19-03-2021, 11:40 PM
(This post was last modified: 19-03-2021, 11:42 PM by A G Wood.
Edit Reason: missing word [s]
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A valve in the air supply to the leakdown tester helps as well, you can fit the adaptor to the spark plug hole with it off, and then you can ease the air on which sometimes helps. I'm assuming the engine is still in the car? You can put in top gear to lock the crankshaft but make sure you chock the wheels if you do.