Originally posted by PSI Racer
I have 2 Sirio engines, a 12 TRPPRO and a 21 PRPro. They are both leaking from the glow plug. Does anyone know the cause of this? The plugs are tightened down really good, so I don't know what the problem could be.
I just got one of these engines (S21PRPRO) and I'm having the same problem--I can see fuel bubbles around the glow plug and fuel is leaking (lightly spraying) from under the head. Anyone know what might be causing this? I've already tried replacing the head button.