Is there any kind of test short of sending a sample to Blackstone or the like to verify if there is actually fuel in my degas bottle as opposed to oil residue from bad oil cooler O-rings?
View 7 Replies2002 7.3 F350, 190k miles ....
If there is indeed diesel fuel in my coolant, what is the most common cause of this problem? Truck has low power when towing 8 tons.
I've replaced water pump due to truck overheating and blowing off radiator cap during first hard tow up steep hill.
Replaced all radiator/heater/coolant hoses.
Replaced radiator.
I've also flushed the cooling system 5+ times now with coolant flush and distilled water. Each time, less and less evidence of brown-colored stop leak.
The stop leak looked like diarrhea, slightly chunky. After the third flush, stop leak in coolant lessened.
HOWEVER -- 4th/5th flush of coolant each still looked like brown milk. Coolant has a strange chemical smell, possibly diesel fuel.
I have a 2000 F250 7.3L and I pulled this from the overflow tank. I'm thinking it's oil since my oil cooler is leaking but just want to make sure it's not fuel and need to do injector cups...
View 2 RepliesSo I did the hutch mod several months ago and all was fine.. Couple days ago I went to fill up, cheap diesel, for upcoming trip.
Fuel gauge was working and showing just less than 1/2 tank. Went to Walmart with gift card and started pumping. Got to talking with duramax owner and noticed fuel was finished. did not pop off like the level was high in fill tube just can to end of money..
SO I get in, turn on key to get mileage to mark down miles, gallon, amount etc and noticed the fuel gauge look like it wanted to go up and then it drops to "E" and the fuel light comes on..
Yesterday I drop spare and check sending unit connection which was OK so must be issue with sending unit. ?? So I might need to take camper shell off, fiberglass, and lift bed.. too much fuel in tank and not going to be driving it enough to get down. What size are the bolts holding bed to frame and how do I need do this??
So my 7.3 started sputtering and lost power, died on the side of the road. I wasn't far from home put about 8 gallon of diesel in the tank with a couple of fuel jugs and it fired right up.
Gauge was reading 1/8 of a tank and low fuel light did not come on. (low fuel light comes on when you start) Gauge came up to about 1/2 after putting fuel in.
What happened? Gauge was always reliable and low fuel light always did work. Only work done to fuel system was had new tank straps put on a couple of months ago.
01 7.3. Cranks, won't start. Tank was at 1/4 but is full now. The lift pump runs, I can feel and hear that the motor is spinning when I cycle the key. I removed the fuel filter and cycled the key and get no fuel into the bowl. It looks like the lines are stainless from the pump to the tank so I doubt it is sucking air. I pressurized the tank with a shop vac and I get fuel coming into the filter housing. Am I missing something obvious? I have never seen an electric pump that would run and not pump fuel. I removed the suction line at the pump and don't feel any suction there.
View 14 RepliesMy friend bartered for a '99 F250, 2wd/auto, 4 door, 7.3, 258k miles.
It had reportedly sat for one year, though the expired registration sticker and other things point to it sitting for two.
It ran low on oil, sputtered and died. Oil in the degas tank. Filled to oil to mid way on the hatch marks on the dip stick.
I drove it 25 miles to my house, and the oil level is not reading on the dip stick.
The sludgy fluid level in the degas tank is unchanged. Where is the fluid going?
I will refill the oil to see just how much it lost in the 25 miles if it important to someone, but I prefer to not waste the oil.
My first plan is to remove, inspect and replace the oil cooler o-rings. Even though the dealership charged him for this, I don't trust that they did it right. I think it is the easiest and mostly likely place for oil getting into the coolant.
It does have a really long crank before there is enough low pressure oil for it to start. At the moment I think this is a separate issue.
The dealership also charged him for a replacement injector. No idea if they replaced the cup or not.
Had coolant in oil, so pulled motor. Got used motor to replace it with, thinking about doing some work on it before reinstall.
Got bellowed up pipes, injector o-rings, front and rear main seal, and will use best parts from both motors to make one. I'll also shim injector armatures back to spec.
Should I do injector cups too? What else is recommended to do at this time? Both motors are 350k or so, I was on a budget at a moment and have to make it work with what I got.
What is the effect will some oil contamination is the cooling system?
Does it significantly affect the cooling efficiency? I have some oil the coolant on my boat. I do not believe it is a lot maybe a few oz, but I have been chasing some unexplained overheating issues. Will adding water wetter solve oil issues (if there are any). The other option is Dawn and several cycles of flushing the system. ie until the cows come home!
I have a 2002 excursion and every time I try to put the coolant at the min level cold, it overflows through the cap until it is about 1.5-2 inches below the min level. Then it stops. I just did the oil cooler seals last night because I had a little oil in the coolant. Same thing happened this morning - overflowed again.
View 10 RepliesAlthough not certain, I *thought* I saw coolant run into the front drivers side injector hole when the injector was out and I leaned on the radiator hose. I had knowledge t pull them and changing the orings who were initially concerned then not concerned after looking closer.
Either I made a mistake in what I thought I saw on my first experience with injectors, or there really is a problem that I didn't know enough about to address at the time. So I opened this thread to get more info and stop hijacking 67speeda's thread, found here: [URL] ....
As per recommendations, I will check my coolant bottle for any fuel, oil, residue, etc. I am also going to reach out to my buddies and see if they saw a problem with coolant, too, or they realized it wasn't coolant and I didn't take note of it ...
It was a REALLY LONG day and my ability to concentrate had begun to slip quickly (health issues), so it's possible I missed something there. So IF I saw coolant going into that cylinder with the injector removed, how bad would that be? I thought it came from pretty high up and ran down where the injector sits..
So just a couple hundred miles ago I changed the oil and oil filter in my 99 7.3 ... It wasn't till today I noticed an oil/coolant leak ... It is on the driver side of the engine by the oil cooler ... "It isn't the oil cooler leaking already checked"... It seems to be behind the water pump to the driver side of the hpop... Where the thermostat is it is like right behind that but I can't think of what it is .... Its not the oil pump leaking ... It is leaking down and being blown back across my oil pan and oil filter... That is the oil cooler it has residue but its not the problem
View 5 RepliesSo we begin w/ another saga for the 7.3l Excursion......
A few months ago it started running like crap, real crap and blowing white smoke like crazy. Well I knew this from a previous episode and I had a bad or multiple bad injectors. I tried to trouble shoot which one it was and maybe just replace the one or two....but no it was worse than that. So Life was really busy it kinda got shoved aside until now.
I pulled all the injectors and had them rebuilt locally ..nice. They ended up being with mech for a couple of weeks because he went out of town...no problem. Well this entire time my rig was untouched and when I got them back #7 was full of water.....great, bad injector cup. #7 was the only one, the rest were dry. So I drained the radiator and the oil and left it overnight to completely drain and installed the new injector cup in #7. Next day I refilled via both heads because the valve covers were off, 4 gallons of oil and a new oil filter. Cleared the cylinders via the glow plugs and commenced to trying to get her started. Nada......just cranks, killed the batteries, recharged over night and left the box on them and still nada....but the oil was still very milky at this point.
So tonight I pulled all the injectors back out and drained the oil again, still a lot of water. This time I sucked out the HPOP reservoir and got a more milky water/oil out and I'm leaving everything open all night.
In the am I plan to check my overflow water level in the hopes it remains at the same level...if so I will reinstall all 8 injectors and refill the motor w/ 4 gallons of fresh oil and try again.
Oh, while I was attempting get her started I put my buddies Snapon scan tool on it and I got the p1271-p1278 codes w/ the buzz test. (low side to high side open circuit between idm and injector) So I found the pin test with everything connected at the idm pigtail and everything tested good. So I'm back to my not so fresh oil anymore is the culprit to it not starting.
Am I missing something here?
Also....another fun filled fact is that I seem to have a fuel leak somewhere at the rear passenger side. Every time my fuel bowl fills up, if I shut the key off it will drain down. Sometimes I can see fuel dripping quite vigorously onto my starter but I can not see where it is coming from. I have while it was dripping ran my hand along the head and the fuel lines and can not find where it is coming from. Any thoughts as to where in the hell this fuel could be leaking from?
Since changing to ELC a couple years ago, my truck will leak a small amount of coolant when I stay over night at the beach house. I haven't noticed any coolant leaks at any other times. I was down there Saturday night and it leaked about two or three tablespoons of coolant over night. I drove home Sunday, and my truck has been parked in the same place for almost 72 hours without a leak. This has happened a couple dozen times over the last two years. The elevation of the driveway at the beach house is 6' above sea level. "Home" (around Houston) is anywhere from 35' to 80' above sea level. Is there any way that the lower elevation is causing this leak? I'm pretty sure it's coming from the thermostat housing, but because I replaced the upper hose, I can't tell if the dried ELC around the housing is new or old.
View 12 RepliesEdit, I have also noticed I have been getting low on coolant, but without any noticeable coolant leaks. My engine oil still looks clean, where could the oil be going? How do I fix it?
2003 Excursion 153,000 miles - stock injectors, gt38r with new pedestal, Adrenaline HPOP, double transmission cooler.
I've noticed after some heavy towing with my camper (8,300 lbs), I've been getting a new oil leak showing up on my garage floor. I crawled underneath this afternoon and found three large oil droplets on the starter. See picture. What could this be dripping from?
I am trying to figure out the problem with my 2002 ford 7.3 Engine.
[URL] ....
It has a lost of engine coolant. The oil is 100% clean with no signs of Coolant. No chocolate milk effect. Also it makes a Odd thumping noise at idle. I think it is coming from the Exhaust Manifold.
I was searching for an oil leak forever. In my search for the leak I resealed my hpop, redid oilcooler rings and last week had a friend pull my motor to redo the pan gasket. The leaks were almost down to where I thought we had them beat. Now in the last couple days I'm losing coolant and oil....bad. there is oil on the ground mostly from the cross member. Question is did my oil cooler fix not take? I have read that a nicked of ring can cause this.
View 11 RepliesI have a coolant leak from behind my timing cover found while doing a coolant system pressure test. I do not want to remove the engine. Looking for info on successful cover install with the engine still in the truck?
View 8 RepliesI drove my 99.5 7.3 F-350 1 mile to a friends and hooked it to the OBDII to get a code for my abs light.it had not been drove all day. we hooked into the pcm and he noticed the temp at 375* it was idling. is this right he didnt think it should have been that high???Will the engine coolant temp sensor, if it were bad,show a high temp of 375*? On the OBDII it showed a temp of 375* .....
View 14 Replies2003 7.3 175,000 miles...
Saw a stain in my driveway where you normally see AC drip. Opened hood and saw degas empty.
Looking around like crazy and find wet area. Where the coolant line turns down beside the passenger fender.
Looks wet near bend going toward running board. Didn't get to inspect much but I pulled back a bit of loom to inspect shape of lines and they look great.
What could be going on?
Someone just told me I need to put additive in coolant so the injectors don't rust. I've never heard of this.
View 14 Replies