Cummins Coolant Overflow/ Coolant loss/ Excessive Pressure in coolant/ Cummins ISX15/ Cummins X15

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cummins isx coolant overflow,coolant loss,excessive pressure,excessive pressure in coolant system,cummins isx,owner operator,cummins isx15,cummins isx rebuild,truck driver,egr cooler,cummins isx egr delete,cummins isx air compressor,owner operator truckers,cummins isx fuel solenoid,cummins isx oil cooler replacement,cummins isx fuel pump replacement,egr cooler leak,egr cooler detroit 60 series,excessive pressure in cooling system,coolant loss head gasket
In this video, I go over Cummins coolant overflow, coolant loos, or excessive pressure in the coolant system. Cummins ISX coolant overflow, coolant loss excessive pressure ion coolant system. EGR coolers and Cummins ISX rebuild repairs have been done to correct these issues but it is very important to troubleshoot correctly.
Check out my other videos Most common issues on ISX15
• Most Common Issues Cum...
Most Common Issues with the DD15
• Most Common Issues Wit...
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Dallas TX 75241
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[@feeneysmechanical6215]

Thank you for the videos. Great job. Here's a tech tip for ya. If the driver says I have to keep adding coolant and I don't see it leaking. Quick test. Pull the drain on the air tanks. If coolant starts flowing from the air tanks. It needs a compressor

[@leanonme1065]

Which compressor? Can you be specific please

[@carlosa.garcia.9008]

Air Compressor.

[@bryonmckinnon1521]

Excellent video and commentary ! Well produced .

[@dacoolmonkey]

Those are common problems on these Cummins engines. that combustion test is amazing. Thanks for putting these videos

[@bigjim3644]

A true mechanic. Awesome 👌

[@rorywynhoff1549]

Another great video, I always learn something from you. I appreciate they are short, sweet and to the point. Thank you!

[@daveb154]

you are good and quick to the point this is what is required

[@qrs3658]

Thanks for this video. really simplified. i like how you break down the different sections

[@derricklighten4092]

Awesome knowledge! Please keep it up! U just saved me thousands!

[@antonioalibangbang5273]

I have problem losing coolant half gallon a day no leaks found I’ll follow your advice the EGR cooler. Thank you for sharing.

[@CashisKingtrucking]

Thanks again for sharing all this knowledge with us

[@TATEXPRESSINC]

Thanks for watching Cash🔧👊🏼

[@ephesians3987]

Changed out refurbished radiators 3 times! Radiator finally holds, now the COOLANT starts leaking from some where else 😂 lol! Thanks for the videos I’m fixing on replacing the EGR cooler next I can’t get a Delete here in Cali !!! 😭

[@TATEXPRESSINC]

Hugo, you defiantly can waste some time with refurbished parts. Thanks for the sub. 🚚🔧💪

[@oscarramirez8302]

Great video! Very informative, thank you.

[@TATEXPRESSINC]

Thanks for watching Oscar.

[@kluna1000]

Great video and info! Thanks for sharing!

[@VictorGarcia-xc2ie]

Very helpful video I have a friend on the road at this moment having the same problem .

[@leanonme1065]

Can we have the update please I have a friend who has the same problem but don't know what to do

[@dwaynemurphy814]

Great information. Thanks.

[@jhonyromanesco2269]

Men just a great video like always, I learn a lot in a few minutes thank you, I love the mechanic work to as truck driver also.

[@TATEXPRESSINC]

Thanks Jhony, we will get more content out, be sure to sub. 🔧👊🏼💪🏼

[@MyWatchIsEnded]

Very useful information thanks guys

[@TATEXPRESSINC]

Thanks for watching. 🔧👊🏼

[@Jerzeyguy]

Good explanation. 👍👍👍

[@kevinlisabigmackattack1825]

Your videos are great. If you could include the year and mileage of what your working on it would be great.

[@deepmandal1256]

Really truely insane video engine coolant systems .

[@TATEXPRESSINC]

Deep, thanks for watching. Be sure to sub.

[@EduardoSilva-xe3gp]

330 degrees??? I not even knew you can get your cooling system that hot, thanks for sharing Adam

[@smokeinapeterbilt]

You would think that it would have shut down before it did damage.

[@offroad2099]

Love the videos man!! Keep up the hard work 💪

[@TATEXPRESSINC]

We appreciate the support. It is hard work but, we enjoy it. We are glad you enjoyed. 🔧👊🏼🎥

[@23thebull]

Just subscribed excellent information 👍👍👍👍💯

[@TATEXPRESSINC]

We appreciate the sub. 🔧👊🏼💪🏼

[@lancelotmasunda1803]

Thx Adam well explained

[@TATEXPRESSINC]

Yes sir. We are glad you liked it. 🔧👊🏼

[@peterags2760]

Awesome job bro 🤘🏻🤘🏻🤘🏻🇺🇸🇺🇸🇺🇸🇺🇸🇺🇸🇺🇸

[@TATEXPRESSINC]

Thanks for watching be sure to sub.

[@dementegg]

Just tested my isx15 cummins on my pete and same greenish color liquid. Valiendo madres ..

[@alexblackwood8465]

Good video wish it was longer

[@TATEXPRESSINC]

Thanks, Alex. Be sure to subscribe for more content. 🔧💪🏼

[@Jerzeyguy]

Don’t forget the trans coolers. I had them go bad dumping coolant in the trans.

[@fst209]

Very good I love it

[@chichoc97]

Thank you you the best.

[@rmb779]

Thanks for.this informative video

[@carlosflores9882]

Nice video 👍🏼

[@ramongomez1477]

Thanks for the information have same problems on kenworth. 2015. Paccar engine

[@lilnicky181]

Did you ever diagnose the problem. Have same issues??

[@jasonwillis994]

Awesome Adam...

[@TATEXPRESSINC]

Appreciate the support Jason.

[@jasonwillis994]

Your welcome

[@2WheelsSometimes1]

Do you know if you can get the abuse history through a PDI or Bosch unit? For anyone in the future looking to buy a rig with a Cummins ISX15/X15 to be able to check stuff like this before they make that big commitment. Thanks for showing the test, first time I've seen that. And the test strips idea is really smart, a simple and cheap test you can do yourself.

[@jcslotsandjets1816]

Glad I saw this so a simple head gasket after a overheat is not recommended correct?

[@billarroo1]

Good job, 😃😃😃 Thanks

[@mukhtarchik]

Great video! Have same problem, one shop checked combustion gases test on it but they said there is not anything wrong, but it is kinda still leaking through the reservoir cap

[@Jordan-ym5gf]

It's kind of a hit or miss teat.

[@ThaSouthMU]

Good info

[@awchannel2216]

Good informaton.. Nice vidio 👍👍👍👍

[@TATEXPRESSINC]

Appreciate the support

[@CarlosDominguez-ti4to]

Good video thank

[@davidreynoso4637]

Hey brother awesome video So to make sure, an order to check for gas combustion I have to disconnect the egr

[@quocbinhduongnt8646]

clip này hay lắm anh ơi

[@TATEXPRESSINC]

Cảm ơn bạn đã hỗ trợ

[@lucylia8444]

Thanks for a great video, I've learnt so much in a few minutes. Currently having this problem but mechanic won't take it seriously.

[@chrisayala3620]

Same here

[@gavikpt1]

Have the same problem going on and the mechanic going to change the injector cups. Does it going to solve the problem? Please help 🙏🏻

[@leanonme1065]

Can we have update with your engine

[@leanonme1065]

​@gavikpt1 can we have the update with your engine please

[@truckingjamaicans5045]

Love the videos

[@TATEXPRESSINC]

We are glad you enjoy them 🔧👊🏼🚚

[@truckingjamaicans5045]

@@TATEXPRESSINC hope to see more on series 60 14l

[@TATEXPRESSINC]

We will have more coming your way. 🔧💪🏼🎥🚚

[@leanonme1065]

​@@TATEXPRESSINC I have same problem. No coolant leak but I have to add coolant every day, and I only see the STOP ENGINE light when I stop or idle but when I'm driving the light disappear. Any idea?

[@bigcuz8356]

New Subscriber....think I need a new mechanic behind just watching this...just bought a 2011 peterbilt with Cummins isx...rear & front seal leak & the same coolant issue...not losing a lot but enough for the low coolant light to come on...but overflow stays nearly full...truck isnt running hot...dash reads "NO WARNINGS"...remarkable oil pressure is balanced..but does have leak...bought at cheap price...less than 15...but mechanic diagnoses was truck would need a complete overhaul because of the coolant issue...I wish you'll establishment was closer for better 2nd opinion...I just wanted the seals replaced & find the coolant leak....I can only afford so much...

[@az5610]

we do need you BOY

[@gilbertmendez1991]

I have no coolant in oil. Air compressor line don’t have any wet spots. No coolant leak under truck anywhere. When truck is idling it’s good but when on the road the coolant drains. Coolant is going somewhere else what else could it be? Gasket?

[@nahomte2732]

Hi,thanks for the helpful video always.i have 2013 volvo d13. My problem is temperature going up all the way to 205 after I stop driving,traffic areas,and hills.and never go back to 170 unless I turn on the AC period.and when I open hood see if the fun working if I on the ac yes if not!! I change thermostat, fun selinoid,temperature coolant sensor.fan clutch is good.any aida what can be

[@mikhailnozdrin4904]

I would love to stop by your shop and have you guys take a look at mine isx

[@jhonnybrotherwrenchrepair8152]

Nice imfo

[@Spankytrucker69]

Thanks for the video👍I bet its the liners sinking. If you shim it up you should still get a 100k without pulling the block.

[@morenogalan1375]

Very good information, I think my egr cooler is leaking because I put 1 galon every week. Thanks

[@TATEXPRESSINC]

You should inspect, the EGR cooler can be pressure tested.

[@scottbee2217]

Would a leak from a hose cause the same issue? Like sucking down and returning after cooling down

[@syedsalmanshah3432]

Hey man I love your videos but now at this point I need your help my truck was at cummins for the extended warranty evaluation inspection and they found The front gear housing gasket has an oil leak that is classified as a class 3 leak, meaning oil is running down the housing, also the coolant filter is leaking coolant. now you know if I get that fixed by dealer it would cost me $$$ I live in texas Dallas 1st time truck owner and very confused about the situation please advise me thank you

[@DTUFINOPhotography]

I had sorta the same issue on my 2010 FX35... but when i drive all the coolant ended up in the expansion tank and out of the radiator... so often i had to siphon it back into the radiator. I didnt have any weird lights but if i continute to drive all the coolant will be in the expansion tank and myc ar will overheat.... after change so much i finally took it my mechanic where they found i had a warped head... changed headgaskets, timing chain, water pump, galley gaskets and all... all seems to have resolved the issue for now.... i'm still getting the air out the system after 195 miles driven.

[@coarsegrind]

We had an isx blowing coolant out and the owner immediately said the head is warped and to take it off. While doing the strip down we found every lash setting to be tight. Zero lash on both intake and exhaust. I wanted to do the overhead set but owner insisted on replacement.

[@rodneybelt7962]

On a on X-15 do you have to replace the tone wheel if you take it apart

[@2kpapii]

I am a Cummins technician who just recently start working on cumins. How do I look up the abuse history? Is it on insite

[@orlandoflorez1686]

I have that problem now

[@satpalsidhu1236]

👍👍👍

[@scottellis8964]

I’m having high coolant psi and takes more than 2 mins to build primary air on idle . I’m also having oil n water coming out of secondary air tank on driver side . Would this be an indication of compressor bad ?

[@eugeniujosanu279]

My friends truck head block was told and need to be replaced because one of the injector stoped working. I understand if the injectors stays open, it will damage and scarf the walls of the cylinder, his case it was closed dead (no contamination with oil). Did he replaced the head for no reason since piston /wall/ring is lubricated with oil. ? Ther wasn't don any compression to the cylinder before head replacement. (Sorry for my engl.)

[@tommyreed4220]

I’ve had these same problems with mine

[@TATEXPRESSINC]

Thanks for sharing your experience. Be sure to hit the sub button

[@hirpm8564]

DD15 is they only engine i trust now days.

[@blainegober2905]

my 2015 cummins isx15 engine through a rod at 283k miles with no alerts on the dash at all and oil pressure read normal until i suddenly lost power on the highway...anyway now cummins is asking me why i ran the motor at 2750 rpm's for 30 seconds according to ecm ....of course my response was...i didnt the gauge only goes to 2500 rpm's and also the motor has a rev limiter...my question is....is it possible to run that motor at those rpm's?

[@hollandcustomwoodworking5932]

What would cause coolant to leak from the muffler? The exhaust dumps under the truck and the coolant gets low within a day. I parked the truck after noticing white exhaust and coolant dripping out of the muffler.

[@georgecummaro2677]

have you ever heard of keeping the coolant reservoir tank empty? We have a brand new truck and have had numerous low coolant alarms

[@fernandomenjivar2418]

Could a bad air compressor give high air pressure around 140 psi and at the same time high coolant pressure or do I have 2 different problems? 2015 dd15 help please

[@sonxairasakhamdee2178]

Subscribe!! Straight knowledge!! 👍🏼 Stay safe and god bless 🙏🏼

[@TATEXPRESSINC]

We are glad to share and happy to help. Contact us with any issue. [e-mail]

[@TATEXPRESSINC]

Thanks for the sub

[@fcoanaya5762]

Good videos, I have a 450 ISX and when I was pulling a load I heard a big noise and truck started shaking, and I noticed I lost almost all my coolant and oil level raise like almost 3 times on the stick but is not mixed with coolant. Egr connections look clean, engine didn’t got hot or give low coolant warning. This happened yesterday had to towed trick to the yard. I will appreciate any recommendations

[@fcoanaya5762]

@Mark McCauley thank you for you reply and advise. truck already at the shop..

[@jjteam8991]

I have a 2016 isx 12 on a cascadia. How good is that engine ?

[@fcoanaya5762]

@@jjteam8991 my first truck was a Peterbuilt 2007 has Isx and I put 1800000 on it. Now on this 2015 Cascadia I have 450 ISX 800.000 miles on it so far so good.. only oil changes

[@scottbee2217]

Like I have the same issue but do also have a minor leak that only leaks while truck is running

[@edenfieldjared0]

if you fail the bubble test and take off the compressor discharge line and it does not reduce bubbles could compressor head still be bad?

[@sukhjaud]

My isx15 burning coolant I'm adding up half or more then half gallon of coolant in after 10days.now i noticed on oil pouring cap i see some green fungus type thing

[@johnvrbka570]

Forgot to mention checking the radiator cap. Even if its not mounted on the radiator but a coolant tank. Since caps are pressure releaf valves and need to maintain a certain amount of pressure to the system to lower boiling point since every pound of pressure raises boiling point like 3 or 4 lbs. If the cap doesn't hold pressure due to a bad seal then the coolant can boil out slowly. I don't work on big trucks but in the automotive business & I would say 70% of the caps I test fail

[@TATEXPRESSINC]

John, thanks for sharing your experience. We appreciate the support. Be sure to hit the sub button.

[@omarbeltran8578]

How about coolant in the fuel in the isx15 with blow by and pressure in the reservoir?

[@gregoryrobinson1004]

Brandnew 579 x15 a gallon a month . No leaks going somewhere. Truck has 31k on it i got it at 957 miles

[@GT20232]

Is it normal for coolant to go into the left side of the reservoir? Mechanics just replaced the head on my compressor and told me it was normal to see that

[@DeLonghe_P_Ness]

330°?! Man, that head has been cooked...sautéed & deep fried!😂😂😂

[@TATEXPRESSINC]

Yes, 330 is extremely hot. 🔥🔥

[@jddees24]

@@TATEXPRESSINC Whats HOT ON A DD15

[@scottbee2217]

@@TATEXPRESSINC would a leak from a hose cause the same issue? Like it sucks down while running then returns to reservoir. But I do have a line that only leaks while truck is running.

[@wojciechzgodowski]

Question:. I had front engine cover gaskets replaced, valves adjusted, rear engine seal replaced. I was basically leaking half a gallon of oil daily from front and rear. I never had any antifreeze preassure even when the engine was hot. Durning driving even on heavy loads on flat surface my antifreeze temperature usually stayed at around 180 even at idle. My oil temperature was usually at 200-210 regardless if on idle or driving. Now after the repair at idle or driving antifreeze temperature is at 200+-. Oil temperature at idle is 220. When driving under a 44k lbs load my oil temperature reaches close to 240 at times close to red line that's at 250. Antifreeze temperature stays at 200 and fan kicks in at 210-212F. And now when engine is hot I'm getting preassure in antifreeze rasivour which I never did. Before the oil leak repairs engine was hot I would open the antifreeze rasivour and I would never hear feal any preassure. What do you think the Russian mechanics messed up on the engine?

[@McCalifornia]

Stop hauling heavy loads I suggest first.Why haul 44k when you can haul 24k for more money and less pressure on truck

[@tupapisoyyo676]

What about if its leaking from the cap but not overheating engine?

[@rickyd3787]

Do the gas check

[@shawnferguson4682]

My n14 is building up pressure to the reservoir any ideas??

[@drjay4915]

i thought that test fluid turns yellow if combustion gas present ?

[@miltonsmith659]

I need help. My coolant level is low every other day. When I take the cap off the coolant level rises a bit. At one point it was blowing out under the truck. That has stopped but now it whistling very loud. Can you help????

[@roz4747]

New sub, Hey I’m looking an ISX in a 2012 or so Volvo, they put a new radiator when I looked at it we ran it for about 15 to 20 minutes drove it around sounded great. shut the truck off, the coolant reservoir was either boiling or air was steadily being introduced even like five minutes after the engine was off????

[@gavikpt1]

What was the issue? Thanks

[@roz4747]

@@gavikpt1 it was the air compressor gone bad. Still $2500 from the thieves/shop

[@gavikpt1]

@@roz4747 that’s so bad. I had the same issue but after replacing injector cups problem gone now

[@roz4747]

@@gavikpt1 what was the bill for that job?

[@gavikpt1]

@@roz4747 around $1500 parts and labour

[@anthonybarksdale350]

I had pressure in my coolant and after running for 4 hours I was told it was my over flow reservoir cap. Then when I would get a load the pressure would spit out coolant through my hoses and split my passenger side top hose. So I ask them to change egr cooler and they found a crack in my head. My cam was damaged and rollers needed replacing.

[@TATEXPRESSINC]

Thanks for sharing your experience. A combustion gas test could of indicated an issue before hand.

[@thomasdale1439]

My truck is pushing the coolant out of the pressure cap on side of surge tank. But only occasionally

[@arielaquino7242]

Cap replacement? Sorry not sure what your referring in that last part. Im having that same problem. Chaged the egr but still havent a coolant pressure issue. What cap are you reffering to? 🤔

[@gavikpt1]

Did you fix the problem sir?

[@user-bk7wu1eb4w]

Hey we have a problem on 1 of our trucks. There is like a white foam coming out of the water reservoir is a 2015 Cummins Any clues ?

[@anthonymccullum2849]

I use a gallon a day of antifreeze. Replaced radiator, Reservoir and seals on the water pump. Still the same problem

[@TATEXPRESSINC]

Have you checked the other items in video?

[@thomasems91]

I put a new resavor tank with new sensor and the buzzer keeps going off gets low then builds back up and then gets low again I thought maybe it has air bubbles in the tank uses about a half gallon a week

[@mariogutierrez9949]

I have the same Problem with an ISX, the Head is Brand New though. Reservoir cap is New, when I fill up Reservoir to ( cold Full) after running the truck for a while specially on an Uphill it throws it out through the Breather hose on the Reservoir.

[@michaelwright1602]

More than likely you wasted that money on a new head, odds are a cylinder liner has broken loose and taken out your fresh new head. To see if this is your issue, drop the oil pane, pressurize the coolant system to 20 psi and let her sit overnight. Now, have someone get under the motor with a good flashlight while one of you bars the motor over by hand. If it is a slipped liner, you should be able to hear coolant gurgling in the head and will find traces of coolant on the cylinder wall, normally #5 or #4. Always do this test before removing the head, as these Cummins heads are pretty much one time use, and never use a remanufactured head, always new OEM.

[@tamipotirala6973]

Could be the air conpressor

[@osoprizzell7322]

Man my coolant tank just oh so gently drops to min after about 250 miles but when I bought the truck there wasn’t a clear hose on the other side of coolant tank where it says don’t take off 15psi and the truck runs right at 175-195° But leaves coolant here and there I’m new truckin owning my own

[@cztrucking1559]

I have the isx 15. I’m losing coolant. But still trying to determine where. It’s going from cold max to cold min in about 16k miles. Talking with kenworth, I have no signs of a head gasket. No pressure in the coolant system. No cross between engine oil and coolant. Both look clean. No coolant coming out of the vent cap. No bubbles percolating in the reservoir. With a pressure tester it goes from 15psi to 0 in less than 10 minutes. Kenworth told me to check my fuel and transmission. (13 speed manual with heat exchanger) can’t see coolant in the fuel or water separates. I changed the transmission oil and sending it out for a oil analysis to see if coolant is mixing in it. I’ve taken the hose off the exit side of the egr cooler and looked good and felt dry. At this point I’m hoping it’s the heat exchanger on the transmission. It’s the cheapest fix. Other than that the truck runs like a champ and no loss of power

[@TATEXPRESSINC]

Have you tried pressurizing coolant system to find leak? If you suspect heat exchanger, remove oil fill plug to see if over filled

[@cztrucking1559]

TAT Express Inc. I did that over the weekend. Ended up draining the transmission. I bag some of it so I could send out for oil analysis. The oil looked like crap and I was 99% sure it was bad from coolant. But had no time and had to get back on the road. Well today it failed. Seen oil in my reservoir. So luckily I just got loaded and was close to home. I was heading for Washington. I went under and pulled to fill plug and oil looked like a milkshake. So picked up a new heat exchanger and came home. When I pulled the drain plug, coolant came out first then the milkshake came out. So flushing everything out tonight and back on the road in the morning.

[@michaelwright1602]

@@cztrucking1559 Get rid of that coolant heat exchanger and install an air cooler. They are cheap and you will no longer have these issues.

[@cztrucking1559]

@@michaelwright1602 if I had more time I would. But it was already late in the day and trailer was loaded. If I wasn’t on the road by next morning, the load would have to sit on my trailer all weekend. Luckily I was close to a kenworth dealer who had the heat exchanger and was about an hour from home. Son grabbed the part and hauled ass home and swapped it out which was a quick job. Flushing the cooling system took all night but I got back on the road and made my delivery in time to get reloaded on a Friday and make it home for the weekend

[@abdiqaniadan2349]

What is the symptoms that you have overflow problems

[@michaelwright1602]

I would drop the pan first, bar the motor and look for coolant in the liners, or cylinders. Odds are a liner has fretted, and taken out the head, save the customer some money with this test first. And folks these heads are one time use, do not install a reman head either, only a new OEM head should be used. And this horse has been beaten to death, only a new OEM head. If the liner is fretted, the motor will need to be rebuilt, cylinder/liner ledges cut and liners shimmed to .0014 of an inch. And do not simply replace the one affected liner, you are just throwing money away... And why do these liners fret so often in these ISX motors? It is due to the driver pounding the crap out of them lugging the motor while under a load. An ISX motor is designed to run at high RPM's, above 1500. They are safe to run up to 1900 without issues. When you lug the motor, due to the design of the block, the excess pressure from the torque of the motor is transferred to the piston liner, and eventually they bust loose. Do not lug these motors.

[@phayakoot1]

My EGDR cooler leak then I use Bar leak then every thing are OK. No leak

[@jaydoe5654]

I drive a 2013 kenworth t800, ISX hydrovac truck but don't own it or decide when it gets maintenance... I can turn the truck off Friday afternoon and on monday morning the coolant reservoir will still be holding pressure. Quite a lot of coolant comes out of the overflow throughout the day. Like maybe 1L or more. Anyone have any idea where to start? To get this fixed I need to be able to point the money in the right direction. Right now buying cases of coolant is the fix they are happy with, but I feel like were killing this awesome truck...

[@sylvesterwilliams8080]

My x15 Cummins engine is pushing the coolant out of the reservoir I changed the reservoir on it I don’t know the history.the dash says 500+k miles on it,who knows the miles could’ve been rolled over on the truck the truck it self doesn’t over heat could it be bad head gaskets???