Deflooded by removing the fuel pump fuse
12-12-2011, 10:09 PM
#26
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I'm giving up, engine is flooded, having it towed. Mine's an '04 with an '09 engine. Not sure how it flooded, I didn't move it; drove it home from work (interstate for 20 minutes) on Friday, turned it off like I do every day. It sat all day Saturday, but it's sat without cranking for a whole week before and been fine. But Sunday afternoon, it wouldn't crank. Definitely flooded - but how? My Mazda mechanic said it just happens sometimes, especially when the weather turns cold. Really? I'm very careful with it, I've owned 3 RX7's, I know not to turn the car off cold. Worse still, nothing worked. Spent an hour removing and replacing the fuel pump fuse, tried cranking with gas pedal to the floor to clear it, then put the fuse back in and tried to start it without my foot on the gas. Tried feathering the gas pedal. Tried letting up on it a bit to give it some air. It started 3 times, each time without my foot on the gas, but it died quickly each time. Frustrating. I'm having it towed to the mechanic tomorrow. Anybody have any ideas on why it might have flooded?
12-13-2011, 12:35 PM
#27
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Spent an hour removing and replacing the fuel pump fuse, tried cranking with gas pedal to the floor to clear it, then put the fuse back in and tried to start it without my foot on the gas. Tried feathering the gas pedal. Tried letting up on it a bit to give it some air. It started 3 times, each time without my foot on the gas, but it died quickly each time. Frustrating. I'm having it towed to the mechanic tomorrow. Anybody have any ideas on why it might have flooded?
12-27-2011, 12:16 AM
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Okay guys, I need help. I really can't afford paying Mazda to deflood my car. I had a friend over to try a push start, we tried several times unsuccessfully. The first two were just a couple of dudes pushing. The last two we pushed the car from the rear bumper, oddly enough a Crown Vic is low enough to not cause any noticeable damage if a towel is used.
Anyway, got it up to 20 mph, no start. Is there some sort of trick I'm missing? Need the car to run by Wednesday morning.
Anyway, got it up to 20 mph, no start. Is there some sort of trick I'm missing? Need the car to run by Wednesday morning.
12-27-2011, 12:27 AM
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Is there any reason you haven't de flooded it by pulling the plugs and ESS connector,winding it over to clear the fuel . If your going to pull start it, use the supplied eye hook in your jack kit, and use a strap to tow it with, try 2nd or 3rd gear.
Last edited by FastFreddy61; 12-27-2011 at 12:31 AM.
12-27-2011, 12:32 AM
#30
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Is there some sort of trick I'm missing?
A good tip is to NOT push it with a Crown Vic.
Fair enough you can't afford a Mazda dealer, but "can't afford a towrope" is just plain hillbilly.
A good tip is to NOT push it with a Crown Vic.
Fair enough you can't afford a Mazda dealer, but "can't afford a towrope" is just plain hillbilly.
12-27-2011, 12:37 AM
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@ Stealth, I can afford a tow rope, but since everything is closed I'm not exactly sure where you expect me to purchase one. We also could not figure out where to attach the rope to the pulling car.
12-27-2011, 12:46 AM
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The hook attaching orifice is in the upper left side of the honeycomb of your grill ,its about 1 1/2 square, pop that out and the hook screws into the chassis, more or less.
There is enough gas in the tank , the plug leads are on correctly ?
There is enough gas in the tank , the plug leads are on correctly ?
12-27-2011, 12:48 AM
#33
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The eye-bolts screw into threads on the bumper reinforcements, front and back. Look for the little plastic doors in the crosshatched black grille plastic.
Pulling the fuel pump fuse instead of flooring the gas can make a flood worse; if you've ever disconnected a gasline, you'll see how much fuel and pressure is in the system, even with no fuel pump running. All that fuel goes into the engine thru the injectors if you just pull the fuse. Flooring the gas cuts off the injectors, for a real chance at clearing fuel.
Fuse pulling is another old myth from the RX-7 community.
Pulling the fuel pump fuse instead of flooring the gas can make a flood worse; if you've ever disconnected a gasline, you'll see how much fuel and pressure is in the system, even with no fuel pump running. All that fuel goes into the engine thru the injectors if you just pull the fuse. Flooring the gas cuts off the injectors, for a real chance at clearing fuel.
Fuse pulling is another old myth from the RX-7 community.
12-27-2011, 12:51 AM
#34
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I moved it ten feet, it was 40* outside. I just assumed that since it never flooded yet it wouldn't flood then. Should have driven around the block. I knew better.
I can smell the gas coming out of the exhaust after cranking it earlier, saw smoke coming out from the failed push attempts.
12-27-2011, 01:04 AM
#35
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It's probably flooded again from the failed start attempts,I would start from scratch, do the recommended de flood , clean and dry the plugs. Making sure when you wind it over there isnt fuel coming out the plug holes. Make sure the plug leads are on the correct plug.Throw the battery on charge for a few hours.Start.Because the battery was disconnected, the motor wont idle smoothly for a few drive cycles.
12-27-2011, 09:24 AM
#36
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The eye-bolts screw into threads on the bumper reinforcements, front and back. Look for the little plastic doors in the crosshatched black grille plastic.
Pulling the fuel pump fuse instead of flooring the gas can make a flood worse; if you've ever disconnected a gasline, you'll see how much fuel and pressure is in the system, even with no fuel pump running. All that fuel goes into the engine thru the injectors if you just pull the fuse. Flooring the gas cuts off the injectors, for a real chance at clearing fuel.
Fuse pulling is another old myth from the RX-7 community.
Pulling the fuel pump fuse instead of flooring the gas can make a flood worse; if you've ever disconnected a gasline, you'll see how much fuel and pressure is in the system, even with no fuel pump running. All that fuel goes into the engine thru the injectors if you just pull the fuse. Flooring the gas cuts off the injectors, for a real chance at clearing fuel.
Fuse pulling is another old myth from the RX-7 community.
thanks for clarifying that.
12-27-2011, 09:08 PM
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Well, the trick was to pull the car 1/4 mile in second until it expelled all the gas stuck in the engine.
That was ridiculous. A full 3 gallons of gas down the drain and all that headache. Oh well, now I know it really does get cold enough here to flood the engine. Car seems to be working as before after driving it for 16 miles around town. At one point the entire electrical system went down, not sure if the engine stalled or what.
So, sometimes it take a long distance to deflood the 8 while being towed. Definitely don't push it.
That was ridiculous. A full 3 gallons of gas down the drain and all that headache. Oh well, now I know it really does get cold enough here to flood the engine. Car seems to be working as before after driving it for 16 miles around town. At one point the entire electrical system went down, not sure if the engine stalled or what.
So, sometimes it take a long distance to deflood the 8 while being towed. Definitely don't push it.
12-30-2011, 04:33 PM
#38
Huge hole is huge
The eye-bolts screw into threads on the bumper reinforcements, front and back. Look for the little plastic doors in the crosshatched black grille plastic.
Pulling the fuel pump fuse instead of flooring the gas can make a flood worse; if you've ever disconnected a gasline, you'll see how much fuel and pressure is in the system, even with no fuel pump running. All that fuel goes into the engine thru the injectors if you just pull the fuse. Flooring the gas cuts off the injectors, for a real chance at clearing fuel.
Fuse pulling is another old myth from the RX-7 community.
Pulling the fuel pump fuse instead of flooring the gas can make a flood worse; if you've ever disconnected a gasline, you'll see how much fuel and pressure is in the system, even with no fuel pump running. All that fuel goes into the engine thru the injectors if you just pull the fuse. Flooring the gas cuts off the injectors, for a real chance at clearing fuel.
Fuse pulling is another old myth from the RX-7 community.
12-31-2011, 08:53 PM
#39
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De-flooding the RX8
While I totally agree it makes no sense to take out/replace the fuel pump fuse, it was the only way I could get my '04 (with an '09 engine) to spark after flooding. Technically, flooring the gas pedal should shut off the gas flow and allow you to clear the flooding. But I got mine to crank 3 times (died quickly, spark plugs and wires needed to be replaced) - each time, ONLY after pulling the fuel pump fuse, trying to start it (like others who have posted, had to hook up battery cables to another car for juice), then replacing the fuse and trying to start it again. If my plugs and wires hadn't been iffy, I think I could have gotten it started.
No clue why the fuse makes a difference, it doesn't make sense, mechanically speaking. But personal experience says, give it a try if you're flooded.
Also put in a different kind of plugs with a cross cut, allows fuel AND oil to flow freely and is supposed to help prevent flooding. We'll see.
No clue why the fuse makes a difference, it doesn't make sense, mechanically speaking. But personal experience says, give it a try if you're flooded.
Also put in a different kind of plugs with a cross cut, allows fuel AND oil to flow freely and is supposed to help prevent flooding. We'll see.
Last edited by kaceevh; 12-31-2011 at 08:55 PM. Reason: need to add something
12-31-2011, 09:01 PM
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side note
Side note: I did keep the gas pedal to the floor when the fuel pump fuse was out and tried cranking it 3 or 4 times, 10 second intervals with the fuse out. Then I replaced the fuse, tried starting it without touching the gas pedal - fired first time, but then died. Went through this three times. Went through the whole procedure again, flooing the gas and cranking it while fuse pump fuse was out, but this time tried to start it with the pedal to the floor. No luck. I know, it makes no sense. If anyone figures out what that fuse has to do with it, let me know.
Still a die hard Rx8 fan, owned 3 Rx7's before this Rx8. These cars have to be taken care of, handled carefully, but they're worth it.
Anybody have any info on the new Rx9 I've been hearing about?
Still a die hard Rx8 fan, owned 3 Rx7's before this Rx8. These cars have to be taken care of, handled carefully, but they're worth it.
Anybody have any info on the new Rx9 I've been hearing about?
10-22-2013, 03:05 AM
#41
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68,000 miles(new plugs +mazsport wires) on my baby and this is the first time i flooded her. Washed the car Sunday afternoon , started her up, backed her out then shut her off, finished washing her , started her up, drove back into the garage and shut her down, but had a gut feeling i should have let her run for 10 minutes before shutting her down. 
Today went to get in her and start her up, wouldnst start, kept cranking. Right then and there i knew i flooded my baby.
Long story short, the mazda deflooding technique didn't work, the only method that work was pulling the fuel pump fuse,wait 1 minute, crank her with out your foot being on the gas for 15 sec. Put the fuse back in , and start her up normaly. 1 st attempt she started but cut off, redid the process over , got in started her up normally, but had my foot 1/4 way down on the acclerator. She started and feathered the gas til she was fully operational. Let her stay on for about 10 minutes then took her out for a good long spirited drive.
Total time took about 1 hour because i was trying the Mazda way first , i think i could have shaved a good 30 minutes off if i didn't attempt the Mazda technique of deflooding the RX-8. Thank goodness I didn't foul up my plugs or kill my battery or starter!
I forgot who posted this procedure first, but through searching, I just want to say thanks to the valuable info. Hope this heps whoever needs it.
Today went to get in her and start her up, wouldnst start, kept cranking. Right then and there i knew i flooded my baby.
Long story short, the mazda deflooding technique didn't work, the only method that work was pulling the fuel pump fuse,wait 1 minute, crank her with out your foot being on the gas for 15 sec. Put the fuse back in , and start her up normaly. 1 st attempt she started but cut off, redid the process over , got in started her up normally, but had my foot 1/4 way down on the acclerator. She started and feathered the gas til she was fully operational. Let her stay on for about 10 minutes then took her out for a good long spirited drive.
Total time took about 1 hour because i was trying the Mazda way first , i think i could have shaved a good 30 minutes off if i didn't attempt the Mazda technique of deflooding the RX-8. Thank goodness I didn't foul up my plugs or kill my battery or starter!
I forgot who posted this procedure first, but through searching, I just want to say thanks to the valuable info. Hope this heps whoever needs it.
Awesome its works for me
12-03-2013, 07:05 PM
#42
I believe I flooded my engine the day before I left to Florida for a week on vacation. I came back home and my baby wouldn't start. I tried the Mazda way to get her going but I think it wont start because if it was flooded, then it sat that way for 8 days. 
Im going to try the fuse technique after I get my battery charged back up. The Mazda technique drained my battery for some reason. Any ideas on a different problem I may have encountered?
Im going to try the fuse technique after I get my battery charged back up. The Mazda technique drained my battery for some reason. Any ideas on a different problem I may have encountered?
12-04-2013, 06:27 PM
#43
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When these flood, they can fire and run a second or 2 a few times before they keep running. Just stick to the mazda procedure, but crank it 15-20 seconds with 10 or so between tries. It can take a while, but it will work.
i bought my 8 with a "bad" engine that turned out to just be flooded. It took about 2 hours of deflooding hooked to another vehicle (to keep cranking rpms high) to get it started.
From what ive read here and from listening to what the 2 mechanics that gave my car up for dead had tried, it seems the most common mistake people make is to give up on the mazda process and try starting normally, push starting, or feathering. This only un-does any deflooding that had happened up to that point.
i bought my 8 with a "bad" engine that turned out to just be flooded. It took about 2 hours of deflooding hooked to another vehicle (to keep cranking rpms high) to get it started.
From what ive read here and from listening to what the 2 mechanics that gave my car up for dead had tried, it seems the most common mistake people make is to give up on the mazda process and try starting normally, push starting, or feathering. This only un-does any deflooding that had happened up to that point.
12-09-2013, 05:32 PM
#44
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I remember doing the fuse trick in a couple of my RX7s, one was really stubborn and we push started it ... but I've always had it work ... good to know it works on the 8 just as well.
It teaches people the lesson of ALWAYS let it warm up before shutting it down.
I'll have to reinforce that aspect to my wife when we get her one of her own
It teaches people the lesson of ALWAYS let it warm up before shutting it down.
I'll have to reinforce that aspect to my wife when we get her one of her own
12-16-2013, 11:26 AM
#45
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Flooded my '06 RX-8 Shinka SE for the first time on Thursday night and haven't been able to start it since. Yes, moved it from one spot in the driveway closer to the house, not thinking about it. She's had brand new coils, ignition, etc, within the past 6 weeks, with around 125K on the clock.
I've tried the pedal to the floor method, along with the removal of the fuel pump fuse. She still refuses to start. Sounds like she's teasing me, but thats as far as it gets. I've tried in 8-10 second intervals with a few minutes inbetween to avoid starter motor overheating/burnout.
I called the Stealership this morning and was told that I need to repeat the process on and on as it could take about an hour of this rinse, lather, repeat, BS.
Any other ideas? Or is there anyone in the Fort Worth, TX area that would like to pass by to help me out? I don't expect anyone to do it for free. I just begrudge paying the Stealership any more money when they've just had about $1200 out of us!
I've tried the pedal to the floor method, along with the removal of the fuel pump fuse. She still refuses to start. Sounds like she's teasing me, but thats as far as it gets. I've tried in 8-10 second intervals with a few minutes inbetween to avoid starter motor overheating/burnout.
I called the Stealership this morning and was told that I need to repeat the process on and on as it could take about an hour of this rinse, lather, repeat, BS.
Any other ideas? Or is there anyone in the Fort Worth, TX area that would like to pass by to help me out? I don't expect anyone to do it for free. I just begrudge paying the Stealership any more money when they've just had about $1200 out of us!
05-23-2014, 03:11 AM
#46
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hey guys i have a 2007 mazda rx8, first my car started going out on me (weird exhaust noise, had it in cruise control and started losing power, pulled over turned it off and didn't turn back on) connected it to my ethos scanner code p0301 came up so i tuned it new BHR ignition coils, new ngk spark plugs and new ngk plug wires. Got a new battery bc my old one was no good. tried staring it but it won't it just cranks! think its flooded!!!!!! help, since its an 2007 will pulling out the gas pump fuse method work on it..???????? last time it flooded dealer charged me 400 for deflooding it….
05-23-2014, 04:50 AM
#47
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06-05-2014, 12:32 PM
#48
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You can also disconnect the fuel pump cable which is located right under the left side passenger seat.
Just pull the left side passenger seat up till it pops out and you'll see the cables going to the fuel pump, might be a little easier if someone doesn't want to play with the fuses.
Just pull the left side passenger seat up till it pops out and you'll see the cables going to the fuel pump, might be a little easier if someone doesn't want to play with the fuses.
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