I just put my motor back together last night after breaking the conecting rod. I got the truck back together and took it for a easy test drive around my lawn it ran good for about 5 minitues then stalled. It wouldnt restart so I checked and replaced the glow plug. It ran fine for less than a minute. Now it only runs for about 15 seconds before stalling it will however idle if I keep the easy start pluged into the top. Does anyone know whats wrong? thanks