Need help - 1968 Dodge Dart convertible - door won't open!

Spray WD-40 on the latch and lock mechanisms from the inside.

Then jiggle, push in some, jiggle some more, next blow out the lock/latch mechanism with a long tube blow gun > compressed air.

Try opening it again, make sure and spray lube the outside button and linkage too.

Worse case senario give it a push with a Porto-Power from across the back of the seat from the other door frame and see if you can get it to pop.

If you have the car supported up on jack stands, set it back down on it's wheels so the car frame structure can relax back to its original working positions.

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