Kemi Pillay

Hi guys, my first post as a member. I own a 2005 RX8 HI power- 45 000km on the clock. What a beautiful car. Of recent, I am having a problem starting the car. Have changed the plugs but problem still persists. Seems like no compression, when cranking, engine turns fast. There is no flooding. Please someone help me.

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alnielsen

Are there any error codes set in the ecu? Have you performed a compression check?

Kemi Pillay

Hi thank you so much. There are no error codes on the ecu. Hey have been told by the mechanic that a compression test cannot be done on the MAZDA RX8. Please tell me, how can the compression test be done.
Thanks a million
Kemi

bse50

Rotary compression tests require a dedicated tester.
If your mechanic doesn't have one, find one who does, are there any mazda dealers close to where you live?
As a last resource you could use a standard compression tester with the purge valve open:
crank the car for a set amount of seconds (5-10, whatever) while counting the revs somehow (obd gauge, hear, whatever). You must know at what rpms the test was performed
read the spikes on the tester's gauge.
Pick 3 consecutive spikes and compare them to the specs present on the workshop manual. Adjust to the reported rpms and.. job done.

Of course this is a highly imprecise method but as a last resource could still be worth something.

You could also use other empirical methods, like heavy premix etc but they're still a shot in the dark at times.

Is your fuel filter dirty? Is your maf clean? is your catalytic converter clogged? These factors could very well be con-causes to your hot starting problem.

Sergio80

Hi,
I've bought a couple of months ago a RX-8 04 190. I probably flooded because I didn't know the story of flooding. I moved the car in the garage and I turned it off.
After 20 days I tryed again to turn on and it didn't work.
Than I wait Christmas and I departed home for 3 weeks.
After nearly 2 months there is need to change the battery as well? I bought it second hand. The battery seems new BOSH HSB010. Should I change it anyway? If yes, which models are suitables?
Anyway yesterday I friend helped me with the cables and it didn't work. I didn't insist much because when I push the accellerator, I smoke stated to come from the engine and I thoght that something was wrong.
Could you please help me? Give some tips-advice?
Many thanks
Sergio

Kemi Pillay

HI Sergio

Thank you so much, we will be trying those suggestions. How does one check the fuel filter. I have also told that the problem could be with the engine, is that possible the car was bought new and I was the first owener and the mileage is 45000KM.

Regards
Kemi

ZoomieZoom

You changed the pugs what about your ignition coils. Its one of 4 things generally airflow (MAF), igntion (coils,plugs,wires), Exhaust (Cat clogged), or last but not least compression (Engine seals). If you have maintained your maintenance amd taken care of her properly its probably not going to be an engine compression issue. Also do you have the old weak starter or the upgraded faster starter?? I would start with compression test as that is the cheapest to get checked and then you can go from your process of elimination from there. Oh and i forgot Fuel (fuel filter, pump) DUHHHHHH that makes 5 lol

ZoomieZoom

Sergio search the threads about flooding this has been covered multiple times. The rotary is not like a piston engine you cant wait the flood out. the piston engine the fuel has somewhere to drain. Unlike the rotary where it just sets and then 20 days later you try to strart again and just add more fuel only exacerbating the problem even more. Read and learn. Good Luck!!! oh and if all else fails you could take it to the stealership and have them fix it for you.