futbolplaya10

For a couple of months now my 8 has been giving me a rough start. It has 75k miles on it and this is the first time that its giving such a problem every time i start the car it takes a while at least 6 seconds to start about 4-6 cranks. Does anyone know what might be the cause for this problem. The car has givin me a couple of flooding incidents but thats about it. Also i feel that at the lower rpms the car seems with less power it takes a while to speed up until it gets to 5k and on then the power really kicks in. I am quite sure that there wasnt such a drastic change in power before while going through the rpms
If anyone has any ideas to why this is happening it would be great and perhaps a suggestion whether to take it to the dealer(with warranty expired) or to another auto mechanic.

Startl_Respons

Coils number 1. Spark plugs number 2.

futbolplaya10

im not too familiar with all the parts what are the coils

Old Rotor

Could be low compression. Give us more history of service you have had and the type of driving it gets.

Huey52

iTrader: (2)

Ignition coils. They are essentially the transformers that boost the battery's 12 VDC to a much higher voltage level to facilitate the proper spark .

Startl_Respons

The coils receive electrical current from the battery. One end of the spark plug wires connects to the coils and the other end connects to the ends of the spark plugs. You are out of warranty so you will have to pay for coils and spark plug wires. Not sure how much spark plug wires cost, you might be able to reuse yours or even buy much better ones than OEM. I believe at this time there are not any/many aftermarket coils for our car and it might be best to just stay with the shitty OEM ones, which should be about $30 or slightly less for each (there are 4 altogether).

DarkBrew

We don't know the car's history or maintenance record. Has your car been in for the recall (engine check)? Please describe your driving style. Any CEL?

futbolplaya10

my car has gone for the engine recall check no new engine needed they did change two spar plugs. This was done at about 58k. I have only had the check engine light come on once for just a short amount of time while i was driving on the freeway but i have never seen it agian(kind of strange when i saw it). As far as my driving styles i am 18 so it does get a bit of aggressive driving but most of the time just normal driving i would say. I would say that the starting issue came at about 68-70k and i did take the car to a mechanich to see what they could do but he said that he tried to see what was wrong but i dont think he did anything(not mazda specialist, just local mechanich)
Is it a problem that i might have done

Startl_Respons

I will bet it is the coils.

futbolplaya10

Is it easy to swap these coils or do i need to take it to the dealer and if i could do it myself where could they be purchased

Startl_Respons

Buy at the dealership for no more than $30 each before tax. There are 4 of them. Go to the Rosenthal Mazda website and print out their price list to show your dealership. But negotiate price on the phone first. Although I did not install myself, my understanding is they are not that hard to do yourself. Read the DIY thread.

DarkBrew

Get coils, all four plugs and plug wires. I'd bet that your random CEL was from misfires.

Here's a picture I took while my coils were replaced.
https://www.rx8club.com/showpost.php...48&postcount=1
The coils can be seen below the throttle body.
The intake bellows and air box were removed to provide some room.

futbolplaya10

where can i buy these at?

DarkBrew

Coils and plugs at http://www.finishlineperformance.com...intenance.html
Plugs at http://www.sparkplugs.com/results_ap...1&AAIA=1416844
Plug wires at http://www.racingbeat.com/FRmazda4.htm or http://www.mazsport.net/store/index....oduct_list&c=9

futbolplaya10

any recomendations as to which ones i should get, i mean does it make a difference as far as performance.

nycgps

iTrader: (1)

It does NOT make a different in terms of performance if thats really what you're asking.

but most likely it will *restore* your car to what it was before the problem happens. Most likely back to the *original* state. meaning more power than what you have now.

Let me give you a little bit of information :

When they did your recall, they say ok but maybe its not ok, cuz most dealerships are fuxking lazy to actually test them, so, lets JUST ASSUME that its really ok, then they will go ahead and Update your car's ECU (Engine control unit) to the most recent version to prevent the problem, then they will check and see if you had Engine No start case Open(dont worry about it), if it is open, they will go ahead and replace both LEADING plugs of the engine.

We dont know your car's complete history but I assume that you've NEVER change your spark plugs before, other than the time that the dealership did the recall. If thats REALLY the case, Im VERY shock that your plugs actually last until 58K miles.

This engine has 4 spark plugs, 2 Leading, 2 Trailing. and for the recall they will only change the leading ones. which means your Trailing plugs are WAY OVER DUE. and Leading plugs should be change too. Cuz 58 Miles now 75K miles thats already like almost 30 K miles. Its about time.

So what you need to do now, is

- Buy a set of Spark plugs, if you want to save money, follow this, buy 2 leading plugs from one of the ebay sellers, they're selling Leading plugs for about 10 dollars each, Buy 2 of the SAME heat range. Then go to maybe sparkplugs.com and buy 2 Trailing plugs. About 20 dollars each plugs shipping, so total about 50 bux. thats about less than 70 bux.
- Buy a set of new Spark plug wires, you can get them from one of our forum vendors, About 60 bux or less.
- Buy 4 factory ignition coils - they're about 28 each, also from one of our forum vendors.

- Buy some basic hand tools, you'll need spark plug sockets, some wrenches, anti-seize paste, a Jack stand, a Low profile jack (Stock scissor jack can do it too, but its mad slow), and some time.

If you want more info give me a PM and let me know, it sounds kinda complicated , but its not, and when you're done, that feeling is just ... priceless.

DarkBrew

Especially when the car runs great!

Huey52

iTrader: (2)

btw: Historically Japanese stock sparkplug cables have been of relatively low quality. They become electrically porous more rapidly than higher quality cables, leading to crossfire.

Hmmm... if crossfire is such a bad thing, why would anyone name a car Crossfire???

Startl_Respons

You mean leading to Chrysler Crossfire. Perhaps Chrysler named it that to suggest that it is a car that will **** itself up real bad.

max5roadster

Or the Chevy Crossfire V8 in the vettes?

AndyRx8's

One thing I have found that putting a bit of outboard engine two stoke oil in the feul definately helps the engine to start easier. helps with compression. Ratio 100 to 1 mix.

Huey52

iTrader: (2)

That's what we call pre-mix. Many threads on that subject.

Marine two-stroke oil can be detrimental however. I rather use Idemitsu, especially formulated for rotary engines.

"Idemitsu Rotary Engine Oil is the only oil specifically designed to be used in the rotary engine. As the developer of the engine oil for the winning 1991 LeMans Mazda 787B and a long time supplier of vital lubricants to Mazda, Idemitsu has intimate knowledge of the requirements of rotary engines."