RX7 RAGE

iTrader: (22)

I took readings on my engine which might be flooded and I got very low readings...4.2 in the front and 1.2 in the rear...does flooding cause this? I moved the car from the driveway to the street and shut it off right away. It was running fine before this happened so I might have to use the atf trick or push start it to get it to start right?

Rxmfn7

iTrader: (4)

Absolutely... why do you think flodded cars dont start? No compression.

RX7 RAGE

iTrader: (22)

thanks

AlmostRice

I did the same 3 weeks ago. Could not start it the next day. I left it for a week and used ATF. I used a syringe and put one squirt in each rotor. Started right away. Here are some instructions to fix it.

http://2ndgenrx7.freeservers.com/rp_unflood.html

RETed

YES!
Dirty trick for used engine sales creeps is to pour ultra thick oil into the engine and then take a compression check.
It also helps if it's really cold!

Gas washes this oil away.
You make the connection.


-Ted

jacobcartmill

iTrader: (6)

flooding isnt going to drop your compression numbers by 75psi...

coldfire

iTrader: (1)

maybe he means a reading in BAR?

still, 1.2 bar is crazy low...could someone explain how exactly that works? i mean how flooding an engine lowers compression?

NZConvertible

The oil on the chamber walls seals the compression in. Excess fuel washes away the oil, so the chambers are no longer sealed and can't build enough compression to start the engine.

4.2bar and 1.2bar would be 61psi and 17psi respectively, which sounds like a cracked apex seal on top of being flooded...

jacobcartmill

iTrader: (6)

thank you. see my above post.

RX7 RAGE

iTrader: (22)

ugh..cracked apex seal just from moving my car from the driveway to the street? is this possible? those readings were from a mazda rotary engine compression tester by the way.

jacobcartmill

iTrader: (6)

the original engine in my 91 NA blew when i was STARTING the car on a cold night after work.

RotaryResurrection

iTrader: (8)

You can flood a car to show no compression. Dump some oil or atf into the chambers and start it up. Expect smoke, hold the rpm's up a bit until it clears out. I bet it isn't blown or anything.

jacobcartmill

iTrader: (6)

dude, come on. 17psi? that is one ****** vicious flooding...

just unflood that bitch. drag it around a parking lot with all 4 spark plugs out and egi fuse out.

RX7 RAGE

iTrader: (22)

it was flooded after all...did the atf trick and it runs perfect again. thanks for the replies

RotaryResurrection

iTrader: (8)

Damn I'm good

to all the haters...

nanana na na na I told you so!

TII '87

Mazda rotary engine compression tester readings are in Kg/cm2, not in bars...

dunno if it's the same in the US, but in canada that's the way it's calculated

coldfire

iTrader: (1)

http://xtronics.com/reference/convert.htm

RotaryResurrection

iTrader: (8)

bar and kg/cm^2 is damn near the same thing...one is 14.7, one is 14.2 or so IIRC. using either one to calculate by, you won't be more than 5psi off on the other.

jacobcartmill

iTrader: (6)

1 kg/cm^2 is 14.22 psi

RETed

1 bar = 14.5psi
1 kg/cm^2 = 14.2psi


1 atm = 100kPa = 14.7psi


-Ted

RotaryResurrection

iTrader: (8)

I just heard that the price of rice in china has went up because of our findings in this thread.

Yay.

jacobcartmill

iTrader: (6)

yayyyy kevin landers yayyyy

Wankel7

Okie, now that the poster has his engine running again....

He should do a compression check again to see what it is now!

JAmes

RotaryResurrection

iTrader: (8)

me = teh winnar!

theone81

i got the same problem im running 20 Psi. Im have a nasty flood!!!!!!