EDCivic
18-11-2007, 01:15 PM
I have noticed of late that once the engine has warmed up in our 91 twin carb civic, and the under load the engine now rattles (pings). I have checked the timing and all seems ok, and when the engine is cold and under load the engine also runs ok. Is there some other advance/retard mechanism apart from the vacuum advance that I'm not aware of or should be checking or is it the way I am checking the timing (the vacuum lines do run into a box that is mounted on the firewall and it has a wiring loom attached)