kanie12

Does anyone have pics of how and where the coils are located ?

expo1

The Coils are at the other end of the plug wires PHOTO The basic way you would know if they were bad is poor performance or they look damaged.

kanie12

I think i'll give it a try. What kind of poor performance do you mean? Bad acceleration? thx

TeamRX8

iTrader: (25)

it will go a lot easier if you pull the intake box out

Brettus

iTrader: (2)

and the accordian tube ....

expo1

This thread has posts on your question. https://www.rx8club.com/series-i-aftermarket-performance-modifications-23/smooth-butter-new-ignition-coils-twin-power-112662/

carbonRX8

iTrader: (1)

I dont agree completely that a performance difference is so completely obvious. I had two bad coils (one for each rotor) and didn't notice any major loss of power. I only noticed a slightly rough idle and black plugs. I checked the coils with a multimeter to see that they were bad. No burn spots on mine, contrary to what has been reported.

Note, TeamRX8 has a post noting an error in a early PDF version of the rx8 service manual.

carbonRX8

iTrader: (1)

Is it possible to pull the coils with the intake box inplace? From what I remember, pulling it would be a requirement.

Or is this classic Team understatement?

Brettus

iTrader: (2)

done right -it takes 2 mins to get the box off - no brainer .....

chickenwafer

iTrader: (9)

you CAN do it without pulling the intake but it is a lot easier if you do so.

MazdaManiac

iTrader: (3)

You don't need to pull the airbox, just the accordion. Take out the strut bar first.

TeamRX8

iTrader: (25)

for some reason I have a hard time pulling that with the airbox in and I have it down to where it's so easy to pop the box out without even unhooking the MAF wiring that for me it's a no-brainer

SOVINE

I just did a search for "bad coils" and found this....



My car wont start... again...

The first time it was because it flooded, they gave me the upgraded starter and 2 new spark plugs....


Now it wont start again... and I when I take out a plug and hold it close I get no blue arc so I am thinking the coils are bad???


I have no idea.

Jedi54

iTrader: (7)

Never fear, Jedi is here! I did this 2 weeks ago and have been meaning to post pics:

Take out the accordian:





Now you've got a clear sight of the coil packs. Get a ratchet, 12 inch extension, and a 14 mm socket and go at it.


Here's a pic of the new coil packs with new RB wires.

Nemesis8

iTrader: (3)

Where is the single ground wire located? I'm doing mine next week.

MazdaManiac

iTrader: (3)

There is no "single" ground wire.
Each coil has a separate ground wire that travels through the harness, goes by the PCM and is hooked to one of the chassis ground blocks.

Brettus

iTrader: (2)

Are they the stock Mazda coils or aftermarket ? Where did you get them & how much

Nemesis8

iTrader: (3)

Got it - thanks

swoope

iTrader: (5)

they are stock with a new part no.. the best price is onlinemazdaparts.com a forum vendor...

27 something bucks a piece... if they give you a crazy shipping price pm me and i will see what i can do...

btw, denver is looking pretty good.. search for red rocks.

beers

Brettus

iTrader: (2)

cheers swoope

looking into those plasma coils too

swoope

iTrader: (5)

pm

beers

dannobre

iTrader: (3)

Kev.....the ground for the coils ties into the bracket at the top of the rear of the engine behind the oil filter area......

MazdaManiac

iTrader: (3)

Actually, the coil ground is under the intake manifold, just behind the alternator (straight down under the oil filler cap). Its a 12mm bolt (with yellow paint on my car) and holds two wires directly to the engine block.
It is labled "19" in this drawing.
Power to the coils comes from a "condenser" which is, essentially, a capacitor.

dannobre

iTrader: (3)

I have dissected and redone the ground for the harness...the harness grounds attach behind the condenser.....onto the plate at the rear top of the engine....

MazdaManiac

iTrader: (3)

Here is ground position "19" where the coils are actually connected: