update on the 08 6.4 i'm working on

[blacksnapon]

Truck develops aeration in the fuel. After driving, park it on an incline with the driver side down, it won't start. Bleed the system, it starts (until you park with driver side down). The high pressure side always has bubbles in the fuel. I'm thinking combustion is getting past the washer at the bottom of an injector. Looks like #2

 

[jasonz82]

you could run a balloon test but have fun getting to the fitting under the turbos.

 

[blacksnapon]

you could run a balloon test but have fun getting to the fitting under the turbos.

I'm probably in for that pleasure!

 

[mrxlh]

Truck develops aeration in the fuel. After driving, park it on an incline with the driver side down, it won't start. Bleed the system, it starts (until you park with driver side down). The high pressure side always has bubbles in the fuel. I'm thinking combustion is getting past the washer at the bottom of an injector. Looks like #2

subscribing

 

[blacksnapon]

Think I got it! The fittings for the feed and the return on the high pressure fuel pump are banjo bolt style. Originally they have dual copper washers. The copper ones have been replaced with viton coated steel washers. The copper ones have a torque spec of 28 lbs ft. The viton ones, 18 lbs ft. We had a slight leak ,not under pressure, but after it is shut off. The fuel would bleed down from the secondary fuel filter housing.

 

[blacksnapon]

Something like this causing a BIG headache

 

[TexasNomad]

The more I read about these engines, the more I think they are total garbage..

 

[blacksnapon]

The more I read about these engines, the more I think they are total garbage..

The 6.4 essentially IS a 6.0 with a few "hang ons". Same block, close to the same heads. The electronics are the major headache.

 

[Blue Goose]

The deal is, you don't read about the ones that are out there running flawlessly day in and day out.

 

[TexasNomad]

The deal is, you don't read about the ones that are out there running flawlessly day in and day out.

No, but I have seen many many, on the side of the road, more then I have seen of Dodge chub and yotes..

damn near every owner i've run in to says they suck for the most part.. Not saying the truck is bad, the worthless International under the hood sucks.

 

[Blue Goose]

Really.... How did you know what engine they had, or did you stop and ask?

 

[5.0Flareside]

time to put some wading boots. the chit is gettin deep.

 

[mrxlh]

The more I read about these engines, the more I think they are total garbage..

With much less issues than the 6.0 I don't see the basis for this statement?

 

[mrxlh]

The 6.4 essentially IS a 6.0 with a few "hang ons". Same block, close to the same heads. The electronics are the major headache.

Vince, how many cabs have you had to pull off of 6.0 vs 6.4 trucks?

 

[mrxlh]

The deal is, you don't read about the ones that are out there running flawlessly day in and day out.

Bingo......

 

[blacksnapon]

Vince, how many cabs have you had to pull off of 6.0 vs 6.4 trucks?

Here, neither diesel has been the problem children that you hear of elsewhere. I think its been 5 6.0, and 3 6.4 (one of them twice).

 

[DNFXDLI]

I can tell you that up at the diamond mines in NWT, all they run are F350 diesels. My good friend is heavy duty mechanic up there and tells me they have minimal problems with them...esp given the circumstances which they are run in.

 

[suprdtydvr]

I am happy with my 6.0L. I can only imagine that I would be at least as satisfied with a 6.4L. Having a true common rail injection system would be nice along with the increased stability of the head gaskets due to the larger bolt size. Those virtues however are leveraged with a truck that is paid for.....

 

[Blue Goose]

Those virtues however are leveraged with a truck that is paid for.....

Hallelujah!!!! Now that's what I'm talkin' about!!!

 

[blacksnapon]

Well, the truck finally left with the customer. It's been quite the journey! Essentially, the high pressure fuel pump, and the tank sender was the cause of the headaches. We'd released the truck to the customer, only to have it towed back. The fuel tank sender (the first component replaced per ssm) was defective. The sender has a bypass valve a couple of inches above the primary pickup. Its function is to allow fuel flow if the pickup gets plugged due to gelling. Well, the damned thing popped out, allowing it to suck air when the tank got low. The customer was not happy (damn, he's big too!).