On 2009-07-29, Mark G7#9 > wrote:
> On Jul 28, 9:42*pm, Brent > wrote:
>> On 2009-07-29, GILL > wrote:
>>
>>
>>
>>
>>
>> > Mark G7#9 wrote:
>> >> If any of you gents have a minute, can you look at the below vid
>> >> please :
>>
>> >>http://www.youtube.com/watch?v=WdbbLLgud6Q
>>
>> >> Car was fine on the ride home, but right before pulling into the
>> >> garage, something happened (it started shaking, making a tractor sound
>> >> and stalled).
>>
>> >> All fluids are ok. Belts look fine. Can't see any leaks. No Service
>> >> Engine indication.
>> >> Car has 105K and the only thing ever changed was the clutch.
>>
>> >> The car starts ok but makes a horrible noise, shakes a bit and stalls
>> >> after 45 seconds (see vid).
>>
>> >> Thanks
>> >> Mark
>> > Sounds like you popped a spark plug. Pull the coils off, see if one is
>> > not loose.
>>
>> I was going to say the same thing without even listening... sure enough
>> that's exactly what it sounds like. That a plug has ejected itself.
>>
>> There are a number of kits on the market specifically for the 4.6 to
>> restore the thread with the head on the car. I used the helicoil one on
>> a '99 GT. No drilling required with that kit (the tap is designed to
>> remove the minimum amount of material). Just went slow and easy
>> with lubricant on the tap, taking it out frequently to clean off chips
>> so they didn't fall inside the cylinder. Once tapped a vacuum cleaner
>> with a small hose attached to it (homemade attachment) did a good job of
>> sucking out the few chips that did fall in. Turning over the engine
>> with the coils upluged was another step to eject anything that may have
>> been left out the open spark plug hole.
>>
>> The downside is that the kit is $200. But the tool and the tap is
>> specially designed to get down the deep spark plug wells.
>>
>> Those with superchargers and such might want to consider one of the kits
>> with more robust inserts. But those require drilling the hole larger,
>> which means more chips, etc and so on.- Hide quoted text -
>>
>> - Show quoted text -
> If so, why is there no ODB code set. I would imagine a misfire would
> be detected by the computer.

It takes awhile for the code to show up. On that '99 it didn't show up
right away. When a coolant was shorting one of the plugs on my '97 it
took miles of driving and purposely accelerating hard enough to make it
happen before the MIL came on.