
Full Member

 
Join Date: Sep 2003
Location: LA
Posts: 138
Likes: 0
Received 0 Likes on 0 Posts
We started with the simple, then complex methods at rx7.com.. they work

http://rx7.com/tech/unflood-fc.html
Old 02-06-04, 10:33 AM
  #5  
Lives on the Forum

iTrader: (8)
 
RotaryResurrection's Avatar
 
Join Date: Oct 2003
Location: Morristown, TN (east of Knoxville)
Posts: 11,576
Received 25 Likes on 18 Posts
Yep, I have to all the time.

Why don't you get a tow around the block in 2nd gear if you are afraid of the atf?
Old 02-06-04, 10:53 AM
  #6  
Despise Enmity

Thread Starter
 
Josepi's Avatar
 
Join Date: May 2001
Location: Richmond, VA
Posts: 2,420
Likes: 0
Received 0 Likes on 0 Posts
Originally posted by RotaryResurrection
Yep, I have to all the time.

Why don't you get a tow around the block in 2nd gear if you are afraid of the atf?
Not afraid of the ATF, just haven't gone to the store to get it yet!

Just curious as to peoples experiences so that I can gauge if I'm screwing something up...
Old 02-06-04, 11:47 AM
  #7  
I wish I had a posse...

 
ZachSpazz's Avatar
 
Join Date: Feb 2001
Location: Cincinnati, Ohio-Boycott Central
Posts: 896
Likes: 0
Received 0 Likes on 0 Posts
I've always been able to deflood a rotary by flooring the gas pedal, and pulling the EGI fuse. I've never had to pull the plugs, even on my 88 S4 that had low compression.
Old 02-06-04, 11:54 AM
  #8  
Refined Valley Dude

 
Amur_'s Avatar
 
Join Date: Oct 2001
Location: Kitchener, Ontario (Hamilton's armpit)
Posts: 2,283
Likes: 0
Received 2 Likes on 2 Posts
Originally posted by Josepi
Not afraid of the ATF, just haven't gone to the store to get it yet!


It doesn't have to be ATF. A heavy motor oil, like 20W50, will also do the job.
Old 02-06-04, 11:54 AM
  #9  
Former Moderator. RIP Icemark.
 
Icemark's Avatar
 
Join Date: Apr 2001
Location: Rohnert Park CA
Posts: 25,896
Likes: 0
Received 19 Likes on 19 Posts
I have only used oil or ATF to unflood a motor when it is spinning fast. You can hear it sound like the starter is spinning on a gear, but the motor is turning. That kind of fast.

99% of the time I have tried to start a flooded FC, you can just hold the gas pedal all the way down.
Old 02-06-04, 12:04 PM
  #10  
Despise Enmity

Thread Starter
 
Josepi's Avatar
 
Join Date: May 2001
Location: Richmond, VA
Posts: 2,420
Likes: 0
Received 0 Likes on 0 Posts
Originally posted by Icemark
I have only used oil or ATF to unflood a motor when it is spinning fast. You can hear it sound like the starter is spinning on a gear, but the motor is turning. That kind of fast.

99% of the time I have tried to start a flooded FC, you can just hold the gas pedal all the way down.
That describes the sound! Another question, do you all turn the motor over by hand and inject ATF in each housing trying to get each face of the rotors or just into one and it'll work?
Old 02-06-04, 12:08 PM
  #11  
Rotary Enthusiast

 
andrew lohaus's Avatar
 
Join Date: Jan 2003
Location: fl
Posts: 1,255
Likes: 0
Received 0 Likes on 0 Posts
when i did it i just puled the injector and ign. fuses and turned the motor over a few times after i put the atf in. put the fuses back. fired right up. make quite a stink tho.
Old 02-06-04, 12:31 PM
  #12  
Former Moderator. RIP Icemark.
 
Icemark's Avatar
 
Join Date: Apr 2001
Location: Rohnert Park CA
Posts: 25,896
Likes: 0
Received 19 Likes on 19 Posts
Originally posted by Josepi
That describes the sound! Another question, do you all turn the motor over by hand and inject ATF in each housing trying to get each face of the rotors or just into one and it'll work?
pulled trailing plugs, cranked over by hand with a little squirt into each combustion chamber/rotor face.

Then put the plugs back in and cranked it up on the first try.
Old 02-06-04, 12:39 PM
  #13  
Despise Enmity

Thread Starter
 
Josepi's Avatar
 
Join Date: May 2001
Location: Richmond, VA
Posts: 2,420
Likes: 0
Received 0 Likes on 0 Posts
Old 02-06-04, 02:39 PM
  #14  
knowledge junkie

 
vaughnc's Avatar
 
Join Date: Mar 2001
Location: Atlanta, GA
Posts: 5,595
Likes: 0
Received 6 Likes on 4 Posts
A bit simpler way than above.

The bodyshot next to Mazcare in Atlanta hired some dum@$$ who moved my car 5 feet & turned it off without full warmup. That's the "I got 0 compression, the engine just goes wrrrrrrrrrr instead of chug chug chug when craking" only ATF will fix this problem" type of flooding.

A pump can, ATF, & rubber hose is what I used. I think most rotaries have a nipple on the intake manifold you can hook up to. Here's the one on a 2nd gen highlighted in Redish Pink:



6-9 pumps, 8-12 sec of cranking and she starts right up.


Last edited by vaughnc; 02-06-04 at 02:43 PM.
Old 02-06-04, 02:58 PM
  #15  
Eats, Sleeps, Dreams Rotary

iTrader: (1)
 
Turbonut's Avatar
 
Join Date: Feb 2002
Location: NJ
Posts: 3,965
Received 54 Likes on 44 Posts
Used the ATF just about every spring since 1993 ('89TII). After the car sat for the winter and if I neglected to start it up every couple of weeks, the engine would just spin, not flooded, but low compression. As soon as I turned the starter I could tell by the speed in which the engine turned over. No resistance. Could have been weak springs, but after a little atf, put plugs in and it would fire right up. Heavy smoke, then it would be fine. Even had compression tested and it was fine. Did put a new engine in 2002 (160,000 miles). Compression was over the minimum, but it was time. I injected the atf into the chambers with a medical syringe.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
doritoloco
New Member RX-7 Technical
7
09-05-15 12:41 PM



Quick Reply: Has anyone ever HAD to use ATF/oil to unflood a motor?



All times are GMT -5. The time now is 11:31 AM.