Kaysiem69

Hello I am new to rotary engines and I have a 05 Rx8 that has little to no compression in the back two spark plug holes the leading and trending ones. Is there a way to help get it back with a rebuild? It's has 163000 on it. I was just driving it a couple days ago and it died after flooding it to pass someone. The front two plugs was dry but back two was wet with fuel when I took them out. Any idea on what it could be.

Left4Dead

Did you try the de flood procedure ? Usually used when you shut the car off quickly without letting it warm up but worth a shot.
Best way to figure out engine health is to have compression tested.

Kaysiem69

Yea been trying to de flood it since Monday, I am doing a compression test tomorrow but there is not air being forced out the leading hole I believe it is the seals since it has so many miles and I have no idea what the previous own did with it. They didn't give much info on it when I got it.

Left4Dead

Does it still have a cat ? Does it turn over now ? Does it have any check engine lights ?

Kaysiem69

The cat was gutted and put back on and yes it turns over and will back fire sometimes. It did have one the was the o2 and misfire on cylinder 2

Loki

iTrader: (1)

If you have both plugs removed just feeling for air coming in or out isn't really a test. At least test it with a piston compression tester, although a rotary one is better. And you need to close the one you're not connecting the testor to, otherwise the test makes no sense.

It sounds a lot like the ignition on the rear rotor is completely gone, so regardless of whether you replace the engine or not, it will need new coils. This is common.

As for whether you can rebuild it... I wouldn't, its not a simple as throwing some seals and gasket in. You need to know your big parts are still usable. Much better to buy a ready rebuilt engine made with known good parts.

Left4Dead

I would start with some mazda coilpacks dont know that you need to think about new engines just yet

Kaysiem69

yea looking for best ones I just put some Ena coils on in April but got misfire in cylinder 2 now and it's running super rough.