Are dropping valve guides a common problem?

[GM Guy]

Question is as the title states.

We got a 1995 PSD C&C F450 w/ the ZF5, and it has a dead hole, and we have heard that valve guides dropping are the most common issue w/ a dead hole. is this true?

If so, how bad do you think things are internally? (we think they drove it a while like that)

 

[michael nelson]

ford will tell you it is a sensor...it works for about 30 miles-

 

[michael nelson]

ask me about what I know about them...the parking brake prob,known engine dying,and brakes and steering when this happens-

 

[Diesel Decals]

I havent heard of that happening a lot. Just pull the head and inspect, shouldnt be too bad

 

[GM Guy]

can one find out by pulling valve cover, or does the head need pulled?

 

[Diesel Decals]

Ive always pulled the head and disassembled the valves to look at the guides and seats and stuff while I was there

 

[Sparky8370]

If you had a bad valve guide wouldn't you have excessive smoke as well as excessive crankcase pressure?

 

[big block 88]

You should we had our 93 IDI 7.3 drop a valve guide and it smoked bad and ran terrible. We replaced the entire head do to the fact the piston was beatin the valve up pretty bad. Pull the head and check

 

[Diesel Decals]

Yeah its gonna smoke and run terrible