Throttle MUST be open all the way or the engine will not get all the air possible to compress for an accurate compression reading. Can you breathe very well with your hand over your mouth? Count the same number of compression strokes for each cylinder. Re-test with a few squirts of engine oil in each cylinder. Don't run the battery down or the slower speed of the piston will give inaccurate readings.
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Today's Featured Article - An AC Model M Crawler - by Anthony West. Neil Atkins is a man in his late thirties, a mild and patient character who talks fondly of his farming heritage. He farms around a hundred and fifty acres of arable land, in a village called Southam, located just outside Leamington Spa in Warwickshire. The soil is a rich dark brown and is well looked after. unlike some areas in the midlands it is also fairly flat, broken only by hedgerows and the occasional valley and brook. A copse of wildbreaking silver birch and oak trees surround the top si
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