Dt466 coolant leak - Maintenance tips are provided such as checking 2006 – 2015 Navistar International DT466 Coolant Reservoir Dorman 603-5104 OE#s 2591625C92, 2599039C91, 2602872C91, 2602943C91 Over time coolant reservoirs become susceptible to heat and engine vibration and eventually crack and leak. With a failing engine's fuel system, there's no constant fuel flow throughout the engine and into the combustion chamber. Jan 13, 2024 · Overheating in DT466 engines can stem from several factors, the most common being issues in the cooling system. Look for coolant leaking from the air compressor oil drain-back port. 2006 – 2015 Navistar International DT466 Coolant Reservoir Dorman 603-5104 OE#s 2591625C92, 2599039C91, 2602872C91, 2602943C91 Over time coolant reservoirs become susceptible to heat and engine vibration and eventually crack and leak. Apr 15, 2013 · I have an 05 International 4300 with the DT466. I pumped it up to 15psi and showed no leaks (hot). I am not impressed with this motor what is the point of having a engine with liners that need to be repaired every 150,000 miles. pull valve cover first if coolant is getting into crankcase it will mix with oil and mist into valve cover causing milk shake looking mess in top of valve cover. Coolant in oil pan. Page 106: Combustion Leaks To Coolant Finding the oil leak on a DT466. A pretty common failure in the IH 466 if coolant additive quality has not been kept perfect. Our 6. I have a major water leak from the front cover, right above the water pump. its def leaking from #5 liner. INTERNATIONAL DT 466 engine pdf manual download. 8. Then we put everything back together and ran the truck for 30 mins but it's still leaking diesel into the cooant. truck did not reach 140 degress and was pushing coolant out around the resievour cap. Coolant drain plug (underneath compressor bracket) location We fix a few coolant leaks on a vintage dump truck. What I found was a coolant leak, and it's not an easy fix!Part 2 here: https://youtu. • If coolant is leaking from air compressor, repair or replace air compressor. engine overheated one day with no low coolant notice,did not know there was no low coolant sensor. - Common problems include fan clutch bearing failures, radiator damage, and injector sleeve issues that can allow fuel in the cooling system. Oil pressure is higher than coolant pressure in the oil cooler, so oil will go into the coolant before coolant will go into the oil. When the engine is shut off and there pressure in the cooling system, coolant can and usually does leak into the EGR cooler and runs down into the exhaust manifold and then into the turbo. 2. The rad shop i had test it couldn't heat it to 190 degrees and pressurize it at the same time. I notice a slight trickle of coolant, seems to be coming from around # 6 injector. This could be part of your "white smoke" issue. Mar 20, 2016 · There is nothing messed up with International's parts system. Oil leaks in the DT466 engine I finally get the DT466E timing cover put back together and out the door. should have coolant flow from egr cooler and a/c bracket, egr vavle if it is a maxxforce. It's coming from a bolt hole that is between the tensioner and alternator. 0 sends the needle right to 18psi, only because the head is cracked and it leaks fuel into the coolant. Thanks to my buddy Matt for making this and letting me use it here. Issues with the Fuel System. If you perform an oil analysis they'll be able to tell you if you have coolant in the oil. If pressure is dropping rapidly, coolant may be leaking from the EGR cooler into the exhaust manifold or tail pipe. Oct 21, 2016 · When the Cooler leaks, coolant will travel into the EGR valve, Intake manifold and then into the cylinders. But it sounds as if you need a more experienced parts person. Nov 11, 2021 · Cause • Cold engine • No Intake Air Heater (IAH) operation • Poor quality fuel • EGR stuck open on startup • EGR cooler leaking coolant into exhaust • Loose or failed injector • Bent connecting rods • Worn piston rings • Low compression • Coolant leaking into the intake manifold through the cylinder head after letting it sit over night it dropped from 15psi down to 11psi. They sent the injection pump in to get rebuilt since it was off at this time and had a few leaks on it anyways. Any coolant leaks within the DT466 cooling system can disrupt the proper flow and level of coolant, contributing to overheating issues. Or worst case scenario is you have coolant leaking past the cylinder liner o-rings and into your oil pan. Also for: International dt 570, International ht 570. Jul 22, 2010 · Check the oil cooler first. Customer: After the vehicle overheated twice, I refilled the coolant, but it wouldn't reach the full level. Our dt466e leaked coolant only when it was shut down after driving, found a few loose hose clamps. 125 foot lbs of torque to Aug 27, 2019 · Posted 8/27/2019 14:24 (#7700382 - in reply to #7700364) Subject: RE: DT 466. Nov 17, 2014 · Posted 11/17/2014 22:35 (#4184762) Subject: DT466 International truck, coolant in oil Chipman , Alberta On the way to the elevator, cruising nicely, a loud snap, the motor fluttered, I let off the fuel, then resumed nice and smooth. Lo School Bus Conversion Resources May 25, 2025 · Overheating is a significant concern in the DT466 engine. • If a leak is noticed, replace the leaking injector sleeve and test again. Mar 22, 2010 · Most of the leaks were above the transmission, its an Allison. Feb 26, 2014 · I got the truck up to operating temperature then drained the coolant and removed the coolant hoses that go from the air compressor to block (I wanted to check the compressor for leaks while hot). • If no leak is found, do step 7. I replaced it with a reman one and all was well. 7. oil cooler failure will cause oil to be forced into radiator because of higher oil pressure. Preventing leaks and loss of fluids which can lead to topping off level more frequently and diluting additives in coolant. Oct 23, 2007 · After my experience with the Dt466 I would say burn the truck to the ground. 4570Man Super Star Member. Determined it was leaking out the overflow tube only while running down the road. School Bus Conversion Resources Jun 13, 2023 · Coolant leaks. Drain coolant from the system. Mar 14, 2019 · Re-assembling Remove a replace water pump Reviva's DT-466 diesel engines are configured for International delivery trucks, garbage trucks, dump trucks, armored car, and school buses. However, if we keep the truck as a May 13, 2024 · DT466E coolant leak While on this thread I thought I would show you my fix for a customer on the dreaded timing cover coolant leak on DT466E. Unfortunately I just changed the oil and did not pay any attention to seeing any coolant in the oil. Dec 19, 2010 · I have a 1982 DT 466 in a school bus conversion. Jun 10, 2015 · Some trucks normal operating psi is well under 10psi some times near 3-4psithe caps usually vent 15-18psi iirc. tech said the air compressor 'must Mar 29, 2008 · I have DT 466 that is leaking diesel into the coolant. You have the Eaton "model B" belt driven power steering pump. Jul 17, 2011 · I had a mind boggling coolant leak for a while and discovered it by placing a clear hose on the recovery jug overflow and directed it to a place where it would puddle if draining. I plumbed them together and T'ed my pressure tester into the cylinder head of the compressor. most likly cause liner o-rings or pitted liner. It’s never been replaced and them manifold bolts was on there. long life coolant only sold in pre mixed May 10, 2019 · I have a 2007 international 4300 dt466 and I’m doing the EGR Cooler. After this I checked the coolant level again, and it had reached about 2/3. How to diagnose leak? May 22, 2011 · I have a customers 01' IH4700 with a DT 466E that is building alot of coolant pressure. And Also Why Your DT466 Maybe Getting To HOT@dairleautoclassicrestorati6892 #truckradiator#radiatorrepl Customer: I have a International 4300 DT466. It could be oil cooler leaking, the easy way to check is pull oil filters and pressurized radiator and if cooler is leaking coolant will come through oil gallery and into oil filter base. after letting it sit over night it dropped from 15psi down to 11psi. 1-verify that there is coolant in the oil. Warranty:. See How To Get Longer Life Out Of Your DT466 Engine. Engine starts instantly and runs nice. Rebuild kit about 1200$ from agkits . Sign In Upload. Nov 16, 2019 · This crusty old plow truck came in for a leaking front main seal. 4. Senior Member. duty diesel trucks - a 2006 International 4300/DT466 that is losing coolant in some unknown way. This document provides information about the Navistar DT466E and Detroit Series 40 diesel engines, including: - The DT466E was introduced in the late 1990s and is similar to the 530E and Detroit Series 40. Common sources of coolant leaks include hoses, gaskets, and seals. Oil Leaks. We took off the head, replaced the cups,put new o-rings, and replaced the injectors. It does not loose coolant during operation. Run through a few operating conditions, heat and cool cycles, high and low load etc. water pump found leaking externally, quick and cheap repair easily done yourself. Links to some tools used in this video:GearWrench 84002D 4" Hose Puller Pick, Black - https://amzn. I'm entertaining a proper in-frame rebuild or possibly just replacing the single liner. hoping this will save others time and whats left of their hair. Jun 26, 2008 · I have a dt466 that had both problems at different times. Feb 25, 2006 · if you have made sure you have no external leaks. International used three vendors on the early S series, Rexroth, Saginaw, and Eaton. Joined or a coolant leak that's leaking into your cylinder(s). Jun 29, 2010 · Coolant conditioners have been around a long time. Cause • Leaking or cracked injector sleeve with injector O-ring failure • Cracked or porous head casting in fuel rail cross-drillings. A malfunctioning thermostat, clogged radiator, or leaks in the cooling system can all lead to overheating. Skoolie Fam! About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Apr 7, 2015 · Jan 6, 2019 / Dt466 smokes terrible and I can’t figure out why. I am losing coolant and my first thought was egr cooler but I put on a bullet proof egr cooler 50k ago when the motor was rebuilt. The liner seal in cylinder 4 is leaking (I found coolant in the oil, drained the fluids and pulled the pan to verify). was gonna go ahead and replace the injector cups while i was in there. Check several times for coolant drop, oil rise or pull a sample and send it to a lab. long life coolant only sold in pre mixed Dec 27, 2009 · this is for info only, have already repaired. spent all most as much money in coolant as the pump cost. Do you have any solutions for thi? Why is my truck leaking diesel into the coolant? 1:56 PM Dec 11, 2015 · The only way the restrictiors would cause coolant not to come back to the coolant tank is if they were plugged. be/xkK Feb 18, 2019 · The coolant chamber was nearly empty, about 1/4 full. Configurations: The International DT466 engine is available in the following configurations: Dyno-Tested Complete Drop-In and Long Block Supreme. I filled it up to the line and bought an extra gallon. Look for coolant leaking around the injector sleeve and into the cylinder bore. Coolant Leaks. Dec 14, 2012 · I have a 2000 International 4700 with a DT466e. This old 4900 had a few coolant leaks, the most concerning coming from what looked like a head gasket, but turned out to be the rear half of the front timing Nov 9, 2021 · Symptom Coolant contaminated with lube oil will have oil in the deaeration tank. Coolants with certain additives form microscopic barriers on the liners which helps prevent wear. Wondering if I have an injector cup issue or something else and what would be a Jan 4, 2010 · We run a DT466 in a old IH S1900 dump truck that I did an inframe overhaul on as the liners were pitted, allowing coolant into the oil. Some causes of a fuel system failure are a leaking fuel line, a bad fuel pump, a clogged fuel filter, or fuel injectors. Tools • Regulated compressed air • Fuel Test Fitting • Fuel/Oil Pressure Test Coupler • Cylinder head test plate • Water supply Jul 23, 2020 · If you're topping off the coolant every couple of weeks you either have a leak in your coolant loop or in the heater loops. Aug 27, 2012 · I have a 4386 with a DT466 that I am seeing antifreeze around the first cylinder injector inlet on top of the head. Then, I noticed the coolant leaking from the muffler's weep hole. Reassemble, new oil, proper coolant fill/air purge and top off. It’s essential to regularly check the coolant levels and the condition of the radiator and hoses. is there any way you can give me the info for an inframe as well as the tools needed for the dt466 to properly perform the rebuild. Verify if coolant is contaminated by inspecting deaeration tank for presence of oil. International DT 466 engine pdf manual download. Mark levels on tank and dipstick. Our regular mechanic ckd at the EGR Valve, and at the air brakes system, the oil, and Aug 29, 2015 · Also, I'm not sure if the DT466 crossflows coolant through the intake like most engines, but if it does, possibly a leaking intake gasket? Last edited: Jul 12, 2019 Jul 12, 2019 Dec 17, 2017 · My 2004 non-egr DT466E spring a leak this morning, right at the top corner of the front cover behind the alternator and under the thermostat housing area. Keeping the fluid level topped off to maximum levels. Newer DT466 and NGD DT466 engines have gear driven pumps. It's Nov 9, 2021 · 6. • If coolant is not leaking from the air compressor oil drain-back port, do step 8. • If coolant continues to flow into cylinders after all injector sleeves were replaced, do step 7. com fairly straight forward. The hole is tapped, but looks like there hasn't ever been anything threaded into it. • If coolant is present, replace EGR cooler following the procedure in the Engine Service Manual. The oil in water ended up being the oil cooler. • If no leak is noticed, replace all six injector sleeves and test again. Joined Dec 1, 2020 Posts 262 Location Las Vegas, NV. Only when you shut it off and it Completely cools. 3. Took it on the rest of the drive, did push highway speeds at 2650RPM for around 30 minutes, with an additional 30 minutes of 2200RPM at 45MPH. They found some hoses leaking. Check EGR cooler for the presence of coolant. Drain engine oil and remove the oil filter. Hope that would be the case but 90% of the time it is a pitted cylinder liner. other tech stated it was over heating however it was pushing out coolant rather than boiling over. Nov 9, 2021 · Symptom Coolant contaminated with diesel fuel will have a diesel fuel odor. I also had mine tested, but it didn't show as leaking unless it was at operating temperature. That is the only way I could see the coolant tank not getting coolant in it and having to remove the cap to allow system pressure to push the coolant back up the bottom hose. to/2DmS Dec 27, 2009 · this is for info only, have already repaired. #1 . Feb 24, 2013 · Posted 2/24/2013 21:00 (#2923736 - in reply to #2923032) Subject: Re: dt 466 engine Just did one in a 1480 this summer, was O ring. After just a 1 mile drive, coolant will be foaming our of the reservoir cap/radiator cap. Nov 9, 2021 · 7. Aug 17, 2016 · Hello everyone at Diesel Garage, I have come here because we are having a problem with one of our 12 to 15 med. If the engine is in the truck, you can remove the oil pan and pressurize the cooling system and look for evidence of coolant leaking down around the liners. It’s important to regularly inspect the system for signs of leaks, such as coolant puddles under the vehicle or low coolant Feb 5, 2009 · EGR Coolant Return Kits APPLIES TO Engine Family: DT 466 Serial Number Range: 2000001-2030022 DT 570 Serial Number Range: 2000001-2030022 HT 570 Serial Number Range: 2000001-2030022 DESCRIPTION New Exhaust Gas Recirculation (EGR) Coolant Return Kits are available for truck and bus applications. Does the injector actually go through a coolant passage or does this indicate a rusted tube through the head? So far it hasn't used enough coolant to be a concern, but I'm Mar 18, 2014 · Not always will oil get into radiator. Sep 1, 2011 · A good description of coolant flow through the international DT 466 diesel engine. Things I've found online so far: Thermostat Radiator Cap EGR Air Compressor pressurizing the system Combustion gases getting into Cooling system Anyone Nov 9, 2021 · 6. 1st thought, new cap, but no help. Removing and resealing an oil cooler on an International DT466. But here is the thing that most leads me away from the cooler. Place a coolant drain pan under the oil system module. (What a mess) Apr 23, 2021 · coolant leak dt466 engine help skoolie Apr 22, 2021 #1 A_Bus_Called_Quest. But not without a few setbacks No leaks so far!Part 1 here: https://youtu. They also found the front cover was cracked, it was a $1400 cover, and took 20 hours to replace. Cause • Oil cooler Tools • Oil cooler pressure test plate • Air pressure regulator Procedure 1. The aluminum timing cover expands and contracts with temperature change and walks it around putting side forces on the thin walls that hold the gasket (they are real thin). be/_Ms Mar 22, 2005 · Having a coolant pressure issue with our Box Truck. truck was brought in for CEL being on. Causes range from low coolant levels to radiator malfunctions. tzonpf krlhmbju krph ttitt nsr yddu jrlpen nupgu ahs tjljezbe