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perkins problem

Bill Jackson Hello We have a perkins wich wont start
Bill Jackson OK I am hoping for help;a neibor replaced the block in his massey- an a4-236 perkins. The pump aligns at the C mark just like the book shows at 23 * btdc. At tdc the valves on the opposing cyl are both slightly open, the int opens3 flywheel teeth btdc and the exh closes 5 teeth atdc. I am suspicios of the cam timing . Any help here would be kindly appreciated
ponymare With the pump aligned at 23 degrees btdc, are you sure the #1 piston is on compression stroke, and not the exhaust stroke.

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