One of the bolts that holds my upper manifold on broke off the other day when I was gorilla glue-ing my butterfly valves. I'm missing a bolt on the back of my manifold as well.
I'm just wondering how I could tell if I had a vacuum leak or not?

 

I lost two of the ones in back, those just keep the manifold planted to the engine I believe. I hate those bolts anyway And which bolt broke off? You probably don't have a leak, but its something that should be replaced. And idle won't necessarily mess up at idle, but during acceleration you would notice it.

 

A leak CAN mess up your idle and you may start hearing a whistle.

 

yes it can, and spray some soapy water on it.

 

Ya, go arround spraying something over the area where you think it may be leaking. If it is, you will see it.

 

I have a MEVI. It was one of the bolts holding the butterfly cover on.

damnit. one of the bolts holding on the EGR tube is completely rounded off as well so I can't even change my gaskets. This car is really ****ing pissing me off. I feel like I'm am lacking about 50 horsepower one night and the next night it feels about normal.