engine missing but clear after unplugged mas

jk kelly

Nov 12, 2012
engine has a miss at idle but not when driving that i can tell, unplugged the mass air flow sensor and it clears up, so i went and bought one and still the same thing, took it back and got another one and still the same thing. has anyone had the same problem before. this is a stock gn except for exhaust
Check for vacuum leaks

Also. You need to narrow down which cylinder(s) are missing.

While the car is running, disconnect each injector one at a time.
The engine should start to limp when you disconnect the injector
if you disconnect an injector and the idle doesn't change at all then that's your bad cylinder.

If you've figured out which cylinder(s) are not firing properly
you can start checking to make sure its getting fuel, and spark.