Turbocharged2

Hey i was reading about the whole oil debate, i am in utah which means it gets alot colder so not sure what weight oil to use, anyway you guys keep talking about flooding your car then changing the oil right after and it looking like water or some crap so ok how does one flood his car in the first place? also what do you do so as not to flood your REX what causes it to flood so on and so forth i am fairly new to the internals of RX7 please help me out. Thanks guys

dr0x

Usually leaky injectors or shutting the car off during the cold start will flood it. Dont turn your car on drive for like 30s then shut it off, it shouldnt flood then. If you have leaky injectors, get them cleaned and flow tested. Replace if necessary.

Icemark

Yeah the term flooding means too much fuel in the motor and the car won't start because of it.

HeffBoost

If you flood it badly or often the oil will get poluted with fuel and the viscosity probably drops like a stone. Best to change the oil if it happens. Oil is the lifeblood of a rotary.

Sidenote: Extreme flooding can also reduce compression quite a bit temporarily. All the oil in the chambers that help make compression gets washed off into the oil.

fong

iTrader: (77)

can we use the term "flood" in the case of water seal got broken, and coolant goes into engine, and cause tons of smokes. in this case, sometimes, the car can be started again, but smoke like on fire.

of cause, fuel flooding also cause some smoke too. right?

TheHunt

Yes. After you start the car after it has been flooded, you're going to get a crap load of white smoke out the tailpipes.

Icemark

The term flooding actually comes from the days of carbed piston engines... meaning too much fuel to even light by a spark plug.

So after 80 years, changing Flood or Flooding to mean something else, will just result in more confusion.

Now there is also the car got flooded, meaning the car itself was underwater...

But that is different than the engine being flooded or flooding.

*edit
and yes, almost always if you have flooded the motor, it will result in major white smoke on start-up

fong

iTrader: (77)

in either case, flood means engine rebuild.

Icemark

not not at all... in 50% of the habitual cases, flooding is caused by leaking injectors... Something that replacing or repairing the injectors solves the problem.

only about 40% of the time habitual flooding is caused by low compression, which requires an engine rebuild.

BTW: another 5% is user error, and the final 5% is a failure in the ECU.

saltlakebay

Me and most of the other guys here in Salt Lake use 10/30 in the winter and 20/50 in summer. Drop me a line sometime if you ever need help. Many of us guys hang out.

Were also going to try to get a Dyno day set up soon

Dave (d.chapple@attbi.com)

RotaryForce13B

I think that you meant black smoke if Flooded from fuel. White smoke would be an indication of burning coolant.

fong

iTrader: (77)

I thought it should be blue smoke if it is fuel flooded. black is burning oil. and white is for coolant.

dr0x

Blue = oil.
Black = fuel.
White = coolant.