Need Help Changing Spark Plugs, '98, 4.0 SOHC

Jun 26, 2004 8 Replies

For a 6 cylinder engine, I managed to change the 3 plugs on the driver side w/o any problems. But the 3 plugs that are on the passenger side are a nightmare to remove. The 2 closest to the firewall appear impossible to access. Is there a trick to these? From underneath the car perhaps? Or do I need to remove the cylindrical object between the engine and the fender? Any and all suggestions are appreciated. Tom


You forgot to mention that removing the "cylindrical object" is gonna get real exciting, real fast.... especially on a hot day.

Honest, folks... if it was all that easy, I'd be out of a job. However, it ain't rocket science..... if someone isn't sure of what an object/connection/line/whatever is - find out before you touch it. There are a million and one "gotchas" lurking under the hoods of our cars. Going under the hood sans a little knowledge is setting ourselves up for a Darwin award....

Take care...... oh, and lose the WD40 for engine stuff... it contains silicon - sure death for O2 sensors. I might be anal, but I have yet to poison an O2.

Silicone???? It would be hard to spray sand out of that spray can.

Really? That is the first I have heard that. Are you sure? The can only says "contains petroleum distillates.

Their web site does not list any silicone on the MSDS sheet:

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Not that I'm a big fan of it as a penetrating oil. I prefer PBblaster. But WD-40 is OK to spray on wet ignition wires, etc. If it has silicone in it I certainly would not want to do that...

-Fred W

I would just caution any readers that anti-seize should not be applied to the first couple of threads or beyond the tapered seat of the sparkplug. I do use it with aluminum heads only and VERY sparingly. A little dab in the wrong spot will cause a misfire since it conducts electricity. Also, it should be noted that silicone compound is to be used when "greasing" the boots. It is non-conductive, moisture-proof and won't melt and run out when the sparkplug gets hot. H

My experience with the Fords is that you cannot fix a damned thing without sacrificing at least one skinned knuckle to the Ford god of trucks. Once blood is drawn, everything is smooth as silk. Henry ford was a very cruel man.

"Jim Warman" sputtered in message news:OzsDc.14199$_5.11124@clgrps13...

No need to remove it. By using a small blow torch to gently warm the "cylindrical object", I can soften it enough to bend it ever so slightly to allow my impact wrench to reach the 3rd spark plug! :p

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