With that compression, there should be no trouble starting. Some suggestions:
Check for GOOD spark when it is not starting. If a GOOD spark is present, then the problem is elsewhere.
Check fuel pressure when it is not starting. Pressure should jump up to spec as soon as the key is turned on. Lo-w fuel pressure will definitely cause hard starting. BTW, I have already found one Toyota car with symptoms like yours that had a bad fuel pump.
Another thing to check for is plugged exhaust. Usually caused by a melted catalytic converter. This would cause a drastic loss of power. It could also cause hard starting.
As far as cam timing goes, if that timing is off (slipped a tooth as another poster suggested)m it will set a code telling you that it is out of sync.
Bear in mind that an engine needs 3 things to run: 1) compression 2) correctly timed spark 3) combustible fuel/air mixture.
Compression being that small bit off spec will not cause a starting problem.
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Today's Featured Article - Fasteners: The Nuts and Bolts of Nuts and Bolts - by Curtis Von Fange. The nuts and bolts of nuts and bolts is an interesting and essential piece of knowledge that applies to our older tractors. An improperly torqued capscrew on an engine head or a shear bolt that is too hard on the driving shaft of a bushog can create havoc and make an expensive and uncalled for repair. Let�s examine the purpose and design of these fasteners in order to ensure their proper use. Fasteners are probably one of the aspects of mechanics that is given the least amount of thought.
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