Hi my 2004 mazda rx8 starts really well when engine is cold but has problem starting when the engine is hot . It will start after several goes . Quetion is does any one know whats wrong please help

Asked by Aug 31, 2014 at 06:00 PM about the 2004 Mazda RX-8 6-speed

Question type: Maintenance & Repair

My beloved 2004rx8 wont start when the engine is hot , will start after resting for 10-
15min or after several goes trying to start it . First thing in the morning its fine  go for a
slow short drive stop restart fine, go for a fast drive stop engine  try restart doesn't start
straight away . Had new sparks coils , leeds

4 Answers

67,495

May need to check the coil,if it is not a firing problem,may need to check fuel pressure to rule out fuel pump.

2 of 2 people found this helpful.
105

Apex seals,every 30k like clock work on these Rotary engines.

2 of 2 people found this helpful.

My advice would be to drive it like you stole it. Rotary's need some rapping to keep them clean of carbon. Also use some royal purple injector atomizer or lucas fuel system cleaner. The reason I say this, other then a lot of research, is that My 2005 RX8 would take up to ten tries to star, hot or cold, after I baught it used. From the start I got the RPM's close to red line at least once a day and drove it as hard as the law would allow. About a month ago I was making a short trip with the car warmed up and it started running with slightly less power, then when I arrived at my destenation it tries to die on me. I shut it off thinking oh crap the feared rotory death has come. But when I restarted it it ran fine, maybe better then before. Every since then it has started every time the first time. My only idea about what happened is that it had some stubborn carbon bould-up and it suddenly came loose. Morale of the story, use those high RPM's as often as you safely can, and keep everything clean.

Starter

Your Answer

RX-8

Looking for a Used RX-8 in your area?

CarGurus has 356 nationwide RX-8 listings starting at $1,499.

ZIP:

Mazda RX-8 Experts

  • #1
    tennisshoes
    Reputation
    210
  • #2
    Paul Wilson
    Reputation
    180
  • #3
    Michael Kane
    Reputation
    150
View All

Related Models For Sale

Used Nissan 350Z
68 Great Deals out of 1,217 listings starting at $3,917
Used Ford Mustang
752 Great Deals out of 42,817 listings starting at $1,300
Used Mazda MX-5 Miata
70 Great Deals out of 4,223 listings starting at $2,000
Used BMW 3 Series
1,041 Great Deals out of 31,744 listings starting at $1,000
Used Mitsubishi Lancer Evolution
21 Great Deals out of 518 listings starting at $13,995
Used Honda Civic
850 Great Deals out of 78,667 listings starting at $900
Used Mazda MAZDA3
367 Great Deals out of 27,229 listings starting at $950
Used Chevrolet Corvette
248 Great Deals out of 22,275 listings starting at $2,500
Used INFINITI G35
97 Great Deals out of 3,112 listings starting at $700
Used Mitsubishi Eclipse
25 Great Deals out of 1,278 listings starting at $1,250

Used Cars For Sale

2011 Mazda RX-8 For Sale
8 listings starting at $10,388
2010 Mazda RX-8 For Sale
12 listings starting at $6,777
2009 Mazda RX-8 For Sale
27 listings starting at $5,955
2008 Mazda RX-8 For Sale
19 listings starting at $4,995
2007 Mazda RX-8 For Sale
36 listings starting at $3,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.