Corolla crank no start (sometimes)

[jackaple80]

My toyota corolla 1.6 2005 e12 only starts when it feels like it. To make it quick and short, the fuel pump runs, i can hear it buzzing. You turn the key the engine spins but never starts. I have checked the spark plugs. they are fine, the compression is 150 cyl 1 140 cyl 2 155 cyl 3 170 cyl 4. I cannot understand why it doesnt start. It could take 20 attempts or at as little as 4 but never less than 4 goes if it doesnt start and fire the first time. And yes most of the time it starts and runs the first time you turn the key. A warm or cold engine apparently has no affect on it.

[kcorro]