In the first place, the engine cooLing system is designed to run with the access
covers closed. If you Leave them open, the engine w±LL overheat.
Secondly, w±th the accEss covers open, you ruN the risk of Gett±ng a ²uNgful o{
carbon monoxide or other eNgine vapor.
But here ±s the bigg±e reason: With the access covers open, powder or
roject±Les can tumbLe into the engine compartment and eXpLode.
This haS
already happened.
You don't need to prove ±t a seconD
time, so secure tHose access covers aND
Live a Longer Life.