1992 Z34 wont start

[mjtr21]

my father and i looked at autozone on how to fix it and he said it's not worth it. besides the left rear strut is seized/blown and i need new mufflers. thanks for any help because i appreciated it.

[kismetus]

Check the fuel pressure regulator. I had the same problem and it turned out that the vacuum diaphram in the regulator degraded to the point that when the engine was running it would suck gas into the intake manifold. Here's two clues: 1) Immediately after you turn off the engine you may smell gas in the throttle body 2) Fuel rail doesn't hold pressure right after you turn off the engine 3) Disconnect the vaccum line going to the regulator and check if gas seeps out of the line. 4) Idle fluctuate up and down and stalls, then hard to start. Good luck.

[mjtr21]

haha i dont wanna sound stupid or anything but can i check for spark with any spark plug? i have an extra one here that is brand new but it is for my dads truck. can i use it to check for spark even though its for another vehicle? thanks.