20-03-2021, 10:05 AM
(This post was last modified: 20-03-2021, 10:15 AM by A G Wood.
Edit Reason: Added sentence, and corrected spelling
)
Locking the flywheel is the ideal way, but I'm a bit puzzled as to why the engine rotates if its in gear and the rear wheels are locked?
It may move slightly but shouldn't be more than a few degrees, definitely not 180 deg.
Is there no way you can incorporate one of these [with suitable hose tails] in the air line between your compressor air connector and the leakdown tester ? This is an expensive-ish one, there are much cheaper ones which will work just fine for your application.
Back in the day we used to TDC automatic transmission cars [which you obviously can't lock the crank by putting them in gear] by the bubble method and easing the shop air on to the tester with one of these, 99% of the time the crankshaft stayed where you'd put it.
(Sorry I can seem to be able to reduce the image to sensible dimensions)
It may move slightly but shouldn't be more than a few degrees, definitely not 180 deg.
Is there no way you can incorporate one of these [with suitable hose tails] in the air line between your compressor air connector and the leakdown tester ? This is an expensive-ish one, there are much cheaper ones which will work just fine for your application.
Back in the day we used to TDC automatic transmission cars [which you obviously can't lock the crank by putting them in gear] by the bubble method and easing the shop air on to the tester with one of these, 99% of the time the crankshaft stayed where you'd put it.
(Sorry I can seem to be able to reduce the image to sensible dimensions)