4. Why does my car backfire?
Answer: Holding the throttle open while cranking the engine over, is the most common reason that engines backfire with blown motors.
5. Why does my engine run hot?
Answer: Reasons for the over heating of a blown engine could be:
A. An Inadequate or inefficient cooling system.
B. The blower drive ratio is too high.
C. Too high compression ratio.
D. Improper timing.
E. Water flowing poorly through the manifold.