It's possible. A valve that is too loose has a shorter lift and duration which does have an effect on fuel/air mixture or expelling of exhaust gasses after combustion. I would think valves too tight can cause more damage than too loose.
__________________
RRGrassi
70's Southern Pacific #5608 Fairmont A-4 MOW car
13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.
91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K
90 Dodge D250 5.9 Cummins/5 speed. 400K
|