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Yes. Keep this in the back of your mind with everything you come across on the truck until you get to know it. There have been countless, yes countless, threads on here of new owners who have bought other peoples problems - unfortunately. Owners realize they have x,y,z wrong with the truck. They get a price of $X to fix the problem and decide to dump it instead. Of course they find a way to mask the oil leak, the bad FICM, the stiction, the weak HPOP, the coolant puking, the bad headgaskets, etc.
Originally Posted by texastech_diesel
IMO the least wasteful (in time and money) option is to get some gauges on it and start ruling out options with facts and results. We can play 6.0 hypotheticals endlessly, but hard data narrows it down faster.
YES! YES! YES! YES! YES! YES! YES!
This is a $40k - $50K truck. Possibly you paid $15k - $20K second hand. The engine is a $7k engine. Spend another couple of bucks on a sensor reader like Edge Insight CTS, Scangauge II or Torque App (There are others. Search the internet and this site). Add a fuel gauge.
The fuel gauge could have paid for itself in this particular instance if you had damaged the injectors. I use mine when I replace my fuel filters. It'll tell me when I can crank the engine, I don't rely on a specific number of times I've cranked the key. I wait for the correct PSI.
Like Byron has said HPOP leak or do you know if the oil cap is After market ? the OEM style is short vs tall same with the Filter, I'll dig up a pic for you to look at
It ran out of fuel and was hard to start after that.
It was starting fine up until then.
What would the oil filter have to do with it in this situation?
It was the guys daily driver , its almost got to be something to do with the fuel run out wouldn't you think?
The injectors are oil fired, so poor oil filtration can cause several fun and exciting failures on a 6.0L. And no, I wouldn't assume anything is related to running out of fuel. Air is bad for injectors, but not instantaneous failure bad. Your issues sound a lot more like regular 6.0 problems that show up over time and don't cause issues until they combine into something. It's small things even a DD might not notice right away because they come on slow, ie longer or harder starts and the slow hot restarts. They might have all started popping up and he bailed out of the truck because he finally realized things were hitting crisis level on needing to get repaired.
But again, all this is a guessing game until you get either hard numbers or start checking tests off the list.
Like Byron has said HPOP leak or do you know if the oil cap is After market ? the OEM style is short vs tall same with the Filter, I'll dig up a pic for you to look at
Its a aftermarket oil filter I used , I didn't see this info before I did it or I would have got a Ford one.
An incorrect oil filter isn't a short term issue, as long as the cap it matched with the correct brand filter. Mix-and-match between filter and cap allows unfiltered oil to pass through and causes issues over a longer time span.
Your immediate issues are the hard cold start and hot no start. An oil filter won't cause one either of those so quickly. Gotta get the hard numbers to know what's going on.
It started or didn't start the same before the oil filter and after the oil filter.
I have no way to get numbers on it.
Is there anyway I could have gotten air in it , when it ran out and I messed with the filter then changed them?
The guy that sold it to me didn't just get rid of it , hes a car dealer and a friend it was his daily driver he bought a new King Ranch. So whatever it is , its not something that's been going on.
For everyones info I havnt given him a dime so Im sure he didn't sell me a broken down truck.
What did your friend say he did to the truck (if anything) in all the time he owned it? Studs, STC fitting, HPOP, dummy plugs, FICM, any of that sound familiar?
Who was doing the maintenance for your friend? You've indicated the oil cap and filter were aftermarket. Did the fuel filters look like the new ones you bought from Ford?
What oil was he running?
What oil are you running?
Have you checked the batteries or FICM voltages?
Do you think you will get gauges or will you try and solve this without?
What did your friend say he did to the truck (if anything) in all the time he owned it? Studs, STC fitting, HPOP, dummy plugs, FICM, any of that sound familiar?
He didn't do anything to it and doesn't know f anything has been done to it.
Who was doing the maintenance for your friend? You've indicated the oil cap and filter were aftermarket. Did the fuel filters look like the new ones you bought from Ford?
I didn't buy from Ford the ones I bought and used are aftermarket.
Don't know what brand the old ones were.
What oil was he running?
15-40
What oil are you running?
15-40
Have you checked the batteries or FICM voltages?
Put charger on the batteries all night just in case.
Do you think you will get gauges or will you try and solve this without?
Ill probably have to haul it to town unless something pops up here to change things.
Hard to get into a garage around here , my favorite place is a 2 week wait.
Not many diesel techs either around.
Well like Mentioned before a set of Gauges will steer you down the right path then you wont need the Mechanic, unless the work is out of your scope , the gauges don't lie and all the help here I'm sure it will get figured out