Spark Plugs

[sakirfp]

I have about 198K miles on my 04 ST. I can not remember what kind of spark plugs I put in the truck the last time it had new ones. I want to replace the ones I got. Any recommendations. I put alot of miles on this beast and it runs great.

ANy recommendations on plugs and any other tune-up suggestions...

ANy tips on taking out the old plugs..

 

[sjr033]

Most people on here agree to stay with Motorcraft or Autolight.

 

[ChallengerDave]

Id stick with the motorcraft platinums, for the price and the kind of miles you put on its worth it. But that is just me. When ever I do a tune up I also clean the mass air flow sensor. Get the electronic spray at any part store. This is even more important if you run a K&N type filter. The oil from those reusable filters will dirty up the sensor.

 

[The Electrician]

I use Bosch Platinum IR Fusion Spark Plugs #4505 and I love them, I notice the engine idle vibration become less

 

[JohnnyO]

Motorcraft or Autolite platinums.
Know that multiple electrode plugs do not get along well with late-model Ford ignition systems.

 

[sakirfp]

I changed my plugs today.. but I think I have a slight miss in the truck now. When it is sitting at idle the RPM gauge seems to bounce a little bit down. I made sure all the plugs were gapped at .054. I think I may have a loose new wire or a bad wire.

Any suggestions on testing this idea.

 

[sakirfp]

Reseated all the wire at the coil pack.
I just got me a check engine light..I am going to the Advance Auto to get it checked out..I think I have a bad wire...and that is what is causing the rough idle

 

[sakirfp]

The Code Scanner says ..I have a miss fire on the number two cyclinder...I am going to reseat the plug wire at the coil pack...Maybe that will work..If not then when the engine is cool I will reseat the cable on the plug..and of course it has to be on the difficult side of the engine..

 

[ZombieHunter]

Make sure and use a little dielectric grease on the boot. I couldn't get mine to properly seat either without a little dab of grease.

 

[sakirfp]

after finding out that I have a miss fire in number 2. I remembered I dropped the plug a few times when trying to get it in the head. I never re-gapped teh plug or checked to make sure the gap was correct..so the gap could be way off. I know the coil pack side plugs have grease. I am goign to pull the number two plug out tonight and check the gap. I will make sure they have electro-grease on them when I put the boots back on..

 

[Schobanger]

where can i purchase a code scanner for my X?

 

[ZombieHunter]

I use an Actron I got from my brother. I found one on Amazon just now for $69.95. It is model number CP9550.

 

[sakirfp]

I found the problem

...


re-gapped it and now it is running smooth...

Next time if I drop a plug I will be sure to double check it to make sure I did not jack up the gap...