picazo505

i got and 87 Turbo II and when i started in the morning is alraight then after i drive it for a while and i park it and try to start again the car sound like is flooded it takes a while to start ,is a pain in the ***, i even got a cut off switch for gas this is drivin me nut can this problem be fix??????????

JohnL

welcome to the world of the RX-7 and fuel flooding problems. Several reasons for this.... first off, you might have low compression in one of your rotors, this is common to flooding problems. Second, you most likely have one or more leaking fuel injectors so I recommend pulling all 4 and sending them for cleaning and flow testing. Third, could be your water thermo sensor also, this can cause some fuel problems also, make a homemade code checker to find out if yours is bad.

NZConvertible

The number one cause of flooding is residual pressure in the fuel system pushing fuel past leaking injectors. Other factors can contribute, but it usually boils down to injectors. Take them out and have the properly serviced by a professional. Do it ASAP! If they’re leaking, which is caused by crap stopping the pintle from properly seating, then your injectors will also be flowing poorly because of that buildup.

picazo505

right now i am around 9 to 10 on boost psi which injectors should i get , iknow that i dont have the stock injectors but i want to put some new one anyway since i got that freaking flooding problem

crasher2

send them out to be cleaned and flow checked, RC Engineering in Torrance, CA does it for about $25 each, not bad

morph000

I bought an AFM from Performance nexus and it fixed this problem completely !
Here's their site :

www.our.net.au/~pnt/afm/rx7_RX7.html

TheBigOne

you could fix your leaky injectors or just replace them with new one or i found my own solution and it works perfect.
in your trunk bay there is the power lines for the fuel pump.` located under neath the rug. find the black ground wire and cut it. extend the wires up towards your seat. connect an on/off switch(one that will stay off and stay on not spring back and forth). when your car is flooded turn the switch off. continue to start the car with the switch off. your car will eventuall start. when it does turn the pump back on WHALLA. fixes your start problem and helps your car from getting stolen.
now just hide the wires and install the switch somewhere and make it look clean.

NZConvertible

This is the wrong way to wire a fuel pump switch, the right way is to use the fuel pump relay under the steering column. This minimises volage drop by keeping cables around the same length. This is a band-aid however, not a fix.

TheBigOne

Well its a pretty damn good reliable band-aid. its been working in my car for the past 3 months and in my friends for the past 2 years.

von

I use the one under the steering stuff. Also I never have to use it because I have a series 5 and it just never floods. I heard that the ECU on the S4 is a major culprit.

NZConvertible

You've missed the point. Flooding is just one of the problems caused by dirty injectors. If you think your car's running at 100% with injectors that are so dirty they cause flooding, you're kidding yourself. A pump kill switch is not a fix. It merely masks one of the symptoms of dirty injectors.
Also, I turn my key and the car starts. That's as complicated as I want that to be!

StarionX

I'm sure you're correct about fuel injectors being a 'major' cause of flooding, but it's not the only cause.
I had all 4 injectors replaced with NEW Mazda injectors, but it did nothing to stop the flooding. I Installed the kill switch, and although it hasn't fixed the problem, it does allow me to start every time.

rx-7fc

how do you fix the problem with the water thermo sensor i think mine might have that problem

Anderson

Which wire int he relay is it.?? I was told the "Blkack wire with the white strip, but there are 2 of them, and one is bigger than the other? So which is the correct wire??

NZConvertible

It's a 6-pin plug with only 5 wires. The one in the middle on its own is the one you want.

von

About the ECU guys??? Can someone back me up. The S4 ecu sucks and floods the engine right?

NZConvertible

There appears to be a bug in the S4 ECU that causes the engine to flood if the engine is started and then turned off without letting it warm up. The next time you try to start it, whether a minute or a month later, it floods. However, in my experience, the motor doesn’t need to need fully warmed up. I do a <1km drive from work to get lunch most days. It has never flooded doing this. Also it doesn’t appear to flood if the ignition isn’t switched off. My car has stalled while cold countless times (a problem I’ve now fixed!), but has never flooded from this. However on three occasions I can remember, starting the car to manoeuvre it in the driveway or carpark has caused it to flood on restart.