Technical Little tips and tricks for garage hobbyists.

Finding which plug is fouled without pulling all of the plugs.
Shine the Thermometer on the header at each cylinder. It will be the coolest one.

 

spritz aa little water on the manifolds the one that dries up last is the winner

 

b-body, how do they disengage the pump when the vehicle is in Park? Although I have never opened up a Chrysler transmission, it has been my understanding that all automatics drive the pump with the converter.

 

I do not know the answer to that, I just know that it is true.

A little google-fu found this
"When in park, the valve body diverts the majority of the converter line pressure back into the pan, but some fluid still flows into the converter."
and
"In "P", atf is flowing everywhere, just not at the same pressures as it might be if the trans was in "N". Which is why, on a fully-cold transmission, in the colder times of the year, it's best to start the car that first time in "N", so that when you put it in "R" of "D", it moves as it should. Rather than being initially lazy if it was started in "P"."
(https://www.forcbodiesonly.com/mopar-forum/threads/start-up-in-park-or-neutral.71145/)

If that's correct, I was incorrect to say the pump doesn't do anything in Park, it is just bypassed and dumps most of the fluid back in the pan instead of through the transmission circuits.

 

The gun type temp gauges usually have a laser pointer which is real handy for testing your house A/C vents to see which ones are working, etc, without getting the ladder out. I was introduced to these many years ago, when testing the exhaust temp. on buses I was working on, just aim the dot at the hole in the stack, and away you go. They also cost many hundreds of dollars then, I bought one a while back for about $20. I use it now when checking cooling systems, you zap the inlet & outlet fittings on the radiator, and you can work out how well your system is working.