[dieselshadow]

:wgtt:

Did you set the cam timing correctly?


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[dieselshadow]

Spray some WD-40 around the carb and intake manifold (use the straw and not too liberal) while the engine is running. If the engine changes how its running when you hit certain area, you found an air leak.

The new noise along with the hiccup sounds like a timing issue. That's why I asked about your cam timing. You might want to check the valve lash settings again too.