08-25-2008, 12:04 PM
I did a compression test on the bimmer the other day and it occurred to me. You're supposed to hold open the throttle when doing a compression test.... how do you ensure that the throttle is open when there's no mechanical linkage anymore? Does the ECU actually open the throttle when you floor the pedal? I would be surprised if it did.
Any thoughts? Is ensuring the throttle is open actually that important? In our case, compression test went fine, I just don't really know what the throttle plate was doing. Obviously I could have pulled off the intake tract and checked for myself or jammed something in there, but that's kind of a pain.
Any thoughts? Is ensuring the throttle is open actually that important? In our case, compression test went fine, I just don't really know what the throttle plate was doing. Obviously I could have pulled off the intake tract and checked for myself or jammed something in there, but that's kind of a pain.
The only thing that stops a bad guy with a van is a good guy with a van