ok i know this is a noob question, but can someone explain to me how to thoroughly deflood my rx7. it seems im having hot start issues with my t2. and im thinking its just because my cars uber flooded. plz and thanks. ive already tried searching the forum and there isnt a write up of how to properly do it.

 

Hot start? Flooding a FC means it will not start and cranks like it has no compression. If it starts, it 'de-floods' by running. Please describe what happens when you start the car.

 

how to prevent don´t

but try the search by: "gas pump killswitch"

 

De-flood procedure:

Open underhood fusebox.
Remove EGI fuse.
Crank car for about 30 seconds or so.
Reinstall EGI fuse.
DO NOT PUMP THE ACCELERATOR.
Start car.

 

+1
if its a s5 hold the gas all the way down
and its quicker to take the plugs out first

 

+1

I think this method works for both the S4 and S5. However, I think on the S5 you can just floor the pedal and crank it over to accomplish the same task via ecu. Anyone want to confirm this? I'm still a roto newbie so I'm not going to say "this is how it is".

 

Yeah, I'm not sure if holding the pedal down works, I just put a fuel cutoff on my old S5 as soon as I got it.

 

Sometimes removing the leading spark plugs are required so as to blow the excess fuel out of the rotor housings. When deflooding, sometimes you go through the same process a series of times before replacing the fuse pulled on an S4 and trying to actually start the car.

 

It's been almost 5 years since I've owned an S4. Haha. I forgot how annoying it got.

 

Yes, holding the gas peddle to the floor will cut the fuel during start-up on S5 model cars.

 

My rx7 factory manual states put pedal to floor, if no start and incase of engine flooding. Its an 87 so I believe you can do it for the s4's also.

Also after you take that fuse out it took me cranking on if for at least a minute before i could get mine started when it got flooded.

 

sorry double post.

 

well what happens is that i bought my 88 t2 recently and the previous owner installed a switch to the egi comp fuse under the hood that leads all the in the cabin...so with that being said i have to go through a process to start the car (crank, flip switch on, and gas) im assuming that since im pressing on the gas that im injecting fuel manually??? but the problem isnt with a cold start, because when i let it run to operating temperture and THEN turn it off. as soon as i try to restart the car the process is harder to execute. idk why. and thats where i flood the engine if it takes multiple tries to start the car...get what im saying??

 

Use that switch to turn the car off. Flip it, and let it sputter to a stall. Will burn off any excess fuel being pumped. And usually, the switch is wired to the fuel pump.

 

do a compression test. hot starting issues can be caused by chipped/cracked compression seals.

 

i replaced the switch with the regular fuse. and same results happen. easy to start when cold but near impossible when hot

 

i dont know where to get a compression test in my area. i heard mazda dealership can but its not that accurate???

 

go buy a compression gauge for 20 bucks from a part store, read how to perform the test properly.