Hello. Have a duck at last! Probably Bj.67 , type AZ-A. Stand for a long time in a barn. Everything so far get back, like rusted brakes, scraped coals from the alternator etc. Impeccable spark, new fuel is fed over a hose (only for testing) Turns perfectly through, but does not jump on!!! Is there any trick with it? Who can help me a bit? Thank you Ingo