welcome to the garage yori - as Dave sez, it could only have been excess gas in the exhaust that got set off by the heat - back in the day we did that on purpose sometimes by turning off the engine at speed for a few seconds without pushing in the clutch, then turning it back on grin BANG big_eek

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot