Forum Discussion
j-d
Jul 28, 2014Explorer II
If your chassis is new enough to have "Tow/Haul" on the shifter and not OD Off or "Overdrive" you are well beyond the problem years. Bryan as usual is right on the money. 1997-99 "Modular" or "Triton" engines ALL had too few sparkplug threads. Ford issued new heads called "Performance Improved" in 2000. In V10, that upped the HP rating from 275 to 305 AND added threads. But, again as Bryan points out, SOME PI heads were mis-machined. The alignment from threads to seat was a pinch off. If the engine was V6, all three plug holes would be wrong, all four for V8, all five for V10. Various plants made the heads and not all were affected. Bryan says it was corrected in 2003. My information was 2004, BUT there's always the issue of the Chassis often being a model year older than the year assigned by the coach builder. A Ford dealer may be able to tell you, by VIN, which heads your specific engine has.
An acquaintance asked for the VIN when I was shopping for our coach with 2002 chassis (signature) and came back saying heads were OK. I think he ran the question past an engine remanufacturer.
200-SEVEN?!?!? Don't Worry Be Happy.
All of the above does NOT pertain to Three-Valve Triton/Modular engines as used in F-Series. The E-Series has always been Two-Valve, so don't get derailed by talk about 3 valves, 362 HP and sparkplugs breaking. Different issues. Amazing though that Ford managed to 1. Create a sparkplug problem with too few threads. 2. Flub the correction with machining errors. and then 3. Create a whole NEW set of problems with Three-Valve.
An acquaintance asked for the VIN when I was shopping for our coach with 2002 chassis (signature) and came back saying heads were OK. I think he ran the question past an engine remanufacturer.
200-SEVEN?!?!? Don't Worry Be Happy.
All of the above does NOT pertain to Three-Valve Triton/Modular engines as used in F-Series. The E-Series has always been Two-Valve, so don't get derailed by talk about 3 valves, 362 HP and sparkplugs breaking. Different issues. Amazing though that Ford managed to 1. Create a sparkplug problem with too few threads. 2. Flub the correction with machining errors. and then 3. Create a whole NEW set of problems with Three-Valve.
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