My ponderings of flooding
 

OK i know what flooding is, why it happens and how to avoid it. My understanding of the unflooding procedure was to remove the EGI fuse and crank the engine a few times for 3 or so seconds then reinstert the fuse and start it up. If this works then why do i read about people having to bring their car to a shop and/or remove the plugs. Is the egi trick fully effective, if not what is the most effective way to unflood the engine? I did alot of searching and googling and always came up with the egi trick, the deadly atf trick or an unclear explanation. Its been bothering me because im working with a rebuild that constantly floods, the egi trick starts her up but if this isnt effective could i be damaging my engine or just not running efficently?

A fuel pump cut-out switch is most "effective".
Pulling just the EGI fuse will sometimes kill the tach on some FC's.
This can get annoying.

If you flood the engine so hard it kill the spark plugs, there is really nothing you can do short of swapping in new spark plugs to get it running again.
Spark plugs with soaked electrodes of gasoline will not spark.
This is what's called an extreme flood.

No, I doubt you can really damage and engine trying to clear a flood.


-Ted

If the tach does die upon a fuse-pull-startup (in my experience), just shut it off completely and re-start it. The tach should be back to normal.

Thanks for clearing that up.

yea, if my tach dies after i pull the fuse, i just shut it off while rolling like 10mph and pop the clutch in gear.

If you are pulling fuses to clear a flood, pull the top two fuses on the fuse block under the hood.
This will prevent the tach dying 100% of the time when doing this.


-Ted

Or, get an Rtek7 ECU upgrade and never pull fuses again with an S4 :)

I prefer my fuel pump cut-out switch.
Cheaper, more reliable (what do you do when your TPS is acting up and the ECU doesn't know you're at WOT?), and easier to install...


-Ted

i read about removing the check valve in the pump to allow the residual pressure to bleed back into the tank when the car sits, i was thinking about doing this but it seems that most people either don't know about this or haven't tried it. i wonder if it is an effective way to keep the cars from flooding.

also the ATF trick isn't deadly to clear a flood but it can be if you use it to try and clear carbon where you need to allow the ATF to sit in the chamber for an extended period.


usually people take their car to a mechanic when the EGI fuse trick fails and then they have an extremely flooded engine.