Bullman Posted April 22, 2001 Share Posted April 22, 2001 I have changed the cam from a 234 to 244 ,ignition timing is set at 14 degrees b.t.d.c. lucas ignition, unleaded fuel,octane booster additive. The exhaust is backfiring at idle,there are yellow flames within the air filters prompting me to switch off.The plugs quickly foul up making restarting difficult without taking the plugs out cleaning them,that is if the battery doesn't go flat. please advise. thanks Bullman. Bullman Link to comment Share on other sites More sharing options...
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