If you're not losing coolant, then most likely not, unless there's an air bubble in the system that hasn't burped out yet to lower the coolant level.

Remember that compression is lost in 4 different directions in a rotor housing:

past weak apex seals into the next combustion chamber
past weak side seals across all combustion chambers
past weak/damaged coolant seals into the cooling system
through damage to the rotor housing, like around the spark plug hole to the atmosphere

A misfire can be caused by any of those, or through a weak ignition system that doesn't properly ignite the fuel mixture, or an overly rich mixture that won't burn, or an overly lean mixture that won't burn.

What any of this has to do with the original thread, I'm not quite sure.

BC.

 

hi just been given this really useful link and after reading some of the problems I have just tested my battery and it says its 12 volts, is this ok as it says above it should be 14? If I get a bigger battery will it run and start better?

Thanks

Sophie

 

12 volts is ok with engine off - when engine is running it should read 14volts once engine has warmed up .

 

ok thanks will try when running tomorrow as its 2am here and my neighbors wont be very happy!!

thanks

Sophie

 

So after replacing fuel pump, starter, plugs the only thing left to do is get a compression test before I spend money on anything else. What are my choices in case I need a new engine? I don't have a warranty since my car is "technically" a rebuilt title so getting a new free engine from Mazda is highly unlikely to happen. Can the engine be rebuilt using upgraded components? And can this be done by any non rotary specialized mechanic?

 

ok so what if my car wont click over,, my security key flashes I had my battery off for about a week since I was purchasing a red top when I went to start it no click no radio no a/c function lights are ok, i checked fuse but double checking them tomo, My car dont make no starter noise or no click at all battery is charged up im hoping is a fuse,

 

Thanks for all the great advice.. i will probably make a new thread though.

 

With the purpose being?....

 

I am a little late but also want to add that a dirty crank sensor can cause slower than normal starts.

 

MY starting experiences..

 

If the key is the problem, your radio and and cabin fans should work even when the security lights are flashing in the acc or on position. Must be a fuse.

Also known as "Eccentric Shaft Position Plate"*(ESS).

 

ok im having problems with my Rx8 i bought it this month, it has 81K miles and its a 2004. Everything else is fine but it takes a while to turn on i took it to the dealership that i bought it from(a nissian) and they THINK its the fuel pump so im trying to see what it is. i dont want to take it in and then mazda charges me for just looking at it. so what do you think the problem is???

 

Ask for a compression check before you spend money on anything else.

 

Wouldn't it be great if there was a thread with all sorts of information in it.
You know, something that puts together a whole bunch of information about common problems with used RX-8's, or tips for a new owner to look at when they are thinking about, or just recently bought a used RX-8, but they are having a bit of difficulty with their recent purchase?

Or maybe, even a thread about how to diagnose common starting issues?
Wouldn't it be great if that thread even had videos in it with examples of an RX-8 with differences in the ignition and starting system, and the video showing the changes that all of those made to how easily (or not) the engine starts after the repair?

Yeah, wouldn't a couple of threads like that be something a new owner could really find useful?

Too bad those don't exist.

BC.

 

I agree with you there BC. Someone should really put something like that together so it would make it easier to find information on specific issues.
At least we do have threads like this one that don't actually have any useful information in them but you can go in and post about your problems and maybe find someone who has a clue.

 

I think Bladecutter was being sarcastic, since one of the threads he referenced is this one.

 

as was I, derp.

 

very nice thread.

 

BUMP for the COLD WEATHER HARD-STARTS!!!

 

Very helpful thread, thank you.

 

Very good thread.. Having missfire problems myself, Only at start up, the car sounds like is bugged out, rpm's go up and down, shaky, engine light flashes! I changed coils and plugs about 4 month ago, it stopped doing that for a while, now is back at it again. Once it warms up, runs perfect.

 

Hello please I REALLY NEED HELP.... i have an rx8 126k original motor (engine), when i start my car theirs no lights on... exept for battery. and engine check.. other than that when I start my car it takes 4-5 seconds when i twist to the ignition.. like if its having trouble starting??? my second question is when i drive the car for atleast 10 mins... i come to a complete stop , or red light, my rpm slowly goes down from 1rpm too 0... and shuts off automactly .. like if the engine is weak or something is clauged... if i dont keep my pedal on teh gas... to redv it atleast above 1rpm.. it will shut off.. and im tired of keeping it liek that.. does anyone know this problem???

 

SEARCH! Your answer is all over the site

 

Flashing CEL is always a misfire - Please see the thread in my signature regarding misfires to begin determining the cause of your problems. Getting the code read would be a good place to start. Also, did you replace the coils and plugs/wires at the same time? You must always do them all at the same time.

One thing to consider is getting the BHR Ignition kit, best upgrade I have done by far. Please move convo to misfire thread if you haven't yet

 

Have you checked what CEL (engine light) is up? Get that code read to start with, diagnostics go from there


@Cliffjumper126 - I (along with many others) have no issues helping people with their problems, as I have been helped in the past. Pointing people in the right direction is great as well, but doing so in a constructive and appropriate/helpful/kind way is the way to do it