Re: hot engine hard starting

Posted by fredkanter On 2016/7/12 12:14:54

Tom,

You are correct that it does no isolate a particular cylinder but just one cylinder is usually not the cause of hard hot starting.

My suggestion does isolate a single system, the accelerator pump circuit. There are many possible causes but only the accel pump circuit can be diagnosed without any tools or meters except possibly a screwdriver (or coin) to loosen the air cleaner.

I find it best to do the simplest analysis first if it is a likely cause. The second simplest would be to compare the cold and hot starting voltage at the starter to diagnose resistance and battery condition.