I just purchased a 2001 V10 F-350 dually and was wondering if there is a way to tell if the Spark plugs have been replaced? The vehicle has 140,000 miles on it and the vehicle passed emission (Maricopa County - Arizona) with flying colors. I'm just trying to get caught on issues associated with the Triton.

 

Take them out and look at them.

 

That's the plan as soon as I get some literature on how to do it. I also don't have any special tools if they are required to do the job.

 

https://www.ford-trucks.com/forums/1...l#post12447503




Check this how to out.

 

Nothing special needed unless you don't already have a 7mm socket, spark plug removal tools, and a feeler gauge or spark plug gap tool.
Just be careful not to break the electrical clips when disconnecting the coil and injector. Unplugging the injectors isn't really necessary but I like to do it for clearance.
And since you have a V10, be sure you don't forget that extra one way in the back on each side.

 

Thanks for the post...this is why I like this type of forum!

 

That's awesome as this list doesn't display any special tools needed.

 

A nice tool to have is a magnetic 6" swivel spark plug socket. I have a Gearwrench one from Amazon but KD version is recommended as well.

I used Krewat's tutorial here.

https://www.ford-trucks.com/forums/4...ug-change.html

My takeaway from all the research I did before doing my own plugs is to torque them down more than the Ford recommended 11 ft-lbs. I did 20. Others have had success with anything from 15 to 25.

 

Thanks for the added info on this subject.

 

Yes, you will have to have an extension on the spark plug socket. If you don't want to spend on a long socket and the extension pulls off, you can duct tape the extension to the socket to hold it together. Works great.

 

The one item that I will not need are extensions but I am due for a new sparkplug socket as the one I will need has issues with the rubber insert inside.

 

I have found it necessary on these Ford mod engines to have a spark plug socket that will grip the plug as you send it down the hole since the spark plugs are way down in there.

I also like to start threading the plug by hand by turning it backwards until you feel it step off that last thread, then spin it on in forwards. This method has worked flawlessly for me.