I'm hoping it runs jus waiting on the baterry to get here for ez start how do I tell in meantime if motor is even good on it
is the engine locked up / crank rotating?
if locked up: (if free spinning skip to step 2)
1:
(nitro engines, unless suffered catastrophic failure, typically only lock up because fuel is gummed up in the crankcase, or pinch is really tight).
i would start by pulling the engine out, should be 4-6 screws on the bottom of the chassis, and slowly and carefully disassemble. main goal is to remove your backplate assembly and glow plug.
pour some nitro fuel into a container so you can use it as a parts bath, dip the crank case and slosh it around a bit, attempt to rotate crank again. then repeat. it might take a bit of force, but dont overdo it.
once you get it to rotate: keep sloshing fuel in the crankcase and rotating the crank to flush gummed up fuel from it.
replace backplate assembly,
2:
Roatate crank, are you getting "pinch" at TDC of the piston without glow plug in hole?
install glow plug, are you getting a fair amount of compression with glow plug in hole?
if yes to either of step 2, motor should be fine. (barring damaged parts in between.)
if no to both, can grab an SH engine for right around 60$ to throw in the truck.