changed out my spark plugs with NGK iridium and my car wont run, lit bogges out when in give it gas. I put the old plugs back in, and has the same problem. my guess is its the coils, but how do u check the coils if there good or not. your help is very much appreciated.

 

make sure you plugged them in fully....and in the right order. and if you disconnected the throttle body connector you need to relearn IAVL.

 

Checked the coils and all sit in fine but the #6, it's pops out a little, but I push I down and put the screw to hold it. U think that's a problem. And would disconnecting the positive and negative on the battery and reconnecting would help? And how can I find out the correct order the plug suppose to go?

 

well the connectors are pretty much arranged in a way so you cant really get them in a wrong order, but ive seen people mix up the #4 and #6 connectors.

 

Yeah I checked the wiring an it was good. But I want to check the coil so since I don't know the correct way to do it, I pulled the coil out and attatched a spark plug and turned the car on and there is a spark but hard to see but u can here it ticking too, don't know if the low spark is normal, and it's the same on all coils.

 

did you gap your plugs correctly?

 

there the NGK iridium, was told they are pre gapped. i used the same plug on all coils and only one gave me a good spark. that sucks if u have to replace the rest....going from changing the plugs to a $400+ hit.

 

Is the MAF sensor fully plugged in?

Check and make sure ALL the seals are good on the intake tract.

 

MAF-Mass air flow sensor? I didn't unplug it. Where's it located?

 

On the airbox behind the air filter and before the intake tube.

 

I had to increase the gap on my spark plug when I installed them. They were too close. I used NGK iridium too. Check to make sure all your hoses and harnesses are connected correctly and do a reset on ECU, throttle, idle.

 

Get yourself the service manual. not that little **** in your glove box. it is available on the forum just search. check the order in which the coils are connected to the ignition harness. if you didnt take any recollection of the order of the wires while unplugging them this is most likely your issue. a car will not just stop working from changing the spark plugs. Human error sadly is your problem. go over all the work you did and triple check everything. You said you tested all the coils with one spark plug, and only got a good spark once correct? you need to trace the coil wires to their source and make sure nothing got tugged on by accident. if your number six coil is sticking up to high make sure the plug is seated all the way down and not cross threaded. we have an alluminum block so its easily stripped and ****ed when working with the plugs. i hope you didnt force anything while you were working.

pull the #6 plug again and if it seems like its a lot harder to move than the rest you may have funked yourself a little bit.

Good luck man

 

Anyone know how to check ignition coil with voltmeter, know how many volts in the wires?

 

U sure u didn't swap 4 and 6? They way they they have to stretch in opposite directions, if put the coil on that is closer to coil 6 then you think that's tight bit it's actually for cylinder number 4 and thus the #4 coil whoch is closer to it is for # 6. it's unlikely u have wrecked coils if they were perfect before. If all u unplugged was maf sensor then that's all I can see that's wrong with it

 

I tried swapping #4 & #6,still didn't work, and I didn't even have to unplug the MAF sensor......thinking of getting COP quick probe, anyone ever heard of it or tried it? Seen it on YouTube .