ok i checked the compression on my friends nissan pathfinder 2 days ago with no problems. it is a v6. it had a 7th "plug" which kept it from starting. my b16 is another story. it has 4 plugs. one for each cylinder. but when i take one plug out it will not turn over. help is appreciated

 

you need to disconnect your dizzy and remove the spark plugs.. Crank the engine with the TB all the way open. You need to crank the cylinder about 6 times... Did you open the TB on your friends truck?

 

unplug the injectors so you dont get cylinders flooded with fuel