motoxguy1520

so i got a s5 turbo block with s4 electronics and stuff but i got a s5 tb with s4 tps. when it floods can i floor it to unflood it? or will it just flood more

beefhole

iTrader: (29)

Depends on your ECU. But if you want piece of mind pull the EGI fuse (You mentioned S4 electronics).

fcturbo2

pull EGI fuse, crank it for 10-15 secs @ WOT, put the fuse back and try to start it...

NZConvertible

It doesn't matter what car or engine you have, the correct way to unflood an engine always involves holding the throttle fully open while cranking. But what you're thinking of is cutting the injectors during full-throttle cranking, which only the S5 ECU does.

As a first easy attempt, simply push the gas pedal down and crank it (as per the S4 owners manual). If that doesn't work then pull the EGI fuse and try again.

Touya

on an 91 s5, where is the EGI fuse if there is one. My car flooded also but after multiple attempts to pull the plugs and crank its still not working. Anyone?

motoxguy1520

its in the fusebox in the drivers side strut tower , the second fuse down from the top.
ok so the s5 ecu triggers the injectors to stop working, i thought it might be the tb or somthing. thanks

inflatablepets

Put 'er to the wood and crank it up.

NZConvertible

Pulling the fuse won't help you, as the ECU already cuts the injectors for you. You need to pull the leading (lower) spark plugs out and crank it over a with the throttle fully open to clear it out, then use a small oil squirt can to put one squirt of engine oil into the chambers though the spark plug holes. Replace the spark plugs are try to start it normally.

webmonk

This isn't really an unflooding procedure, but I got my first T2 last weekend (moved up from a 1st gen) and struggled with the flooded start problem the first few days. It seemed like no matter how I tried to start it the only thing that worked was pulling the fuse. Then, I borrowed a technique for shutting down aircraft engines that so far has worked wonders for me.

Just before I turn off the key I rev the engine slightly so that it will continue to rotate for a few seconds after the ignition has been turned completely off with the idea that maybe all of the remaining fuel/air will leave and no more will be let in. The next time I start the engine it fires right up. Since I've started doing that I haven't once had to pull a fuse.

Granted, I don't know enough about this engine yet to know if what I'm doing is grounded in science or if it just makes me feel better and I'm getting lucky (and possibly harming my engine). I guess time (or most likely someone on this forum) will tell.

wreckless

well that is accurate about the aircraft engine, but the purpose is different.

red rex

pull egi fuse, go and turn car over with foot to the floor for 10-15 seconds. repeat this about 6-7 times. put the fuse back in and try to start it, remember its not gonna start up and idle like normal you gotta give it some gas and it will smoke..alot. that is what i did to my car when it was flooded and it fired up after that many times. its very hard on your battery so hook a battery charger up to it while your doing these steps. If it doesn't work keep trying it will eventually go.

NZConvertible

You do not need to do it anywhere near that many times, and for no longer than 10 seconds at a time. All you'll do is overheat your starter motor. If it doesn't start after two or three attempts, pull the plugs and use a little oil.

Some of you guys need to learn a little mechanical sympathy...

WAYNE88N/A

Lol, you mean like, "Don't use such a large hammer?"...

Dang NZ, it must be around 4 in the morning there

As an "on topic" note, I've NEVER been able to restart my flooded S4 without keeping the pedal mashed to the floor. And another semi-on topic note, since the rebuild (20k+ miles ago), with the higher compression, she's never flooded yet.

Correlation?

RexRyder

iTrader: (10)

i just used to push my **** down the hill. (only works if u live on a hill)

NZConvertible

11:15am when I posted that.

And nor should you be able to. Holding the throttle open has been the correct way to unflood an engine since just after they were invented. It's funny how many times I've seen people post unflooding techniques involving fuses, spark plugs, ATF, etc and still miss this vital step out.