Possible Injector leak on D-jet? How to check

[auriga]

Hi,
1972 280SEL, an old topic i believe.
Recently i blow a fuse which cause the car wont start due to no power to ECU. While i was trying to short the relay on fuel pump but not ECU. My car was a little trying to start a tiny bit. So my guess it, could it be one or couple of the injector have a little leak?
Btw, im having a bad MPG on the car. About 14MPG on mainly high way. Correct number?

Are there any directly replacement injectors for those d-jet? Or have to find those expensive bosch oem unit? Thanks.