Injector killer

[Brent Beeler]

Hey guys, I've noticed at work we've been changing an awful lot of injectors lately, I've been keeping a close eye on FICM voltages on these trucks, they've all ranged between 45.5 to 48.5v so I'm just wondering what could be the culprit here? Yes these trucks get run pretty hard. My personal truck is a 6.0 So I want to figure this out before I have problems.


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[mhatlen]

The main killers of injectors:

Oil maintenance is huge; the 6.0 injectors have exremely tight tolerances and dirty oil destroys them. Also heavy oil the 6.0 needs the thinner oil for only one reason: the injectors.

Low fuel pressure is the next problem; not enough fuel pressure and the intensifier piston beats away at the injector shortening it's lifespan.

The nylon screen to the hpop pump can tear and shread and that material goes straight into the injectors.

Running out of fuel is devastating for the injectors.

More than anything is the oil maintenance the longer the oil is in the engine it becomes more acidic from fuel combustion and is broken down giving the injectors less lubrication, not to mention the degrading of the rubber o-rings in the engine.

There are no good reasons for going over 5,000 miles and not to use a 5W/40 viscosity ( Ford specd. 15W/40 because 5W/40 had not been made yet) that is now the prefered viscosity.

[Tuscany]

The fuel pressure isn't the problem it's the lack of volume of fuel that kills them.

[twoicebergs]

On the fuel side, all ultra high pressure injectors (common rail as well) are suffering deposit issues due to the breakdown and precipitation of salts out of the fuel creating varnish like deposits. Some lubrisity and ph balancing additives are required to help reduce nozzle wear. As well, not running at the higher injection pressures will greatly extend the life of the nozzle on the fuel side, and the spool-valve and plunger on the oil side. Sorry boys and girls, hot tunes will definitely shorten injector life.

[Brent Beeler]

Wow! Great info guys, thanks. Think ill switch from 15/40 to 5/40 next oil change. I wish I knew what screen was on the IPR valve I'd hate to have to tear Into it as a PM, maybe if I have the turbo off sometime I'll check it out. Thanks again.


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[Hollingerpitch]

I just changed my oil from 0w40 to 15w40 on the weekend and have noticed a huge drop in power/response and start up.... I feel like I wasted a hundred bucks on oil lol

[mhatlen]

Originally Posted by Brent Beeler

Wow! Great info guys, thanks. Think ill switch from 15/40 to 5/40 next oil change. I wish I knew what screen was on the IPR valve I'd hate to have to tear Into it as a PM, maybe if I have the turbo off sometime I'll check it out. Thanks again.


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2005 MY and later engines have the upgraded IPR with a 150 micron screen with the reinforced plastic brace.

[Brent Beeler]

Originally Posted by mhatlen

2005 MY and later engines have the upgraded IPR with a 150 micron screen with the reinforced plastic brace.

Oh cool, makes me feel better not having to tear it apart just to find out.


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