Cylinder 7 still misfiring.

[shadow98]

Ok guys we replaced all spark plugs with new ones. We also moved the coilpack 7 to 3. However after cleaing computer and driving and retesting when light came on I still get cylinder 7 is misfiring. Any ideas on what may be the issue now.

My orginal problem before moving was cylinder 7 misfire. So error is staying same cylinder.
Modified by shadow98 at 3:01 PM 8/30/2009

[maxnix]

That's not good.

Which plugs did you use?

Ever used BG44K ore Redline SL1?

When was fuel filter last changed?

What does the old #7 plug look like (picture)?


Modified by maxnix at 9:34 PM 8/30/2009

[shadow98]

I threw it away but it looked the worst of all of them.

I do not know when the fuel filter was last changed I just got the car 10 months ago.

I used the NGK PFR5G-11
Modified by shadow98 at 6:53 PM 8/30/2009

[maxnix]

Good choice on the plug!

Fuel and air filters (incuding cabin) are changed annually. If one does not know the service history, all fluids and filters are changed immediately after purchase.

Now I would have to verify the operation of the injector.

[Q45tech]

Time for the Q41 injectors to start failing!

[miata007]

How many miles on the car and when was last time time all 8 coils got replaced?

007

[shadow98]

The car has 130k miles on it. I have no idea when the last time the coil's were changed. I doubt they ever were.

[shadow98]

Ok guys we were able to diagnose the problem to injector 7 last night. Would I be better off to get this from the dealer or http://www.infinitipartsusa.com?

If you have a phone number for them please let me know as their website is down at the moment.
Modified by shadow98 at 8:55 AM 9/2/2009

[maxnix]

IoS Infternet Parts sales:

(888) 216-5328