i put new plugs and wires in 2 days ago annd today i put in new coils.
car runns, idles, annd sounnds fine. my cel is on because i have a midpipe.
my issue is that after the new coils at hhigh rpmms ad wot the cel flashhes.

anyideas whats wronng? please hhelp

thhaks jesse

 

flashing CEL usually signals a misfire.

double check your spark plug wires to make sure they are on properly. Did you hear / feel them 'click' when you secured them to the plugs?
are you sure they're on properly? I know this sounds basic but I've seen people hook them up incorrectly and it can cause misfires.

what type of plugs?
what type of coils?

 

i did them one at a time, all conectios clicked on. ngk 7&9s rb wires and replacmennt coils

 

Start eliminating new parts one at a time until you can't recreate the issue anymore.

 

only thing to change is to put my old coils back in. its not running weird, but the flashing cel is bothersome. im used to the solid one

 

Don't have your old plugs or wires?

 

yhea but i changed them 2 days ago, no problems. changed coils today and i get a flashing cel at wot, in high rpms. changed coils one at a time no way to mix them up. im pretty mechinacal. cel is always on from midpipe but the flashing worries me. car runs fine tho.

 

Your burning off the ecess fuel and carbon.

Teh carbon is causing a misfire.

It should go away after awhile.

Make sure you redline it once a day.

 

will this hurt anything? i dont want to mess up my baby.

 

btw i always redline it at least once a day, just not when my cel is flashing.

 

Seafoam time?

 

i didnt get the flashing cel until new coils.? whats up should i put the old ones back in? i dont want the mess anything up. will this cause major problems? it seems to be running fine.

 

Check the connections to the could.
Fastened properly? Correct order?

Always rule out the little things first

 

double checked connections and i did coils one at a time so i couldnt mess up the order

 

Could be possible that everything is fine...could be that the new coils don't operate as effectively in that RPM range. A misfire can be bad and cause you to bust a seal and kill the engine so I wouldn't just keep having misfires. If Razz is right though...Seafoam will help.

 

what excess fuel? Where is this supposed fuel coming from?
carbon causing a misfire?

 

The car runs pig rich! that's the excess fuel.

Carbon comes naturally from any engine.

More so in the RX8 because the excess fuel builds up carbon deposits.

The car starts burning hotter due to new coils and plugs it burns up that excess crap and can cause a misfire.

Plus since it is running hotter it can break up small particles of carbon that can cause a misfire as it runs around the chamber interfering in combustion until it is blown out.

Sea foam is good.

When you comming over to sea foam my car Master Jedi?

 

Your logic fails.

1) Fuel is fuel...it is burned during combustion...and while the system might run with too much...it can't lead to a misfire...just a backfire.
2) Carbon comes naturally yes...it is an element :P
3) Fuel becomes carbon, among other things, and while you might have excess carbon from excess fuel...it doesn't lead to carbon deposits. Carbon deposits occur anyway.
4) It is impossible for our car to burn carbon. Carbon burns at 700C and when you are talking about the quantity that our car has in the engine, it will be much higher then that.
5) Excess carbon on the rotor can lead to a misfire however as it will store enough heat eventually to ignite fuel.

 

so coils i got from a member here matched oem # but from a company called intermotor. they caused misfire on my mile test drv, and again after rechecking them. put old coils back in annd problems went away, so guys stay away from thhese coils.

 

do u guys think coils from autozone come out good

 

someone posted that orillys sells them with lifetime guarantee, i think. if you can get the bhr kit if not i would say mazda oem

 

I just put the O'Reillys coils in my daughters 04'. They where just under $40@ and they do come with a lifetime warranty. They where made in Japan and had the same part number on them as the original ones put must be an up-grade the last suffix was an "B" where as the original ones ended in"A".

Took less than 15 min's to put them on and no problem. Chenged plugs and wire also. Ended up using a universal MSD V8 wire with straight boots no problem just changed them one at a time so could cut to lenght just a little longer because of the straight boots. They make a plug boot with a 90deg. end but either one will work fine.

Good Luck wro87

 

*** i just bough some new coils and they are intermotor brand are they gonna come out defective then

 

Sometimes you can crack a new spark plug for many many different reasons. Pull each plug and inspect it. Just because its a new part doesn't mean you can't get a faulty part. As you check each plug reconnect the wire and torque them properly. Do this for each and every plug and wire. Including the end of the wire connected to the coil.

 

Are we sure the spark plug wires are being put on tight? No offense but you need to make sure it goes into the knuckle properly or it will either tick or not fire.