Quick query re the 4JJ1 engine in a 2007 Rodeo - I need to pull the fuel pressure limiter valve off but it's been fixed on very tight. Couldn't get it to budge even with a breaker bar. Anyone with experience that would advise for/against using a rattle gun to remove this valve? Common rail is still attached to the engine so I'm a bit nervous about applying force that could potentially damage the common rail itself.

 

Managed to remove the valve using a 1m breaker bar (only had 1ft breaker previously). Did it without removing the common rail itself.

 

im not sure but use to work on heavy equipment but a wrench and a hammer sometimes worked better because of the sudden strike and vibrartion instead of force alone