Notices
Series I Trouble Shooting This is the place to learn more about or discuss any issues you're having with your RX-8

Might have a flooded engine, but no trick works!

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 02-18-2020, 12:50 AM
  #1  
Registered
Thread Starter
 
beyond the grave's Avatar
 
Join Date: Apr 2012
Location: Lafayette, LA
Posts: 90
Received 0 Likes on 0 Posts
Might have a flooded engine, but no trick works!

I've been having issues with my 8 all this weekend. I started it up, it ran for a minute or so, then died. I figured it had flooded so, I've been trying everything trick I can, plus a new battery and spark plugs.
I've tried the fuel pump fuse, clutch sensor, air flow sensor, pulling the Sparks, and nothing has worked. I've watch so many videos and tutorials. I saw one recommendation it leave the spark plugs out overnight and let everything air out so, that's where I am today


Anything else I can try before having it towed to the dealership and destroy my bank account?
Old 02-18-2020, 06:09 AM
  #2  
Registered
iTrader: (1)
 
Loki's Avatar
 
Join Date: Jun 2009
Location: Montreal
Posts: 7,729
Received 957 Likes on 835 Posts
Typically if a car is running it's not going to flood itself. It stalled for some reason, which may have caused it to flood, but the initial stall is a different problem which may or may be preventing you from starting.

Have you tried the deflood procedure with the gas pedal to the floor? You need to crank with the gas pedal to the floor for 10 seconds at a time 6-7 times, sometimes more, then gently raise your foot off the gas while cranking and it should start to catch.

​​​​​​
Old 02-18-2020, 06:49 AM
  #3  
Registered
Thread Starter
 
beyond the grave's Avatar
 
Join Date: Apr 2012
Location: Lafayette, LA
Posts: 90
Received 0 Likes on 0 Posts
Originally Posted by Loki
Typically if a car is running it's not going to flood itself. It stalled for some reason, which may have caused it to flood, but the initial stall is a different problem which may or may be preventing you from starting.

Have you tried the deflood procedure with the gas pedal to the floor? You need to crank with the gas pedal to the floor for 10 seconds at a time 6-7 times, sometimes more, then gently raise your foot off the gas while cranking and it should start to catch.

​​​​​​
i did.
I tried that, pulling the leading plugs only and trying to clean it out like that, pulling all the plugs and trying that, all with the fuel pump fuse out, the crank sensor pulled, and slamming the peddle to the ground approximately 10 times for around 10 second with 1 minute intervals.

I saw a video where a guy suggested putting a hair dryer in the intake for a bit to help dry it out.
Old 02-18-2020, 06:53 AM
  #4  
Registered
Thread Starter
 
beyond the grave's Avatar
 
Join Date: Apr 2012
Location: Lafayette, LA
Posts: 90
Received 0 Likes on 0 Posts
it MIGHT be the fuel pump, but it smells like it's getting fuel.
Old 02-18-2020, 10:40 AM
  #5  
Registered
 
speedieone's Avatar
 
Join Date: Aug 2016
Posts: 93
Received 21 Likes on 15 Posts
Liquid gasoline will not ignite which is why flooding occurs. Gasoline vapor will. Using a hair dryer to dry out a cylinder is totally asinine. You are converting a liquid to an explosive vapor that is looking for an ignition point (such as a hair dryer!). The de-flooding procedure is designed to move the liquid out of the cylinder and into the exhaust.
Old 02-18-2020, 10:54 AM
  #6  
Registered
iTrader: (1)
 
Loki's Avatar
 
Join Date: Jun 2009
Location: Montreal
Posts: 7,729
Received 957 Likes on 835 Posts
Lol hair dryer. You know because air is free to circulate through the engine without it turning over.

So I don't think your engine is flooded. Have you had prior issues? Has it stalled on you before?

You need spark, fuel and compression to start an engine. Let's say you're OK on fuel, can you confirm the rest?
Old 02-18-2020, 11:44 AM
  #7  
Registered
Thread Starter
 
beyond the grave's Avatar
 
Join Date: Apr 2012
Location: Lafayette, LA
Posts: 90
Received 0 Likes on 0 Posts
Originally Posted by Loki
Lol hair dryer. You know because air is free to circulate through the engine without it turning over.

So I don't think your engine is flooded. Have you had prior issues? Has it stalled on you before?

You need spark, fuel and compression to start an engine. Let's say you're OK on fuel, can you confirm the rest?
Yeah, that was the weirdest thing I found

I the only issue I had like this before was with my spark plugs cables detaching, and I changed those, the relays, and the spark plugs about 2 years ago. The clutch sensor was replaced prior to that by the dealership when it failed during the whole airbag recall thing. The only other thing Otheris that the catalytic converter has been bad since I got the car, and that's been probably 6-8 years now than that, it's been running fine.

I tried it this morning and it will try to start with the fuel pump fuse and the couch relay attached, but it won't fully start.
Old 02-18-2020, 12:30 PM
  #8  
Registered
iTrader: (1)
 
Loki's Avatar
 
Join Date: Jun 2009
Location: Montreal
Posts: 7,729
Received 957 Likes on 835 Posts
In many cases, catalytic converters go from bad to dead engine in 6-8 hours, so 6-8 years makes me wonder what is actually going on in there.

When you say it won't fully start, does that mean it has signs of life, not just free-spinning endlessly?
Old 02-18-2020, 12:57 PM
  #9  
Registered
Thread Starter
 
beyond the grave's Avatar
 
Join Date: Apr 2012
Location: Lafayette, LA
Posts: 90
Received 0 Likes on 0 Posts
Originally Posted by Loki
In many cases, catalytic converters go from bad to dead engine in 6-8 hours, so 6-8 years makes me wonder what is actually going on in there.

When you say it won't fully start, does that mean it has signs of life, not just free-spinning endlessly?
Yes, it'll turn over, and sputter for a bit. After a few tries, it'll catch, and attempt to start up for about 5 seconds or so.
Old 02-18-2020, 04:58 PM
  #10  
Modulated Moderator
iTrader: (3)
 
dannobre's Avatar
 
Join Date: Feb 2004
Location: Smallville
Posts: 13,718
Received 334 Likes on 289 Posts
If it's a MT then get someone to pull start it with you... even if it is really flooded it will start like that.

It won't run though if you don't have fuel or spark though...

Usually the best thing to do is check the fuel pressure and the spark....
Old 02-20-2020, 07:11 PM
  #11  
Registered
Thread Starter
 
beyond the grave's Avatar
 
Join Date: Apr 2012
Location: Lafayette, LA
Posts: 90
Received 0 Likes on 0 Posts
Originally Posted by dannobre
If it's a MT then get someone to pull start it with you... even if it is really flooded it will start like that.

It won't run though if you don't have fuel or spark though...

Usually the best thing to do is check the fuel pressure and the spark....
Its a MT. That's a good idea to try. I just replaced the started, and it SOUNDS better,but still not starting.
Old 03-04-2020, 02:05 AM
  #12  
Registered
Thread Starter
 
beyond the grave's Avatar
 
Join Date: Apr 2012
Location: Lafayette, LA
Posts: 90
Received 0 Likes on 0 Posts
So, I had to give up and had it towed to the local dealership. They are going to do a compression test on it and determine if the engine needs to be rebuilt.
Old 03-06-2020, 04:42 PM
  #13  
Registered
Thread Starter
 
beyond the grave's Avatar
 
Join Date: Apr 2012
Location: Lafayette, LA
Posts: 90
Received 0 Likes on 0 Posts
Just got the word back. Engine needs to be replaced
Old 03-06-2020, 04:54 PM
  #14  
Smoking turbo yay
 
UnknownJinX's Avatar
 
Join Date: Apr 2017
Location: BC, Canada
Posts: 3,105
Received 666 Likes on 592 Posts
Originally Posted by beyond the grave
Just got the word back. Engine needs to be replaced
Any exact numbers and figures? Just want to be sure.
Old 03-06-2020, 05:54 PM
  #15  
Registered
 
CaymanRotary's Avatar
 
Join Date: Sep 2017
Location: Cayman Islands
Posts: 1,912
Received 286 Likes on 261 Posts
Originally Posted by beyond the grave
Just got the word back. Engine needs to be replaced
Make sure you get a readout sheet. But if so... RIP.
Old 03-07-2020, 12:18 AM
  #16  
Registered
Thread Starter
 
beyond the grave's Avatar
 
Join Date: Apr 2012
Location: Lafayette, LA
Posts: 90
Received 0 Likes on 0 Posts
Originally Posted by UnknownJinX
Any exact numbers and figures? Just want to be sure.

I can ask them for a copy on Monday. Really freaking sucks. I love my rotary and was hoping to hold out until the fabled RX-9.

If so, the real question is if it's worth replacing, or putting a down payment on something newer. The AC needs work, and there's some paint and body damage that'll need to be addressed too.
Old 03-07-2020, 07:23 AM
  #17  
Registered
 
CaymanRotary's Avatar
 
Join Date: Sep 2017
Location: Cayman Islands
Posts: 1,912
Received 286 Likes on 261 Posts
Originally Posted by beyond the grave
I can ask them for a copy on Monday. Really freaking sucks. I love my rotary and was hoping to hold out until the fabled RX-9.

If so, the real question is if it's worth replacing, or putting a down payment on something newer. The AC needs work, and there's some paint and body damage that'll need to be addressed too.
It's easier to sell it. Though, depends on your budget and how much you love your RX8. Reman engine about $4000 + cost to do the swap and fix the other issues in your car. Could also hunt for a known good used engine if you are gambling man and save a couple thousand. Depends how good of shape the rest of the car is really.
Old 03-07-2020, 01:05 PM
  #18  
Smoking turbo yay
 
UnknownJinX's Avatar
 
Join Date: Apr 2017
Location: BC, Canada
Posts: 3,105
Received 666 Likes on 592 Posts
Originally Posted by beyond the grave
I can ask them for a copy on Monday. Really freaking sucks. I love my rotary and was hoping to hold out until the fabled RX-9.

If so, the real question is if it's worth replacing, or putting a down payment on something newer. The AC needs work, and there's some paint and body damage that'll need to be addressed too.
You'd be an old man if an RX-9 comes out, if it ever does. Personally I am not holding my breath, given how broke Mazda is.

Quite a few of people here moved on. Some to BMW, some to Miatas. Personally I'd like an LS powered car - complete opposite of an NA rotary.

Anyway, a shell is worth $1k if you wish to sell it. If your bodywork is not in the best shape, it will be less. As to if it's worth it to replace the engine to get it back up and running, that's a question only you can answer yourself. Reman is about $3k, and with labour and some miscellaneous stuff like the clutch(you may as well), that's $7k. The bodywork will have to be assessed by a body shop.
Old 03-08-2020, 12:41 PM
  #19  
Modulated Moderator
iTrader: (3)
 
dannobre's Avatar
 
Join Date: Feb 2004
Location: Smallville
Posts: 13,718
Received 334 Likes on 289 Posts
Did you try and pull start it?

If it is really flooded there will be really low compression from the fuel washing away the oil film.

I had a car that was in the 3's but even on all faces.... we pull started it and drove it around till it quit smoking and retested it and it was in the 8's hot.
If you did something that could have flooded it initially then that could be an option.
Or if an ignition or issue popped up that caused it..

I'm always a bit sceptical when they don't give you compression numbers.... cause of course they want you to get a new engine 😏


Old 03-09-2020, 01:32 PM
  #20  
Registered
Thread Starter
 
beyond the grave's Avatar
 
Join Date: Apr 2012
Location: Lafayette, LA
Posts: 90
Received 0 Likes on 0 Posts
Originally Posted by dannobre
Did you try and pull start it?

If it is really flooded there will be really low compression from the fuel washing away the oil film.

I had a car that was in the 3's but even on all faces.... we pull started it and drove it around till it quit smoking and retested it and it was in the 8's hot.
If you did something that could have flooded it initially then that could be an option.
Or if an ignition or issue popped up that caused it..

I'm always a bit sceptical when they don't give you compression numbers.... cause of course they want you to get a new engine 😏

So, the compression numbers are
Front Rotor 4.2, 5.0, 3.6
Rear Rotor 6.8, 7.9, 7.3

Old 03-09-2020, 01:57 PM
  #21  
Registered
Thread Starter
 
beyond the grave's Avatar
 
Join Date: Apr 2012
Location: Lafayette, LA
Posts: 90
Received 0 Likes on 0 Posts
I never did pull start it. I didn't have the time and kept just getting more and more frustrated
Old 03-09-2020, 02:32 PM
  #22  
Registered
 
CaymanRotary's Avatar
 
Join Date: Sep 2017
Location: Cayman Islands
Posts: 1,912
Received 286 Likes on 261 Posts
Originally Posted by beyond the grave
So, the compression numbers are
Front Rotor 4.2, 5.0, 3.6
Rear Rotor 6.8, 7.9, 7.3
If this was after deflooding on a hot engine its past toast. Sorry man... looks like serious engine damage...
Old 03-17-2020, 11:34 PM
  #23  
Modulated Moderator
iTrader: (3)
 
dannobre's Avatar
 
Join Date: Feb 2004
Location: Smallville
Posts: 13,718
Received 334 Likes on 289 Posts
If they tested it when it was flooded the test is close to useless really...

Doesn't look good.... BUT I still would have tried to pull start it 🙄
Old 04-18-2020, 09:28 AM
  #24  
Registered
Thread Starter
 
beyond the grave's Avatar
 
Join Date: Apr 2012
Location: Lafayette, LA
Posts: 90
Received 0 Likes on 0 Posts
So, I picked up my car from the dealership on Wednesday and was going to bring it to the house and was going to try and pull start it. After a bit of tinkering and a few pull start attempts, it came back to life! So far, it's been running great!
Old 04-18-2020, 09:30 AM
  #25  
Modulated Moderator
iTrader: (3)
 
dannobre's Avatar
 
Join Date: Feb 2004
Location: Smallville
Posts: 13,718
Received 334 Likes on 289 Posts
😁.....
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
DestLuck
Series I Trouble Shooting
5
02-14-2014 05:22 PM
ecuarep93
New Member Forum
8
10-15-2013 04:12 PM
Jewbin
Series I Trouble Shooting
13
01-14-2012 08:21 AM
babo
Series I Trouble Shooting
2
03-14-2010 11:27 AM
FLEAUX
Series I Trouble Shooting
6
11-24-2009 08:38 AM



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

Quick Reply: Might have a flooded engine, but no trick works!



All times are GMT -5. The time now is 08:31 PM.