Looking for some more input before I pull the trigger
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Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
Looking for some more input before I pull the trigger
Ever since the fuel gel problem I had a few months back, the truck has been having a few little problems I've been trying to sort out. Symptoms are low throttle response when cold, lower mpg, power seems down from what it was, more injector noise when cold or under a load... I think that's about it. Injector o-rings and fuel pressure have been suggested as the most likely suspects. I'm about to pull the trigger on new o-rings and a fuel pressure gauge, I just want to make dang good and sure I'm headed in the right direction before I spend the money.
Oh and FYI, I changed the fuel filter after the gelling problem and have put some 2,000+ miles on the truck since then with no other fuel related issues. Any crap that may have been in the system should be long gone by now. The one other thing I should probably do that I haven't is inspect the pick-ups in the tanks... its been too cold to wrestle with fuel tanks.
Oh and FYI, I changed the fuel filter after the gelling problem and have put some 2,000+ miles on the truck since then with no other fuel related issues. Any crap that may have been in the system should be long gone by now. The one other thing I should probably do that I haven't is inspect the pick-ups in the tanks... its been too cold to wrestle with fuel tanks.
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Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
I can't check fuel psi without the gauge (this is the story I'm telling my wife, don't spoil it for me!!!
)
Postmaster
Joined: Jun 2009
Posts: 2,566
Likes: 1
From: Monroe/Ellensburg, WA
Smoke as in white smoke or blue smoke... And you keep telling her that but under the cover of darkness, run out there with a tire pressure gauge and check it so we know! Also, what color is your fuel in the fuel bowl? Is there oil in there?
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Joined: Aug 2006
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Before you do anything else ,check the fuel pressure . Get a good gauge then you can use it to isolate the oil pressure in the heads to verify the O rings ...
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Joined: Nov 2007
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From: West Texas
Oil will get in the fuel more likely with bad o rings. Really, I'd just replace them. It's way past due just from it's age. It can't hurt. Do the glow plugs also while in there, with MOTORCRAFT plugs. and might as well replace the fuel pump too. It's about due to leak in the worst possible place. Any fuel hoses that even look questionable should go too. YOu can get black fuel injection hose at about any auto parts store for super cheap that is rated for diesel too. Just don't go in asking for the specific hoses. It'll be 10 times more then.
I still can't believe mine started right up the past few nights with it below zero out and the fuel in my big farm tank about gelled solid. It was the same thing in the truck tanks. I just went through all of this stuff too.
I still can't believe mine started right up the past few nights with it below zero out and the fuel in my big farm tank about gelled solid. It was the same thing in the truck tanks. I just went through all of this stuff too.
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Thread Starter
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Joined: Jul 2003
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From: Newport, WA
James- I get white smoke in the AM on a cold start but nothing unusual.
Craig- the FPR screen was clean when I changed the fuel filter... I have not removed the wire mesh strainer from the bottom of the FPR but the small hole in the side of the fuel bowl was spotless. I don't believe I have fuel in the oil, and yes I have AE.
Rick- I don't have a gauge I trust right now, I need to go buy one.
RRanch- glow plugs are new OEM as of May, all the fuel lines on the motor were changed when I swapped out my HPOP this summer.
I also have long crank times when warm and a rough idle when warm and have eliminated every potential source for that problem other than injector o-rings already. For $60 bucks it can't hurt to re-ring them anyway. Truck has 163k miles on the ticker and until I replaced the glow plugs this spring the valve covers had never been off.
Craig- the FPR screen was clean when I changed the fuel filter... I have not removed the wire mesh strainer from the bottom of the FPR but the small hole in the side of the fuel bowl was spotless. I don't believe I have fuel in the oil, and yes I have AE.
Rick- I don't have a gauge I trust right now, I need to go buy one.
RRanch- glow plugs are new OEM as of May, all the fuel lines on the motor were changed when I swapped out my HPOP this summer.
I also have long crank times when warm and a rough idle when warm and have eliminated every potential source for that problem other than injector o-rings already. For $60 bucks it can't hurt to re-ring them anyway. Truck has 163k miles on the ticker and until I replaced the glow plugs this spring the valve covers had never been off.
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Thread Starter
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Hotshot
Joined: Jul 2003
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From: Newport, WA
If the pump was suspect, wouldn't it be leaking? I don't have electric fuel, it's all stock.
Postmaster
Joined: Jun 2009
Posts: 2,566
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From: Monroe/Ellensburg, WA
My guess is no. Knowing what the fuel pressure will tell you.
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Joined: Nov 2005
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From: San Ramon Ca.
The pump doesn't have to be leaking externally to fail. Like any diaphragm pump they can fail internally. At least to my way of thinking. Of course I could have my head up my tail. Anyway if the FPR is all gunked up your not going to get good fuel flow / pressure and that will cause the pump to fail regardless. The pump may not be bad but I'd pull the bowl, clean and o ring the bowl and FPR before diving into the injector o rings. My thoughts anyway.
