Ford 6.0L Power Stroke Diesel :: Coolant Flush After Oil Cooler Replacement?
Mar 28, 2015
I just had my oil cooler and EGR cooler replaced, and I'm now consider doing a coolant flush with Restore/Restore+ to ensure the coolant system is clean. I know this might be backwards and perhaps should have done the flush first, but schedule and such did not allow. I do have a coolant filter.
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Truck has never been flushed. Would you try and back flush through oil cooler or just do a regular flush according to the procedure in the tech folder?
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This weekend my friend and I plan on doing a coolant flush, new Mishimoto thermostat housing with high temp thermostat and install a Mishimoto coolant filter.
Truck currently has some unknown green coolant in it and Im going to replace it with Rotella ELC. I plan on doing a couple hose water flushes then follow with about 5 distilled water flushes. I've been reading about putting some Cascade in on first flush to dissolve any silicate goo that might be in there hanging out. I might give that a try. Im sure I can manage this part from all the stuff I read about doing flushes.
This is the part that looks like a little more work involved than the flush. Doing the thermostat kind of worries me because of the tight area in there to work with the fuel line and the EBP sensor being right there. The current thermostat holds temps around 175-185 under normal driving. I bought the new Mishimoto thermostat housing with the high temp thermostat installed in it when they had their pre sale going on for the housing.
I decided to just go with the whole thing because of all the stuff I read about people having issues with the thermostat not fitting the older housing correctly since Im certain I have the original housing from 2004, like everything else that's still original on my truck. I plan on removing the thermostat before doing the flushes and then installing the new housing and thermostat and coolant filter before I add the ELC.
The coolant filter install looks fairly simple to do so I should be ok with that.
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I'm planning on doing the regular scheduled coolant flush but not sure if it can be done without any special equipment.
One dealer said they don't do many diesels but have a machine to do the refill and quoted ~200$. The other does more diesels but hasn't done a flush in a while and quoted ~500$ and said he does it old school by draining everything out and then water flush followed by refilling the systems.
Which one is right? Can it be done in the driveway? Which is the correct coolant for the refill and are any additives required after filling?
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Is there a way to fill up the reservoir for hpop and cooler after replacement? I didn't want to burn down the starter and kill batteries cranking all day until everything is full. I did the usual upgrades on the motor and about ready to try and get it started up. Where does the oil drain to when filter is removed?
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Got everything done today. So I thought. Went for a drive. turbo not building boost. I checked the map hose and barb. Clean. Checked connection at ebp and vct, both plugged in. No exhaust leaks. turbo shafts feels good and spins good. made boost fine before repairs. 2006 6.0 f250 .....
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2004 6.0 90k miles... Oil cooler plugged & coolant puking due to egr cooler flash boil.
Flushed the coolant with tap water then replaced water pump and tstat weekend before. This week backflushed heater core & block. This weekend backflushed the oil cooler. My coolant system would be considered severe contamination due to tap water use resulting in rust. Average ect was 195-205 & avg eot was 230-240 before flush. Here's a baseline before flush.
Pulled the oil cooler exhaust cap, opened both block drains, pulled lower radiator hose, & hooked up otc blast vac. The pressure was pretty intense holding the hose into the bore just running water through it. Hit the trigger about 20 cycles of water then air blasts.
Filled with 1/2 gal of restore & tap water. Ran it for 2 hours with RPM 1k+ 95% of the time. Drove at 65 mph & grabbed some peak temps.
Then dumped restore while hot, was pretty cloudy but not that dirty. Let engine cool then filled with tap water, ran for 10 mins then dumped again. Stuck hose in degas with only the the drivers block plug pulled & revved engine a few times to have the water pump push any crap out. Pulled the oil cooler exhaust cap, opened both block drains, pulled lower radiator hose, & hooked up otc blast vac again. This time the back pressure on oil cooler was much less vs first time.
Took a mason jar with restore plus in it & boiled it in water. Got it up to 190 then poured it directly into the oil cooler & let it sit for 30 minutes. Then backflushed again.
Put rest of the whole gallon of restore plus in & topped off with tap water. Ran again for 2 hours with RPM 1k+ 95% of the time. Drove at 65 mph & grabbed some peak temps.
Dumped restore plus while hot & it was very green & contaminated with rust. Topped off with tap water, ran for 10 mins at 190 then dumped. Revved the engine again with hose in the degas bottle & only drivers block plug out to blow more junk out. Filled with tap water & dumped again.
It was late last night so I filled it with distilled & parked it. Plan to do 3 straight distilled water flushes this week running rpm 1k+ for 1 hour each time in hopes to rid all the chemicals.
The backflush didn't result in lower deltas, but it didn't puke from the degas bottle at all during both chemical flushes. The oil cooler definitely needs replaced but at least it's not puking anymore & will hopefully stay this way for about 1k miles of driving so I can let the coolant filter rid anything that breaks loose during driving. My hope was to get some sort of flow across the egr cooler to stop the flash boiling puking & get as much junk out of the system as possible. So I guess there's some sort of achievement in the end.
Currently running cheap regular green (mixes with all) elc. I am running the cheap stuff because when the coolant was puking a gallon of coolant every trip i couldn't justify upgrading to the Rotella ELC yet. Plan is to flush with rest of restore(1/2 gallon) after oil cooler r&r then switch to Rotella ELC.
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My orange one leaks, bought a blue one. How the heck to I install it? I have decent tools.
I reviewed the threads on coolant flush and fill, and bought a coolant filter kit, I will be doing that at the same time.
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I had a bunch of down time from knee surgery and needed to replace the oil cooler. All OEM parts were used except for egr cooler being sinister that came new but hadn't installed. Truck ran fine but deltas were getting 20-25 while unloaded. I have replaced some of the pigtails when needed, but having it apart for the other work. I looked very close at the main engine harness which was oil soaked and carefully unwrapped it checking for any problems. A couple of the pigtails were replaced and all re wrapped with abrasive type tape. All connections looked good but hit the key and no start just cranking over. Did it a couple more times and it fires but rough. Trying again and it's sounding new. Shut off re try no start. I didn't touch anything other than egr cooler oil cooler and wiring harness...
Koeo. Koer
Ipr 14.8. 33.4
Icp. 2. 950
Icv .23. 1.09-1.43 fluctuated
Ficm in 12.9v cranking 48.5 and 48.5 running.
Batteries are fully charged with trickle chargers
13.9 at batteries
Fuel bowl is 57 then 55 if it starts.
Every so often it's showing ficm sync 1 and sync 1 and starts and runs smoothly. It's non consistent. I've checked continuity and get from pcm pins 2ohms resistance. I'm thinking wiring harness but really cleaned it and checked it thoroughly. I've hit the wall. How to track down my issue?
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I'm getting pretty comfortable with these forums now. Not sure if this is in the right section, but even if it was, I'm not sure how to find the right one. I recently purchased Bullet Proof Diesel's Air-to-Oil oil cooler along with the BPD oil filtration. I've already drained the oil, but do I need to drain the coolant as well? I have read of people doing a complete flush before even installing a new oil cooler (OEM oil cooler). That way once it is installed, it doesn't have all the grit and sand pumping through it right off the bat. But does it matter with BPD's system? Should I go ahead and drain the coolant completely before beginning this job?
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I installed a BPD EGR cooler about 4 years ago just as a preventative measure (along with an oil cooler) in my '06 F-250 6.0. About 6 months ago some coolant was found to be coming down the rear of the engine and onto the garage floor but only in the mornings after cooling down and even then not every morning.
A couple weeks ago I did a coolant flush and put the red ELC coolant in and now I can see better where the coolant is coming from. It appears to be coming out from the O-ring between the cooler and the intake manifold. I did check the torque on the stud and bolt and they are tight.
Is there a way the drop the cooler enough to install a new O-ring with out going through the whole process of removing the intake manifold and everything that is associated with that? The thought is daunting...
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Just bought a 2005 F250 PSD, got a smoking deal on it. It has 321k miles and has been very well taken care of however I do believe that it either needs a new oil cooler or has bad head gaskets. Pictured below you will see what the coolant looked like when I let the first batch lose. It does not seem foamy, which is interesting to me, however there is NO EGR to cause this soot.
About the truck:
- It was bulletproofed at 50k miles (EGR delete, ARP head studs, etc).
- There is no puking of coolant (drove it 100 miles from where I purchased it and nothing)
- When the truck is started you have to let it warm up for about 10 minutes,otherwise it seems to not have full power. (was going to reflash the ECU in hopes this repaired that problem).
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My buddy install a BPD air/oil oil cooler in his 2003 F250 last week and now there is coolant pouring out the tail pipe. I haven't seen it but he tells me there is quite a bit coming out. It wasn't doing this before we installed the BPD oil cooler. Normally I would say bad EGR cooler but his EGR is deleted. This is the 3rd BPD cooler I've put in and this is the first time I've had any issues after the install. The install went smooth other than we broke the radiator and had to install a new one. I feel bad cause I'm hoping it wasn't something I caused but I just can't think of anything I did during this install that would cause coolant to be getting into the exhaust. He just had it towed to the local Ford dealership.
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I have a 04 that has 153k on it. 4" cat back exhaust with no cat. SCT tuner running a custom street tune. New FMIC with the extra tune on it. Head gaskets where done at 90k along with ARP studs. EGR cooler, The oil cooler was cleaned, New coolant tank. 1-new head and The cooling system was flushed at 90K. All done by the dealer along with some other items. Installed a bypass coolant filter at least 60k miles ago.
I have been having a no heat issue sometimes at idle this past winter and a mystery loss of coolant. I replaced the cap with a OEM one. I did a vacuum test on the coolant it held at 25 inches for well over a 1/2 hour. Pulled the egr valve it looked somewhat like tar inside not 100% dry. At startup it sometimes blows some white smoke and other times it's black smoke. I've had the scan gauge on for the last week to check my deltas.
Running 65mph the deltas stayed around 10 degrees diff.
Running 70mph the deltas stayed around 14-16 degrees diff.
Yesterday just running around rural roads 55mph and under the deltas stayed around 10 degrees diff.
I have not found a lower pressure gauge to do a coolant pressure test.
It does look as though it has burped the cap. Because of the deltas I'm thinking a plugged oil cooler my be the problem.
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I'm about to replace my IPR and my thermostat, and just watched a video saying after replacing the thermostat you need to bleed the air out of the system to get rid of air pockets so you don't overheat the engine. Is this true and if so how do you do it? Also, how much coolant do I need to drain before taking off the upper radiator hose?
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Had a coolant leak I finally traced to the rubber hose on an egr delete (previous owner installed, not sure of brand). Looks like the jackwagon who installed it cranked the clamps way too tight and they eventually split the hose. I have a piece of heater hose that looks like the right diameter and cut to size should fit fine. I guess I am just looking for some reassurance that it would be ok to use in that situation...
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I recently had my injectors changed at Ford and while I was driving it started dumping coolant. If the leak can be cause from the injector replacement or if they didn't put something back together right... 2005 f 350 6.0...
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So a dead thermostat forced me to drain the coolant in my E350 7.3L. I noticed the previous owner had green coolant in the van so I decided to do a flush and put in the right coolant. I used Shell Rotella ELC. Well, I noticed after coming home the other day that the van was leaking coolant, upon inspection I noticed its now leaking from the water pump, then today the drain valve sprang a leak! What the HECK is going on!? Is it possible that the seals were shocked when I changed the coolant? Not looking forward to doing a water pump replacement on an E350... sure is crammed under the hood.
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What is the consensus on this setup? Is it worth the money? Or is it more hype than function? Their logic behind it definitely seems to make sense.
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I've had my early 99 f350 7.3L for a lil while now. Starting to see few problems surfacing. while doing my weekly fluid levels found oil in coolant and after looking around found oil covering bottom of driver side engine. As far as i can see it looks like oil cooler leaking from front side.. Should i just replace oil cooler or rebuild?
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Just found out that my EGR cooler is bad. How big of a job is this/how much down time if a compatent tech is doin the job?
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