Big Blue24
Comp Diesel Sponsor
After the blow-up, we could not locate the throttle return springs so either they were blown off and missed in the track cleanup (unlikely but possible), or the throttle return springs were missed during the rushed slam the engine into the truck and go racing (likely but no one knows for certain). As Seth mentioned, none of the cylinders went cold and the pump internals were in great shape so this is most likely a self-inflicted stuck throttle incident and just so happened to occur when the air shutoff failed. The take-away lesson is make dang sure everything is ready before making a run down the track when you're playing with a 16mm pump and (3) GT55 chargers!!!