Mikill

I read somewhere to do this, so you don't change the wrong one. Possibly an SSM. I thought it was in the PPT, but it's not. Yes there is an SSM explaining this on the chassis cab. They can be reversed or in normal order.

Headgasket failure would not cause this. I only seen one head gasket failure on a 6.4 by the way. More than likely overfueling injector melted piston which was probably caused by overfilled crankcase. I haven't seen one in a couple years but I'm sure it still happens.

You or the customer can fix it cheap now and pay better attention to draining the HFCM or pay a $10,000 bill later. Like it's been said earlier it's there for a reason.

I'm down in Texas and we have a hard time removing some of these exhaust bolts and nuts on the 6.4 so I can just imagine how it is up north. 6.4 is probably one of the worst engines ever made as far as work trucks go. We don't see too many problems with personal vehicles but these fleet trucks have been gone thru several times.

Have you checked fuel pressure?

I would definitely check for a restriction before replacing injs

If you look at the TSB it's coded to a valve. This truck seems to have valve problems but the ones we have seen have all been 450 and 550s.

Yeah I did one a few weeks ago. There is no tear down required if the tsb applies. Just remove glow plug and if its damaged then replace long block.

For the past couple of years I have replaced a few front cover gaskets. Seen quite a few oil coolers leaking as well

Check wires on ECT. I have seen a couple with bare wires touching

I understand all that but the first coolant leaks I starting doing on these were radiators not hoses. This was back when the 6.4 first came out.

MAP sensor. I have had two of those so far and both times it's been the MAP sensor

I still don't see how the coolant hoses leaking cause the radiators to leak because radiators have been leaking before the hose o-rings started leaking. Radiators are just junk

We have a company with alot of 6.7 trucks and every one of them come in needing EGR coolers. All have high idle hrs.

^^^^When the lifter is mushroomed at the bottom and can not be removed the cam lobe is usually trashed as well. The were saying to replace the short block when that happens because of damage to the lifter bore but not sure about lately. Haven't had one in awhile.