Very nice project. i love isuzu pickups single cab. i have a problem with my 4JA1 engine when idling and the ac is on, engine shakes very noticeable. already check the vacum and it's ok, when ac is on, the engine revs higher sothat means may ac vacum or what do you call that is ok. i wonder whats the problem? but it is normal when i rev up.. thanks! hope you can help


Fire Fighter 4x4