Can you hide a bad injector and glowplug problem? - Ford Powerstroke Diesel Forum
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Old 01-24-2011, 07:58 PM
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Can you hide a bad injector and glowplug problem?

I just bought a 2005 F350 with 123,000 miles.

Before purchasing the vehicle I had it taken to Ted Russell Ford in Knoxville TN. They ran diagnostic test on the truck and took it for a drive as well as a general look over. Truck came back clear of all codes, fuel pressure was good, and egr valve was clean. They did find a lose turbo hose and tightened that up.

I test drove the truck for about an hour driving it all around Knoxville. Did interstate driving and everything in between. I gave it hell and the truck ran great.

Bought the truck. Fuel level was low and I stopped to fuel up. Took about 33 gallons. Drove 100 miles back to Chattanooga and sensed nothing.

Drove it around town for 2 days and noticed nothing except for a small stutter when I went up my drive which is steep incline.

Headed out Friday night and was on the interstate. Until this point I had driven truck only on level areas. Started up a long ascent and about a mile into it the truck missed and started to act like it was starving for fuel. Headed back home with mixed driving. Pulled the water plug and chocolate milk came out followed by a lot of water. Replaced both filters with motorcraft filters. Previous filter looked to be a wix with no wrap around the seperator.

Drove the next day with no issues. Next day I go up same hill on interstate and almost same spot truck does the same thing as before. Drive back home and park it. Both times it did this I got no check engine light.

Took it to Southeast Dielsel this morning and they called me after lunch to tell me I had some water in filters but that the truck had thrown codes. Told me I have a bad injector and 2 faulty glow plugs.

I'm having a hard time with the timing on this and that it happened so quick after my purchase. Is their a way to temporarily mask these issues? Could the water have caused them?

Any insight would be appreciated.
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Old 01-24-2011, 08:13 PM
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Quote:
Originally Posted by caneintn View Post
Headed out Friday night and was on the interstate. Until this point I had driven truck only on level areas. Started up a long ascent and about a mile into it the truck missed and started to act like it was starving for fuel. Headed back home with mixed driving. Pulled the water plug and chocolate milk came out followed by a lot of water. Replaced both filters with motorcraft filters. Previous filter looked to be a wix with no wrap around the seperator.
Well, the fields highlighted in bold red definitely can't be good for anything in the fuel system, ESPECIALLY the injectors.

Quote:
Originally Posted by caneintn View Post
Took it to Southeast Dielsel this morning and they called me after lunch to tell me I had some water in filters but that the truck had thrown codes. Told me I have a bad injector and 2 faulty glow plugs.
I wouldn't be surprised at all with that diagnosis. For what it's worth, it only takes ONE cylinder not pulling its weight to make all the difference in the world. Your glow plugs would only be considered a cold starting aid. But a bad injector will definitely cause what you describe.

Given the information provided above, I would run down to your nearest Ford store and pick yourself up a new HFCM (part number PFB-93) along with the update harness (part number 6C3Z-9F759-A), an update fuel pressure regulator that bumps pressure up to 65 psi from the previous 55 psi spec (part number 3C3Z-9T517-AG) and even an upgrade to the knob style water separator drain (part number 6E7Z-9C082-A) to rid yourself of any fuel pressure issues once and for all. Oh and course, replace the faulty injector too. Once all this is done, make sure you fuel your truck up at a known good supplier that sees a regular flow of diesel trucks fueling up often.
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