Pale oil is a napthenic base oil, not particularly noted for it's lubricity. I use it for softening plastic fishing bait vinyl plastisol for instance.

When I need to clean out rust, dried grease, and general gunk from something, like boat steering cables for instance, SeaFoam is the solvent of choice. I would not, however, want the product of that process anywhere near a fuel injector.

SeaFoam carries the gunk out, and is easily displaced and replaced with a high quality esther oil for lubrication.

 

That's good info. So in a situation like mine, with bad fuel in the system, is there any way to get it out without it ending up at the injectors? What would you use? At this point, though, I don't think I have any choice but to pull the injectors.

 

Horse is gone now, but if I had encountered that situation:

I believe there's a dangling drain hose on the fuel tank that will get most of the crap out of the bottom of the tank by pumping or siphon action.

Then I would have pulled the fuel line between the filter and the IP and thoroughly cleaned it, or replaced it. I also would have detail cleaned the fuel filter mount. New filter, frequent drain check till clear, then another fuel filter, and it would have gone.

I might have filled the first filter with a 50/50 mix of #2 and a diesel fuel additive, like Power Service.

Been there, done that. My kid's bratty friends decided it would be funny to dump a bottle of mountain dew into his gas tank. Billed the brat $100 for the clean up, which his mother took out of his hide. Hasn't talked to my kid since.

 

Well, I guess if it's any consolation to me, the truck ran rough when I bought it (I know, I know) and it doesn't run any better or worse since the infamous Sea Foam incident, so the horse had already left when I got there! Thanks again for the good info.

 

change your lift pump. mine lacked in power and missed and popped loud at higher rpm's. 700,000kms on mine, I changed my fuel filter, changed the lift pump because the pin that the little arm rides on sheered off there for it didn't function and the injector pump was doing all the work and wasn't being supplied the fuel it needed. I also ditched the stock injectors and put after market ones in. runs great now. I'm also thinking is it possible the timing has moved? look up where the factory spec marks are and maybe look into that too? good luck with her!

 

I find it hard to believe that one filter full of injector cleaner would cause noticeable damage to the pump. The directions for seafoam say to fill the filter with it, if it caused damage that fast then im sure we would have multiple posts in here with a bad injection pump after a filter change. I wouldn't get too worried about that right now.


How many miles on the truck?

have you checked for air leaks in the fuel system yet?

How about a pressure gauge to check your fuel pressure, that would let you know if the filter is plugged up again or if your lift pump is dead, it would be good to have anyways if there was crap in your system and may still be working its way through the lines. I have had a snap and pop in the engine when my filter started to gell up, it would only get so much fuel at a time, it ran fine at low rpm then broke up when it wasnt getting enough flow. Now I run a cheap water pressure gauge to keep an eye on fuel pressure to know how the filter and lift pump is doing.

 

The speedometer doesn't work, it's stopped at 95,000 miles, but the p.o. told me he has put about 25,000 - 30,000 on it, so I'm guessing around 125,000 miles. When he bought the truck it had been sitting up for a couple years, the owner was an elderly gentleman who had died. He pulled the injectors, had them cleaned and pop tested and he then drove the truck for several years. He has parked it for a couple of years due to health issues, so now we're back to square one with the truck being parked for a while. He claimed the injectors were all he did, I can see where the injector lines have been off at some point, but the injector pump doesn't appear to have ever been tampered with. He claims the injector pump is good, and I have no reason to doubt him. I have filled my filter with Sea Foam for years and have never had an issue. The fuel that came out of the original filter that was on the truck when I bought it looked like it was dredged off the bottom of some creek. I haven't checked for leaks, I don't see any fuel leaks, but it could be sucking air somewhere. I'm a little nervous about pressurizing the tank, I don't want to unseat anything. Where did you install the water pressure/fuel gauge?

 

I bought the second Gen banjo bolt from genos that has the tapped hole for a gauge. It goes in the line above the filter that feeds the pump.

Air leaks can be very hard to find, look for any damp or dirty connections, especially around the lift pump and that hard line. A little pressure in the tank helps find the leaks but be careful as it only needs a little bit.

How much has the truck been run since you got it started? Was the tank dropped and cleaned inside? Any chance poor fuel is still in there?

 

I bought the truck and drove it 5 miles to my work. I then dropped the tank, emptied it completely out, wiped it out on the inside, etc. It's clean. Put the tank back on, put 10 gallons of clean diesel in it, and replaced the fuel filter. Cranked it up, and it didn't really run any better than it did before. Pulled the pet **** on the filter and a little bit of gunk came out, presumably what was between the tank and the filter. I then drove it the 25 miles to my house, where it sits now.

 

How brittle is the rubber line at the lift pump? I had to trim mine back when I put the lift pump in, it wouldn't clamp back down.

 

I'm going to replace the fuel filter again as it may be clogged from whatever was in the lines. Then I'm going to take it out on the interstate and open it up. It's been so long since my motor was stock, somebody tell me...what do you think my top speed will be? My speedometer is broken and the speed limit on the interstate is 70 mph. IIRC, 75 mph was about top speed stock. It's a manual and my other modded truck is an auto, don't know if that will make a difference. If this doesn't work, I'm going put a gauge on it and check my fuel pressure and go from there.

 

Mne will do 95 but why don't you just borrow a handheld gps with you for the speed, very accurate. (if you don't have one)...Mark

 

Well, I finally found time to pull the injectors. Took them up to the local diesel shop and had them pop tested. All of them came back at 210 bar except one, which was 200 bar. They were all clean. Well, they want $42 a piece to reset them to 245. That's $250. So, I'm thinking, for $150 more, I can just get a set of new injectors. I may have other issues with fuel supply, etc., but I have to start with this first as a process of elimination. So, my question is: For this truck, 93 club cab dually with manual transmission, daily driver, towing less than 10,000 pounds, I'm looking at either Bosch 190's or DAP 5x.012. They are both the same price. Does anyone have any real world experience with either injector on a similar setup? Other mods I plan to do (for now) are Gillette's 16cm2 60mm turbo housing, M&H timing spacer, fuel pin and turn the pump up some. Or does anyone have a better suggestion for injectors? I don't want POD's, but something in the $400 price range. Thanks in advance.

 

I've been running 190s for years and am happy. With my auto I get 16mpg around town, 12mpg towing whether its 4 ton or 14 ton and 18-19mpg out over the road. When I recently redid my head I took the 190's out and they tested fine with about 50K on them.

 

You have a similar setup as me, except for the 16 cm housing, and I get 18-22 mpg with stock injectors. Mine is 2wd, but I wouldn't think it would make that much of a difference. Is that the kind of mileage I should expect with 190's? I was thinking my mileage would either stay the same or go up slightly. Now, the 190's are going in a different truck, but that mileage seems low to me. Anyone else running 190's?