replacing them sure won't hurt.......

 

Egad, those things are nasty! Among other things they were not properly torqued, and they appear to be a heat range too cold.

I'd think that if the truck was running before you started working on it, and suddenly won't run at all, the spark plugs are probably not at fault. They need replacing, but they're not likely to fix the problem. Chances are very good that you've left something disconnected or knocked something loose inadvertently, and that the best bet is to get in there with a flashlight and check everything that's anywhere near where you touched the engine, including reopening and reconnecting every electrical connector you got close to.

While plopping in some fresh spark plugs now that you've got those out is a very good thing indeed, it's best to inspect rather than change things while you've got an active problem. If it ran before the wrench it should run after, and if it doesn't you should always look again and again at what you've touched.

 

if it used to run, and not it won't - don't change anything that's not going to directly fix the problem, as you are wasting time and money and potentially introducing new problems.

DON'T change the anti-freeze, don't change the plugs, don't do a tune up - none of this is your problem.

DO determine if you have a lack of spark at the plugs, or a lack of fuel.
you can test fuel by removing the air filter, opening the throttle plate, and spraying starting fluid down the TB while an assistant turns the ignition key. if it cranks, then you have a fuel problem. by using a spare plug, you don't even have to remove an existing plug, which is one less thing that can go wrong.

you can test spark by checking for voltage at the coil when ignition is on, and/or plugging a spare spark plug into a plug wire and grounding it to the engine block while an assistant turns the key. bright blue spark is good. no spark is bad.

also double check everything you touched,
and everything you might have touched by accident.
report back.

 

Alright, I changed the spark plugs and the truck started right up. With the truck starting up it has reminded us of some problems that the truck had before the whole water pump and starting issues, I will be using this forum again very soon. Thanks for all of the help everyone.

 

yeah, like i said, DON'T change the spark plugs. LOL.

 

So going back to the original question - is the brand of water pump that important or just get a quality replacement?