Have a Car Question? Ask a Mechanic Online.
Hi, my name is ***** ***** looks like the number 4 hit the piston the hardest, but you need to have all the valves replaced and the seats ground to do this properly, the only way to tll which one is bad for sure, is with a flow test, the machininsr can do this, bit to go all the way down to where you are at, its best to just have the cpmplete head rebuilt, are you planning to do this your self?
to do the valves, the valves have to ground properly and seated, this riquires a special maching tool, do you have all the tools to grind the valves and seats?
No, it just bends the valves, it is easier to just buy a rebuilt head, it takesn specialty machines to surface the head, and grind all the seats at a proper angle, or just take the head to a machine shop and have them rebuild it, but yes, all the vakves shuld be replaced,Tim