Rx8 flooding problem


Asked by Jun 04, 2017 at 11:45 AM about the 2004 Mazda RX-8 GT

Question type: Maintenance & Repair

Ok so I'm having issues with an rx8, at first I
thought it may need a rebuild but as of now I'm not
sure. I know that rx7s had leaky injectors that's
what I'm leaning towards I'm not sure how
common it is for rx8s.

Ok, so on with the symptoms. I bought the car
flooded, if I shut it off after it's warmed up it will
start 2hrs later w/o fiddling with the accelerator or
fuel. This start up takes approximately 5-8seconds.
If I shut it off warmed up it will start right back up...
If I push the accelerator straight to the floor and
slowly lift. This takes 8-12 seconds. If I let it sit for
more than 5 mins it becomes much harder to start
it takes putting the peddle to the floor for 8
seconds then turn car off, then again peddle to the
floor then lift off. This takes 20-30seconds.
Anything between 20mins and 1hour it becomes
almost impossible w/o doing a complete deflood
procedure.  Also oil in intake before catch can
install. As well as a rough idle.

Parts I've replaced, coils, plugs, wires, maf, ssv
solenoid, air filter, added a catch can on vacuum
line between oil fill and intake. I'm going to upload
datastream captures in the picture. Maybe you'll
see something I'm not.

4 Answers


How many miles are on the motor because Mazda recommends engine replacement at 60,000. Not injectors. Need to do a compression test. You can do it with a regular compression tester. You will have to Google it or You tube it on how to do it with a regular gauge

1 people found this helpful.

The problem is compression


Also getting codes for P2259 for secondary air pump, and P0610 for PCM configuration. If the engine is flooding my compression will show lower than if it wasn't. So I may have to turn the engine over w/o plugs to evaquate the fuel from the rotor housings, before a compression test. Motor has just over 40k miles. If the compassion shows good I may pull the UIM to test injectors for a leak down test. Been avoiding the compression test kinda don't wanna spend a bunch of money on a rebuild.


Secondary air injection is vital for that car to crank properly. P0610 could be contributed from the secondary. Lots of problems with corrosion and poor ground connections on body and transmission. Poor connections on computer and all other modules. Also pull air filter housing completely out and there is your electronic steer connection. Battery is right beside.

1 people found this helpful.

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