Shower of sparks I think.
Are the starting vibrators working properly? You can time the engine but if the vibrators do not work the ignition wil be advanced and give starting problems.
I watched a pilot attempt a start on a 300 which resulted in the starter arriving in kit form on the concrete. He said oh it does that about once a week!!!!!
On further questioning it became apparent that he was unaware of the vibrators existence, A check revealed neither was working, a quick fix and hey presto no more wrecked starters.
Put Shower of Sparks in to Google. There is a lot of information including the manual online
Last edited by ericferret; 12th Jul 2013 at 19:57.