Question about 2001 Ford Excursion

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Is a V10 with only 9 cylinders going to be reliable?

A spark plug failed in # 4 and the porcelin component and part of the tip went into the cylinder. This evidently damaged the cylinder wall since when a new plug was inserted, the technician reported "Fails 23% leakdown on #4 cylinder 64 PSI compression. Needs to be at 120 to 135 PSI." Upon consultation with me, they disconnected the #4 fuel injector to avoid damage to the catalytic converter from raw fuel blow by.

The engine runs rough at lower RPM, but it is less noticable to not noticable at highway RPM. If I take the truck out of overdrive, the RPMs increase enough even at lower speeds that the vibration is not noticeable.

I am a hot air balloonist and use the vehicle for towing a trailer to out of town events, 95% of milage will be on the highway.

How reliable will this vehicle be? Assume I test drive it for 200 miles before depending on it for any towing.

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The porition of plug that went into cyl may have also damaged the valves.I would be very concerned a valve may break and fall onto top of pistion and destroy everything.A v-10 running on 9 i would not recomend towing anything.find an engine and replace.

Posted on Oct 21, 2008

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