Mercedes M273 Leakdown test
I have done leakdown tests on other cars I've owned but they all had manual transmissions which allowed me to 'lock' the engine from spinning when applying air pressure to a cylinder from an air compressor.
How do I keep the engine from spinning now that I have a Mercedes E550 with an automatic transmission when doing the leak down test ? I know there are flywheel locking tools but I was looking for an easier way to accomplish the lock.
I was also thinking of using less pressure (I used 100psi when doing the other tests) but am concerned that I may not get very accurate results.
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