Mopar Action On-line – Tech Questions
Alfredo Cuevas, Los Angeles, CA, 1968 Dodge Charger 383
My 1968 Charger is making a loud knocking noise. I thinkit’s from the heads, the passenger’s side. Please advise on how to fix thisknocking.
Alfredo, if it’s more like a “clacking”, it could be a broken or crackedrocker arm, loose rocker shaft bolts, or bent pushrod. Just take off thevalve cover and have a look.
Beyond that, it’s much more serious. The least would be a bent valve, theworst would be a bad rod bearing / scored crank, cracked piston / scoredcylinder wall, etc. At that point, it’s time to pull the engine and have alook-see. As in, take it all apart and prepare to open wallet – wide.
Loud knocking noises aren’t good. Ignoring them invites total destruction,usually soon.