Is this for a diesel application? I usually only see vacuum pumps on European turbocharged vehicles these days. The gas engines available in the US did not come with vacuum pumps that I know of. They just take off manifold vacuum to power the brake booster.

A quick/easy inspection would be to tee in a vacuum gauge and see how much it's pulling. If you have a spec range you can just compare. As with all positive displacement pumps the flow will increase with speed so make sure the spec isn't at some set engine RPM as it might show below spec at idle.

 

Sorry forgot to specify 2.0 gasoline CTV (Europe)

 

I don't know why you'd do any of these "maintenance" checks or tests on a car with 200K that's running well.
I've never heard of a brake booster failure but there were a few bolts somewhere in the drive line you were supposed to retorque. Nobody ever did but they definitely aren't the ones you circled. They hold the whole front hub and bearing on.

 

I don't know why you'd do any of these "maintenance" checks or tests on a car with 200K that's running well.
I've never heard of a brake booster failure but there were a few bolts somewhere in the drive line you were supposed to retorque. Nobody ever did but they definitely aren't the ones you circled. They hold the whole front hub and bearing on.

well, I usually work on my motorcycle, but I wanna learn to work on cars too, recently changed the water pump and alternator as well as the serpentine belt.

i wanted to check everything while I'm at it. gotta check the valves too since they've never been checked and might be out of spec...

i usually follow maintenance schedules very religiously on my motorcycles, so I wanna do the same on this car....

manual calls for inspecting the vacuum pump every 195k/10 years

about retorquing those bolts, I'm probably not gonna touch them as it's very unlikely they'll come loose now, but i do have a tendency to mark all important bolts on my motorcycles with a marker... so if anything gets loose i can spot it, thought I'd do the same on this, but I'm not quite sure what the manual means by "half shaft bolts"

 

Should be changed……

 

Why are you saying that should be changed? Because of the darkness above it? If it tests out fine I wouldn't touch it. Could have another 50k miles in it.