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Got Slimed!

T

TravelingMan0491

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Messages
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Location
Virginia
This past week my fuel pressure guage went from being ~1.5 psi to a vacuum of over 20 psi! Figured it might have been the OPS or the lift pump since I had nothing coming out of the air bleed screw on the fuel filter. Gave me a good opportunity to install the OPS extension hose from Leroy's. Luckily I had a spare OPS and lift pump from when I first got my truck about 5 years ago (however they were from SSD... I hate them). Helped for a little bit but the vacuum in the fuel line appeared again. I decided to blow air from my compressor into the line leading to the fuel tank from the line going into the lift pump and was able to get 4 psi for a good while until vacuum appeared again. I decided to drop the tank today and found the following:





Here is a comparison of the cleaned up filter sock and what SSD sold me as their replacement:




This is a good justification to having a fuel pressure guage because I wouldn't have pinpointed the cause of the fishbitig I was experiencing without it. Thanks everyone for your previous posts on removing the fuel tank and blowing air into the lines!
 
Does your truck sit? How long? Do you know how you were contaminated? I have only gotten bad fuel once that I know of with a water in fuel light on the next day after fill up. Another time bought some off road diesel that smelled like a rotten egg. Read that indicates stale fuel. It ran ok in an old Ford tractor. I did see some blobs of stuff in the bottom of my 5 gallon jugs I store some diesel in for my tractor but did not use it.

Now I try and rinse my jugs out with a little gasoline before I go get tractor fuel and treat each container with biocide and stabil for Diesel.
 
Veggie oil never went into this tank... At least not that I know of. I forgot to mention that since I had the tank out, I have it a good cleaning.
 
Last edited:
Never mind Jay I thought you were saying something about a "PCS" on the truck.
I had many PCS in my time = Permanent Change of Station.
 
On going saga... I guess the slime wasn't the main cause.... Took it for a test drive and began to experience a drop in fuel pressure so I pulled into an O'Reilly's and checked out my fuel filter. It could've used a change so I swapped it out for a new part and bled the water line and bled the air. Thought everything was peachy and decided to drive to the nearest fuel station and promptly died while idling at a light not more than 500 yards away. Took a good 10-15 seconds of cranking to get going and promptly pulled into the station to check things out. Fuel squirts out from the fuel filter's air bleed screw so lift pump should be good. Died out again at the station and another 15 seconds of cranking I was able to whip it around into a working diesel pump. Got 5 gallons and got really good with using my left foot to brake with while shifting into neutral and keeping the RPM's up with my right foot. Made it back to base about 2.5 miles away and died out again in front of my garage while backing up. Another 15 seconds of cranking and I decided to park on the street beside my house so the boss doesn't have a hard time maneuvering around my truck with her van.
Argh! Is my injection pump toast? I'm going to swap in my known good PMD in the morning to see if that does anything but it's been remotely mounted to the inside front bumper on a heat sink for a good 3-4 years and it was a new part when I remotely mounted it. Any assist would be great while I scour the forum for similar problems to mine. Thanks everyone!
 
I do have a fuel pressure guage. If I keep the throttle going, I have positive fuel pressure. If I let it idle, I'm guessing the motor uses up any available fuel and kills itself from fuel starvation which is why it probably takes a good cranking before the motor starts again. I suppose I could jump the OPS connector and let it idle to see if it stays on... This wouldn't be the first time an OPS from SSD has been fualty.
 
To Me to, sounds like fuel delivery. Seems like air is getting in though. Usually a bad OPS won't kill the engine
 
I had that issue with fishbiting and all. I followed WW bug thread, and got Walbro,prefilter kit, new tank, OPS relay ect. I cannot get fuel pressure below 9 pounds at WOT now. I run biobor to keep the bugs away and switch to power service bug killer to keep resistant bugs from living. Sounds like what Leroy said about fuel delivery. Did you change the tank? I would still have the same issue if I hadn't changed it as slime would still be clogging spin on filter. I would just a little longer.
 
I didn't change out the tank but I did drop the tank and gave it a good cleaning and drying with a shop vac blowing air into it almost over night. Checked it in the morning and it was dry as a bone.
 
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