Another engine question
Since we seem to be on a roll here, perhaps someone could offer an idea about the following:
The O-320-D3G in our 1981 Warrior has become picky about starting. It won't pick up first try and needs 6 primes from cold to get it to fire at all. When it fires it kicks out the Bendix. However, it will start on subsequent crankings without further primings, but needing up to 4 attempts. It has a modern lightweight starter.
The engine is well proven (1850 Hrs) but has good compression and minimal oil consumption. The engineers have checked plugs, mags, timing, manifold for air leaks, primer (3 cylinders) and anything else they know about without any change at all.
I don't pump the throttle after someone else set it on fire doing that. I appreciate that the starter might be too fast for the mag., but the problem has developed since that change.
I don't see why it shouldn't start first time and would like to know the true cause of the problem. Ideas anyone?