[V8] Giving up...No it's alive.. Road trip

[Tony and Lillie]

>----- Original Message ----- 
>
>It's melting....
>Sorry, 120c.
>Thanks for correcting
>
>
>>You really didn't mean 200c did you? :)
>>

I was wondering the same.

On the #4 issue, so you have a compression guage? Sounds like it's low,

Is the miss just at idle, or all the time? If just at idle, that indicates 
more than likely low compression. If it's all the time, there is somehting 
failing. A misfiring ign in that cylinder will also cause a black plug. Have 
you swapped the plugs from one cylinder to another?

Green coolant will not cause overheating. There is plenty of chatter on this 
subject, but it's really only over deposits caused from the green coolant. 
Either way, that's what I run in my cars. Customer cars get whatever they 
had. IOW, if they come in with green, they leave with green. If they come in 
with pink, they leave with pink. With one exception, if they come in with 
Dex-Cool they will leave with whatever the customer specifies, with the 
exception of Dex-Cool. I WILL NOT put that in anyones car.

Almost sounds like your thermostat may be sticking. Can you give the 
situations where it was overheating, i.e. going up a hill, just cruising, 
sitting at an idle, etc?

Also sounds like it may be time for an O2 sensor. I recommend the 4-wire 
Ford sensor, 1993 F150 5.0 is what I have. Last I checked it was about $45.

HTH,
Tony