How to fix flooding issues
 

Just like the title states, please let me know

My 87tii with a jdm 91 tII keeps flooding.

compression test. clean your injectors. fuel pump kill switch (band-aid)

If the ECU is an S4 you can depin pin 3B and allow the AFM to control the fuel at startup which will help to greatly reduce the amount of fuel used.

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Where is 3b at?

Smallest plug, bottom row, far right position. Wire color is Black/Blue.

Here is it located at? Ecu? Or fuse box

The E C U.

where is the ECU?

Europe!

uranus?

ok, that's my postwhoring limit for the year :)

Lol sorry guys I was actually on the run when I sent the last message and I will play with it once I get home.

Sorry to bring an old thread back to life, but will depinng 3b throw a code?

-Shaun

No it won't.

What is the 3B pin for? Its completely safe to remove i assume since Satch said so?

It's the Start Signal which the ECU receives so it could decide which of the two fuel maps to choose from. If the ECU doesn't receive this specific signal then the AFM controls how much fuel is used on start up which tends to be much less than what the ECU would select. It would make starting the car rather hard "if" the engine is very cold due to low temps as more fuel is needed in this situation then the AFM will incorporate during start up. And I garnered this info from HAILERS when he wasn't looking.

Thanks. My injectors are starting to leak (motor is 100% healthy) need a temporarily fix while i send out my spare injectors to be cleaned by witchunter. I'll pull the wire tomorrow to see if it helps. Pissed...just did a fresh oil change and this flooding is destroyin my fresh oil. errr i know the flooding will still occur but hope it helps my starts

I did this on my car 20 years ago when the previous owner had it.

We cut the b/w wire coming out of the ECU that goes to the fuel pump relay. This wire is only active during starting. We hooked it to a brake light switch(oem mazda part) and screwed it into the blank hole(on stick shift cars) above the gas pedal that is normally for the downshift solenoid switch on automatics. Now when the car will not start, simply floor the gas pedal like you do on '89 and later cars. What's that you ask...what about full throttle,does the fuel pump shut off?...As mentioned at the outset this wire is only active during starting. It has worked without fail for 20 years.

I got the fix from a Mazda zone rep when I used to be a service manager. It was never a problem until California started using winter gas. First it only occured in the winter time, now its anytime. This car is on its 3rd engine and has had several injector blueprint cleanings, sometimes they are leaking sometimes they are not, it does not seem to make a difference.