Notices
RX-8 Discussion General discussion about the RX-8 that doesn't fit in one of the specialty forums.
Sponsored by:
Sponsored by: CARiD

Are you turning your engine off correctly!?!? I'm sure 95% of you are not!

Old May 4, 2006 | 08:09 AM
  #101  
Skythe's Avatar
Lascivious Post Whore
 
Joined: Nov 2005
Posts: 521
Likes: 0
From: Tampa, FL
Originally Posted by MazdaManiac
I know that the two or three other people that I have seen do this procedure do it incorrectly, so that may be the case with others that have tried it and still ended up flooded.
Despite what the manual or other materials might say, you need to kill the motor before the revs reach idle. That is to say, while it is still winding down from 3k or so and passing 1500 RPM or above.
If you wait for it to hit idle again, the PCM starts shooting a ton of fuel to smooth the idle out and maintain the cold-start enrichment. The anti-buck routine is still running when it is winding down and the injectors are cut, so this is when you want to kill the EFI.
Is EFI something I can catch from unprotected sex? Is it anything like ED?
Reply
Old May 4, 2006 | 08:21 AM
  #102  
Paul_in_DC's Avatar
Rotary Public
 
Joined: Dec 2004
Posts: 1,512
Likes: 2
From: Northern Virginia near DC
Turn key to "Off" position and walk away. It's worked for 25,000 miles so far.
Reply
Old May 4, 2006 | 01:25 PM
  #103  
Aipex8's Avatar
X e p i A
iTrader: (1)
 
Joined: Feb 2006
Posts: 2,015
Likes: 5
From: Vancouver, WA
I'm with MazdaManiac with this one (after re"search"ing the issue on the forum when I first purchased the car). My dealer also told me to always rev to 3K and shut down while there, but he's a sales guy and has never owned a rotary and told me several other incorrect things during the same conversation (this is my 2nd, I used to own an FD, although that had a turbo timer, so the shut off procedure was obviously different). So, if the engine is not warmed up to normal operating temp, I rev to 3K (no higher) for 10 seconds, let revs fall and turn the key right before 1.5K. If the engine is warm, I shut it off like I would any other car.
Reply
Old May 6, 2006 | 02:19 PM
  #104  
DOMINION's Avatar
I don't buy Kool-Aid
 
Joined: Apr 2004
Posts: 8,823
Likes: 2
From: Vegas Baby!
Originally Posted by MazdaManiac
I know that the two or three other people that I have seen do this procedure do it incorrectly, so that may be the case with others that have tried it and still ended up flooded.
Despite what the manual or other materials might say, you need to kill the motor before the revs reach idle. That is to say, while it is still winding down from 3k or so and passing 1500 RPM or above.
If you wait for it to hit idle again, the PCM starts shooting a ton of fuel to smooth the idle out and maintain the cold-start enrichment. The anti-buck routine is still running when it is winding down and the injectors are cut, so this is when you want to kill the EFI.
Its BS. bro. I'm telling ya. I got this down to a T and my car flooded 2 tims
Reply
Old Apr 21, 2017 | 12:22 PM
  #105  
KingDevontheMagnificent's Avatar
New Member
 
Joined: Jun 2015
Posts: 4
Likes: 0
From: Boston, Massachusetts
Originally Posted by SoFL_RX8
If you read that handy little booklet on how to operate you vehicle, the MAN-U-AL (I know its a foriegn word for some) it states that one should rev to 3.5k for 1 second and shut off to let excess fuel and emmisions spin out of the engine via enursia, in order to prevent flooding upon next start up. This is also a preventative measure when your engine has not been run long enough to reach proper operating temps.

Its all there in your manual... if this is news to you, you obviously need to go read it.
Haha. And I suppose "inertia" is a foreign word for others.

But solid info, well said.
Reply
Old Apr 21, 2017 | 12:25 PM
  #106  
Love_Hounds's Avatar
Registered
 
Joined: May 2014
Posts: 434
Likes: 20
From: CT
Originally Posted by KingDevontheMagnificent
Haha. And I suppose "inertia" is a foreign word for others.

But solid info, well said.
You corrected someone's spelling 11 years after they made the mistake?
Reply
Old Apr 21, 2017 | 12:44 PM
  #107  
KingDevontheMagnificent's Avatar
New Member
 
Joined: Jun 2015
Posts: 4
Likes: 0
From: Boston, Massachusetts
Yeah, that's gotta be a record.
Reply
Old Apr 21, 2017 | 04:44 PM
  #108  
jorlanjm's Avatar
Registered
 
Joined: Oct 2016
Posts: 198
Likes: 2
From: San Diego California
this is nothing new....i heard about this even when i had my RX7...somebody made this up to sound cool...but its actualy bad for the engine...

The manual did say rev at 3000 rpm for 10 seconds when your engine is still cold then let the needle go to idle then shut it off...this is to reduce risking flooding the engine...someone probably read this and thought it be cool just doing it all the time and make himsound like a rotary expert...but actually has no basis

Last edited by jorlanjm; Apr 22, 2017 at 10:38 AM.
Reply
Old May 11, 2017 | 10:26 AM
  #109  
TomX8's Avatar
Registered
 
Joined: Jun 2015
Posts: 192
Likes: 0
To me this sounds like total bullshit. When the engine is warm, the housing and rotors are so hot that they simply evaporate any left gasoline on the surfaces. As you shut down the engine, it doesn't shut down within an rpm. It takes a small second to completely stop rotating. Takes it that the engine spins 800rpm on idle, which is /60 = 12 times per second / 3 = A face of the rotor rotates 4 times 360 degrees in the housing.

I would believe that sucking in air without fuel and pushing this air without fuel 4 times would be sufficient to push out any unburnt fuel, if there even was any excess fuel because the engine runs stoic on Idle, so...

I have only flooded my engine once, and that's when I moved the car literally 5 meters and the engine ran for 5 seconds. The housing and rotors themselves were still cold and soaked in gasoline from the extra rich mixture. Now only then it makes sense to do this. But if the engine ran for already 1 minute, you can freely shut it down without revving it like a stupid ricer. I frequently start my car cold at the office, drive 500 meters / 1 minute and park the car at the supermarket for like 5 to 10 minutes. It starts even better than it does at the office.

Dealerships are full of tools themselves. I had one admit that they rely on information from RX8Club and were like "hurr durr, your engine lost compression", because they couldn't start it. Neither could I, so I disconnected the battery and reset the ECU. Reconnected the battery and the car started on a whim. Dealership was flabbergasted, because they couldn't identify that there is a faulty sensor that makes the car run richer than it should, and by resetting it to factory defaults it ran just fine. Until it relearned again...

I would advise anyone spending money on an escort instead of dealerships, because then atleast you get fucked the right way.
Reply
Old May 11, 2017 | 12:30 PM
  #110  
Chibana's Avatar
The Michigan "WANKEL"
 
Joined: Mar 2007
Posts: 543
Likes: 0
From: Lansing, MI
Originally Posted by jorlanjm
this is nothing new....i heard about this even when i had my RX7...somebody made this up to sound cool...but its actualy bad for the engine...

The manual did say rev at 3000 rpm for 10 seconds when your engine is still cold then let the needle go to idle then shut it off...this is to reduce risking flooding the engine...someone probably read this and thought it be cool just doing it all the time and make himsound like a rotary expert...but actually has no basis
Yes. I get so tired of hearing this. Even the service person at the dealer told me to always do this. Yet my 2009 RX-8 manual clearly states that it's only necessary when the engine has not fully warmed up, which is easy to tell with the variable redline on the tach in the Series II.
Reply
Old May 12, 2017 | 05:57 AM
  #111  
TomX8's Avatar
Registered
 
Joined: Jun 2015
Posts: 192
Likes: 0
Originally Posted by Chibana
Yes. I get so tired of hearing this. Even the service person at the dealer told me to always do this. Yet my 2009 RX-8 manual clearly states that it's only necessary when the engine has not fully warmed up, which is easy to tell with the variable redline on the tach in the Series II.
IKR, as if some bonehead with a wrench knows better than the engine engineers in Japan.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Jesus Martinez
Series I Tech Garage
44
May 6, 2025 08:09 AM
Audio Concepts ATL
New Member Forum
21
Sep 26, 2021 01:59 PM
vapor2
West For Sale/Wanted
11
Nov 3, 2020 03:38 PM
Eirulisse
New Member Forum
13
Aug 15, 2015 12:34 PM
ironj221
Series I Trouble Shooting
2
Jul 16, 2015 10:16 PM


Thread Tools
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -5. The time now is 02:50 PM.