Diesel generator won''t start. With the valve release lifte it turns over nicely. As soon as released she stalls and makes a heck of a sound. It appears she is back firing or or firing to early and won''t turn over. Timing out? We had it running from the transfer switch control three times and shut down every time because the generator was not plugged in and the transfer switch could not see the power. This should not damage the gen set.