View Full Version : good vac when hot ??

03-08-2008, 06:02 PM
when i start the car the vacuum is around 18 when cold. after 10 seconds it drops to 12-15.. but when it starts to get around normal operating temp at idle, it goes back to 18 ?? what could it be ?

also i have kind of a rough idle. i just replaced the sc tensioner spring with a magnum powers one and i dont hear anymore noises inside the sc. but the other two tensioners still bounce, do the tensioners mess up with the idle ?