hi everyone plz if you could help post your replies, i joined today and hav had my mazda rx8 for 4 days now only? it has done 48,000 miles and is spotless i dont see whats wrong with it. it wasnt running very nicely at first felt as if it was misfireing so i changed the spark plugs and ignition coils to brand new ones, and now it sometimes starts and sometimes doesnt???? plz helppp

 

What year, transmission. Look at the bottom of the page and search. Is it turning over and just not starting? Is it only when allready hot? Did you turn it off when it was cold? It could be flooded. We need more info.

 

hard to turn over might be a going engine.

 

Need more data before we can say anything at all.
See what Old Rotor asked....because he's old! Hell........I'm probably older!

 

baysicly its a 2003 model mazda rx8 192PS manual and it 90% of the time it starts up when i turn the key even with a cold start! but sometimes it doesnt??? is this normal?

btw i appriciate the time your giving to reply, thank youu

 

battery been replaced?
a video would help a lot

 

try and type in complete sentences, if anything it helps get your message across. proper spelling would help alot, not being a ****, but it will help when communicating problems to other people trying to understand and help.

1) check that your car has all the latest flashes from mazda (found under your hood in stickers)
2) check that you have proper fluid levels
3) please either describe in better detail, or even better, record and upload to youtube, we can help diagnose it
4) you are flooding your engine and ruining your spark plugs, be careful with these none starts. (one of mazda's flash has it set on 10 second max attempt to start it, so give it time)

http://www.youtube.com/watch?v=ExTPnbpLp3o

watch that video, it's what my car sounds like on a cold start, and is what your car SHOULD sound like.