misfire...after coils and plugs changed.
 

Changed plugs and coils Thursday last week, car ran loads better, got home last night reved her up and cel flashed and then went solid...wtf is going on. Flamers go ahead, right now I just don't care, just hope someone will take pitty on me and help.

Thanks.

Did you double check all of the connections?

Re torque the plugs?

MAke SURE your plugs aint too loose or too tight.

usually I do it like this, hand torque it all the way to the end, then get the Plug socket out and give it an extra 1/2 circle turn.

my plugs work for 10K miles already :)

Lets not forget, You might want to reset the ECU, especially after those stuff has been changed.

and, misfire happens. rapid acceleration and deceleration might trigger it too.

That's what I thought so I did that last night, seems to run fine though other than a little and mean a little sputtering above 7000 rpm.

if its really minor then u' should be fine.

but if you can feel that it *chokes*, something is not moving smoothly. at least now my engine never choke, all the way to 9 K baby !

What you can do is throw a bottle of GOOD complete fuel system cleaner like redline into your tank. And run your car HARD, rapid accelerate and decelerate around the rpm range.

it helped me, so it might help you. :)

Be absolutely certain that none of the plug wires are touching each other (not to mention that they are attached to the correct plugs).

Should also change out the plug cables. Stock cables are notorious for becoming electrically porus over time, causing crossfire/misfire. The new coils and plugs are only as good as the electrical conveyance between them.

Make sure that the connectors are fully seated on the plugs.

A full connection is one where the plug boot completely covers all of the ribs on the side of the plug.

I will try these things and let you know what I find. Thank you.

I'm leaning towards the cables not being attached properly OR possibly being hooked in wrong. (simple error, could happen to anyone)

I know when I installed my Racing beat wires, those S.O.B's were pretty tough to get properly attached.
Good luck, hope it ends up being something simple

Yep, try the simple first. But, if you went the expense of new coils and plugs, you should also go new cables.

^^agreed I'm :banghead: for not doing them, ordering new wires today.

took car to bountiful mazda here and they say bad coils...bulshit and low compression on both housing. NO WARRANTY due to intake/exhaust. calling MNAO to find out what to do, any tips?

They have to prove the mods voided the warranty - not the other way around; might want to remind them of that...

I told then to provide it in writing how my intake and exhaust blew the compression on my engine, and he said they don't have to, it's up to me to prove my parts didn't do it. So when I get my car back today I am gonna shove the Magnuson Moss Act up his ass.

Keep us updated.

lol

We have to prove it? shove that Magnuson Moss act up to his ass !

Seriously speaking, intakes I understand, but CAT back !?!? Come the hell on. Why dont they blame the roads ? blame the weather ? hell blame god for giving humans so many problems !

Its just sad that they keep paying minimum wage, all they can hire are ppl cant even finish their Junior high school.

Im with u bose, if u're in nyc or anywhere near, I will even go with you just to piss them off. jeeze

Great...bountiful mazda is my dealer too...makes me real confident....

Good luck with that! I hope they do you right on this!

Get this, so I picked up my car and the service manager said, "As far as what caused the problem, who knows but the fact that you have modded the car means you accept libility for anything that happens, it's in your warranty book." the warranty book says nothing NOTHING about aftermarket parts voiding the warranty. It only says somthing to the effect of, you may find parts that will fit your vehicle Mazda does not approved these parts and they will not be covered. the fine print disclaimer say the do not accept liability for any injury death or expenses that result from the installation of these parts. That right there says it has to proven that my parts caused the problem, but if they wanna play games I'm calling AEM and greddy today to see if I can get a letter from them stating thier parts do not adversly affect my engine. I wonder what they will say if I can prove my parts didn't do it.

I think you are doing it all wrong - just get a copy of the Mag Act; and tell the service manager who is not sure what is wrong - that his "unsureness" just got you a new engine.

hey, have you done a compression check (for real)? what are the numbers?

I know you say the dealer said you had no compression but that could be BS.

I wouldn't say your engine is dead until you have at least that much info in hand.

Have you confirmed X-times that you did re-wire the coils and plugs correctly? (coil side harnesses and plug wires)

The numbers are definatly low I had another dealer verify the compression, both rotors, numbers were almost identical, 6.3, 6.4, 6.7. somthing like that I don't have the paper in front of me.

Kane your right I fell like I have. Today I'm going back to the dealership to speak with the owner/gm, with a copy of the act, and just state 'hey, these are my rights you have to do this or we go to court. plain and simple.'

Sounds good - be nice; since no one likes a jackass; but the rules are pretty clear cut.

Hey Bose did your car make a deep tone and then stall or did the cel light just flash, stay on and your car still ran? I think I have the same problem, I also pulled the codes I had 2 running too lean codes and misfire on cylinder 2. I am still tryin to figure out what is wrg with mine....good luck buddy

I agree the law is pretty clear where reponsibility lies.

But to answer your question. I have exhaust so it's always deep, but it wasn't any deeper than normal, she's never stalled, I was parked rev'ed it up and the light flashed 8-10 times then solid, she has run the same since I got her before the cel and after the cel came along, it feels the same. All I can say if I learned anything from this is if your taking it to the dealer, unless you have a mod friendly service manager, you need to put the stock parts in, it's not worth the hassle of being denied.

Yea this weekend I am putting on all the stock parts, I think my engine is done too. I am running a compression test this weekend. I have a lot of stuff done to the car so I have my work cut out for me. Yea I have no cat and a Greddy exhaust so mine is deep too, you would notice this sound, mine happen on the highway when I downshifted and my car jus said F-you and then died.....well keep us posted man I have already been in fights with the dealership so I feel your pain....good luck bro.

I hate when dealerships are stupid ass-clowns about replacing things with aftermarket parts on it. Why a dealership would want to pass up a chance to make easy money is beyond me. Maybe they are hoping you will pay out of pocket so they get time and a half for labor? So much easier and less of a headache for them to just replace the engine under warranty than fight the consumer and try to rip them off for a few more bucks. Some dealerships are real dumb asses and then they wonder why their CSI's come back so f'ing shitty every quarter.

well I may be completely screwed, after talking to the district manager and Mazda technical hot line BOTH have denied warranty citing my aftermarket parts 'may have cause the problem' I'm told they are the only two that has actual say on the coverage once they have spoken that's it. I asked them to write a letter as to why they are dening warranty, they haven't faxed it yet. What do I do now? Get a lawyer to contact them, bite the bullet and get it fixed, basically am I really screwed or is there another route I can take to get this resolved.

I would go higher up and also find a lawyer that deals with auto lemon law bs.

Well spoke to the owner of the dealership, he said the reason they denied warranty is due to a clogged cat, took it to Master Muffler to have it verified to see if they are full of it or not. Well they are full of it, nothing wrong with the exhaust or the cat, they said I have to prove it wasn't my parts here they go. They can't say anything about the intake or they would be saying the Mazdaspeed intake is bad for the car. I think I have them by the balls now.

Go get 'em tiger!

I don't know about the lemon law in your neck of the woods but in RI.. The dealer has to prove that it was the part that caused the malfunction... Not you!!

btw: why this is critical to resolve:

"Wankel engines are very sensitive to misfires since the engine will lose momentum from the lost stroke and get slammed back into movement from the next chamber firing. Care of the ignition system is of utmost importance to avoid the problem."

lemon laws only apply to new cars though.

You got them already.

Its easy just tell them that Mazdaspeed intake is the Rebadged version of AEM. in the other words, Mazda PAID AEM to sell them their intake, but instead of AEM's names they put Mazdaspeed on it.

And why would they give people shit about AEM and not Mazdaspeed. if this thing goes up to court they will lose for sure.

About the Exhaust part, clogged? isnt it super easy to tell if its clogged? EVEN its clogged, what kind of bullshit is a *more free flowing exhuast* will cause a cat to fail faster than a more restricted one ?

Seriously Mazda should stop hiring people who cant even finish high school.

^^^Agreed, even if the cat had clogged it would be cause the engine is messed up, supercats don't just crumble and turn into a cork. they are screwed they shot themselves in the foot now I can't wait to get this over with.

BTW is that a double big mac? I have been meaning to ask.

dealerships love to put BS on customers, well, *Typical* customers that is. They always have a big ass sign put up around the service department stating some *diamond packages* including *10% discount on parts value up to 700*, I was like LOL !!!!

but most of us are not the dumbasses that they're looking for, too bad, they can save their bs for someone else.

Just wait, they will fix urs.

P.S. : Nope, thats not double big mac, is called MegaMac, a *Japan only* product. I tried one when I was in Tokyo couple months ago. At first I was like hmm lets check out and see what kind of crap they sell in McDonaldos in Japan, then I saw this *MegaMac* thing I was like wtf? so I got one. Shit is huge ! shared it with my gf. Oh, they also have McPork too LOL !

That is good to hear bose that you got them screwed. I love how both the DSM and the shop manager claim they are the final decision. If they try and dick and tom you take it MNAO and start a shit storm. I am real good at doing that, IMO I don't think you will need a lawyer to win this one.



That shit looks bad ass even though I more of a Wendy's person then a McDonalds person.

wow, i'm having this problem too.

I didn't want to make a thread of it after seeing this one so hopefully if by describing everything going on, maybe i'll still get feedback (sorry OP)

'bout two weeks ago i couldn't pull after 4-4.5k without it hesitating like crazy (i replaced coils about a month before this).

I put in new plugs about 5 hours ago, did some pulls and it's not AS bad, but at 4.5-5k is does a hard misfire/jerk/hesitation...sluggish acceleration up to 7, then from 7 i get power like crazy, then another hard misfire/jerk/hesitation at 8k.

the plugs were replaced back in the summer because they kept popping off. maybe i crossed one of the plug wires when doing the coils? I would think it would have been obvious then, unless not? just in case, when looking at all four coil packs, in order from left to right, which is which? LTLT or TLTL

also, i have a hi-flow cat from SR Motorsports, i have about 15k miles on it. I remember reading in another thread that a lot of earlier produced hi-flo cats were going out after so long as well. thoughts? i still have the oem, i wanna just go ahead and get the SRs cut and made into test pipe.

any info will be great. i'll be reseting the ecu soon as well.

I like wendy's stuff more too. Hardly have Mcdonalds. but u know when u are so far away you might want try their *local* version of something u know. :)

The order should be LTLT.

but u better make sure you plug the plug wire to the right spark plugs too.

Put it back to stock and bring it in

What I do is replace one plug at a time; therefore it's impossible to get it mixed up as there's only one place for the plug/wire to go. Also, if you're doing the work yourself, did you use dielectric grease?

cody,

pull the cat and look in it.. if it is bad it is obvious..


beers :beer:

well that's the thing, there's actually a long story about that (swoope knows). i'll have to see what I can do about doing that though...geez, "compression tests are like age tests" my friend tells me, "you'll always be worried about the results."

something like that. i'll pull the cat asap, weather sucks hard though.

i will be in town next weekend .. i might have fri afternoon to myself.. let me know if you find anything out.

if not i might pull the scanaylzer cables out of my car and see what we can find..

beers :beer:

lmk, my brother will be down that weekend so it will be tough to find some time. you have my number or pm me.

any other suggestions? idk if there'd be any, but it doesn't hurt to ask.

are they the new updated coils you put in????

any cel at all, flashing or otherwise?

beers :beer:

And the CAT back exhaust is just a muffler. State and Federal law allows you to choose any manufacturere for a muffler.

You have to fight for your rights.

I know, thats why I said (for example) its bullshit for dealerships to give people crap about AEM intake while Mazdaspeed is the *rebadged version* of the AEM.

Exhaust ... lol its after the cat, and more free flowing, how the FUXK a more free flowing exhaust can fudge a CAT up even faster than the Stock, more restricted one.

Dealerships .... sux these days ...

Dealerships like to bullshit you out of your money. They finished highschool, and they know they get more $$$ if they bullshit their way into your wallet.

Seriously. I got charged for a powersteering fluid change when there isn't fucking powersteering fluid to change. I told them to save their BS for someone else, and now I am adamant about never going to dealerships for maintenance.

^ you should have copied your reciept and sent it to Mazda Headquarters.