2000 F150 CNG Spark Plugs

[homersimson]

I need to replace the spark plugs on my 2000 F150 CNG, do they take a special kind of plugs from Ford? Or can I just buy platinum plugs from Pep Boys?

If I need to buy from Ford, does anyone know the part number?

[cnghal]

Re: 2000 F150 CNG Spark Plugs

If it's factory, there should be an EPA sticker on the front of the radiator by the battery showing plugs and gap. I personally use Autolite Double Platinum (APP103 or 104 I think) and don't forget the anti-sieze compound on all the plug threads.
If it's got over 100k miles you may want to replace the O2 sensors also. The condition of the plugs should tell you what the sensors are covered in.

[ashtonmotors]

Re: 2000 F150 CNG Spark Plugs

Do not put in platinum plugs unless copper plugs are not available. Copper plugs are far superior for CNG vehicles. NGK copper plugs are a good way to go. This is not a job that you can do yourself if you have a factory CNG Ford F150. The cng fuel rails are in your way. It will cost you some bucks to get the plugs changed on that vehicle. Have the cng injector pipe o-rings replaced at the same time!!!! There are 16 o-rings and they cost about $10 each. It is a big job to tear down the engine to get to the plugs. You just as well have the o-rings replaced while you have it torn down. The o-rings will often start to get hard and leak after about 8 years. It will cost you another $700 to tear your engine down again to replace the o-rings so do it at the same time, even if they are not leaking yet. You will pay about $750 to have the spark plugs and o-rings replaced at our shop.

[cnghal]

Re: 2000 F150 CNG Spark Plugs

Wow, I must be doing it wrong. I have done a half a dozen F-series and about 3 dozen E-series sets of plugs and don't remember removing the fuel rails. Other than the rear most passenger side plug accessability on the F-series, it should take about an hour, maybe two your first time. A 7mm socket and u-joint plug wrench should be all you need.
If you do have to pull the fuel rails, a full set of o-rings can be had at any good parts house for $10-12. Just be sure it's fully depressurized first and wet the o-rings with a little assemly lube to ease install.

Maybe I should start charging Utah/Dealer prices for parts and service.
I could have a 3 day work week.

[epyle3]

Re: 2000 F150 CNG Spark Plugs

http://www.ford-trucks.com/forums/search.php?searchid=4125373

I read thru 30+ pages and did my plugs in 4 hrs. Go slow, be patient, read and ask first.

99 F250 CNG 5.4 l