What do we know about this engine? Ticking bomb or just fine?
I'm looking at a truck w/104k on it, and engine was replaced with a full long block a year or two ago. According to PO, injector failed and it ate a cylinder.
TIA!
What do we know about this engine? Ticking bomb or just fine?
I'm looking at a truck w/104k on it, and engine was replaced with a full long block a year or two ago. According to PO, injector failed and it ate a cylinder.
TIA!
I have an '08 F350 dually. It's a great engine once you put about $1,000 in it for a tuner and some exhaust work. Terrible terrible fuel mileage, but it'll pull like a freight train. The tuner + exhaust was a night and day difference. When you see the inside of the diesel particulate filter, you'll be surprised the truck could run at all. It runs so effortlessly now it almost sounds like a gas engine. The biggest thing though - about half a gallon less "oil" drains out doing an oil change. That half gallon being diesel fuel that's no longer mixed into the oil from the regeneration cycles to clean out the DPF. Of course this is "off-road" legal only....so you've got that.
Use only Motorcraft filters and follow the severe duty schedule. Drain the water separator monthly. Flush out the Ford gold coolant and go to the red extended life coolant.
Hmmm ok, what kind of mileage do you get? Im looking at about 10-12k loaded most likely. Its a box truck so aero = poop.
Dually with 4.30 rear gears and auto trans, 7.5 pulling a 26' flat nose car trailer @ 70mph. It could turn 800-1,000 less rpm on flat ground and totally fine, which is a real bummer. I'm going to slow that down to 65 my next trip to the track and see what that does. Around 12 empty. It's the aero that kills it.
OK, thanks. This is a dually auto, not sure on rear end, thats pretty bad. I get 8 with my v10 gasser and was hoping to do better.
Do you think the DPF delete mod is required asap?
java230 wrote: Do you think the DPF delete mod is required asap?
After seeing how it changes the truck, I'd say yes.
You might get a little better mpg depending on your terrain and speed. The trip from my house to VIR is fairly hilly. Keeping the boost at 20# and losing a few mph up grades vs. maintaining the same speed all the way up makes a big difference. These trucks will make 35-40# of boost in an instant, and fire-hose fuel in as a result.
ross2004 wrote:java230 wrote: Do you think the DPF delete mod is required asap?After seeing how it changes the truck, I'd say yes. You might get a little better mpg depending on your terrain and speed. The trip from my house to VIR is fairly hilly. Keeping the boost at 20# and losing a few mph up grades vs. maintaining the same speed all the way up makes a big difference. These trucks will make 35-40# of boost in an instant, and fire-hose fuel in as a result.
That sounds delightful though 
Lots of passes around me, at least one 4k one (both ways) on each trip pretty much.
With the tuner set to kill it would flat embarrass many, many cars out there.
All I can tell you, from working in auto claims, is that these things eat HPFPs like no tomorrow. When they come apart, they tend to send metal shavings all throughout the fuel system. If you take it to a Ford dealer when that happens, Ford requires replacement of basically the entire fuel system. They also have a water/fuel separator that gets full quite quickly, which can also then lead to HPFP failure.
Klayfish wrote: All I can tell you, from working in auto claims, is that these things eat HPFPs like no tomorrow. When they come apart, they tend to send metal shavings all throughout the fuel system. If you take it to a Ford dealer when that happens, Ford requires replacement of basically the entire fuel system. They also have a water/fuel separator that gets full quite quickly, which can also then lead to HPFP failure.
Useful insight!! thanks!
So watch water/fuel filter. Check.
does replacing the HPFP require cab off? Thats the other issue I see, a lot of services people seem to think need cab off, its a cabover box truck, cab does not come off easily.
I'm surprised changing the air filter isn't a cab-off procedure in these trucks, if that tells you anything...
ross2004 wrote: I'm surprised changing the air filter isn't a cab-off procedure in these trucks, if that tells you anything...
Not what I was looking to hear
I don't have facts, but when I was researching various trucks before I bought mine it seemed like the 6.4 doesn't have any MINOR problems. Nearly everything that seems to fail is MAJOR and causes catastrophic fuel system failure, or catastrophic engine failure. One of the modes of catastrophic fuel system failure actually causes catastrophic engine failure. Injectors fail "open" and hydrolock cylinders, which sounds like the issue for the original engine in this particular truck... They also have weird rocker arm issues that seem to be caused by design rather than maintenance issues.
I decided I'd rather not risk it. I bought an earlier Duramax instead.
doc_speeder wrote: I don't have facts, but when I was researching various trucks before I bought mine it seemed like the 6.4 doesn't have any MINOR problems. Nearly everything that seems to fail is MAJOR and causes catastrophic fuel system failure, or catastrophic engine failure. One of the modes of catastrophic fuel system failure actually causes catastrophic engine failure. Injectors fail "open" and hydrolock cylinders, which sounds like the issue for the original engine in this particular truck... They also have weird rocker arm issues that seem to be caused by design rather than maintenance issues. I decided I'd rather not risk it. I bought an earlier Duramax instead.
Thanks for the input! Unfortunately I am looking for a "weird truck" so its not too easy to shop other options. It seems like people either say they are fine, or hate them, not much middle ground.
Run, don't walk away from the 6.4L. HPFP issues, catalytic converter issues, blown headgaskets, terrible rust if you're in a region known for that sort of thing. Good friend of mine is a Ford diesel master mechanic. He flat out refuses to touch the 6.4L.
In reply to calteg:
Really? that bad? I have been doing reading, and it seems doing the DPF delete and draining the water/fuel separator regularly keeps them happy.
Hmm, so definitely confirmed for polarizing. A buddy of mine considers the 6.4 F450 "the only Ford he likes".
This guy fixes all the interior electronics on Fords for a living. Drives a 4.7 5 speed half ton Dodge to work etc.
Chadeux wrote: Hmm, so definitely confirmed for polarizing. A buddy of mine considers the 6.4 F450 "the only Ford he likes". This guy fixes all the interior electronics on Fords for a living. Drives a 4.7 5 speed half ton Dodge to work etc.
I'm a Ford guy but maybe he "likes" them because he makes good money fixing them faster then the "shop time" given to fix them?
From all my reading its either they are great, no issues, or they suck and blow up....
The chassis is an 11/07 build date, so earlier on in the run, but the longblock is new as of a year or two ago.
Setting up a time to go look at it.....
In reply to jimbbski:
No clue if I'm honest. If I remember right it was his dad's truck that actually hasn't had any problems once they got it to quit blowing intercooler pipes off after they upped the boost. Lots of power though.
I always thought it was the 6.0 that was the short fused grenade.
From the months of research I did, I will break it down:
6.0L - Problematic motor, all problems usually eliminated after bulletproofing
6.4L - Not as bad as 6.0L, but still has some underlying issues that the 6.0L has, still needs bulletproofing to make it a good motor.
6.7L - All issues resolved, good motor.
SyntheticBlinkerFluid wrote: From the months of research I did, I will break it down: 6.0L - Problematic motor, all problems usually eliminated after bulletproofing 6.4L - Not as bad as 6.0L, but still has some underlying issues that the 6.0L has, still needs bulletproofing to make it a good motor. 6.7L - All issues resolved, good motor.
Kinda what I am seeing too. People seem happy with the 6.4 after DPF delete and tune (1700-2500$$) The 6.4's are much more budget friendly though...
java230 wrote:SyntheticBlinkerFluid wrote: From the months of research I did, I will break it down: 6.0L - Problematic motor, all problems usually eliminated after bulletproofing 6.4L - Not as bad as 6.0L, but still has some underlying issues that the 6.0L has, still needs bulletproofing to make it a good motor. 6.7L - All issues resolved, good motor.Kinda what I am seeing too. People seem happy with the 6.4 after DPF delete and tune (1700-2500$$) The 6.4's are much more budget friendly though...
Don't forget the EGR delete, that is the most problematic issue.
Yeah the F450 mentioned earlier has had the EGR and DPF delete done already. I asked him about it, it's apparently making 700hp to the tires with no problems. I imagine it's probably had the typical "bulletproof" treatment as well.
SyntheticBlinkerFluid wrote:java230 wrote:Don't forget the EGR delete, that is the most problematic issue.SyntheticBlinkerFluid wrote: From the months of research I did, I will break it down: 6.0L - Problematic motor, all problems usually eliminated after bulletproofing 6.4L - Not as bad as 6.0L, but still has some underlying issues that the 6.0L has, still needs bulletproofing to make it a good motor. 6.7L - All issues resolved, good motor.Kinda what I am seeing too. People seem happy with the 6.4 after DPF delete and tune (1700-2500$$) The 6.4's are much more budget friendly though...
Yeah the DPF takes care of that as well, pulls the whole filter out. Im still thinking about it.... My only ohter concern is the 6.4's seem to get crap mileage.
You'll need to log in to post.
