Dakker Posted January 21, 2023 Share Posted January 21, 2023 I have a 2007 CHN613 with a 427 ASET, I believe anyways.. The truck is relatively new to me, so I'm still trying to come up to speed on some of the nomenclature. Is this motor an E-7? Or was that earlier versions only? I've been running this truck cross country for about 10k miles now. I have had this issue where the coolant was blowing out the overflow reservoir. The cooling system builds too much pressure and the cap opens and it will overfill the reservoir and continue to do so spilling coolant all over. I have been trying to resolve where this over pressurizing of my cooling system is coming from. No luck trying to sort through that yet. Yesterday, the truck started running rough. Not bad, and it tends to run smoother at higher RPM. I noticed today oil seeping from the exhaust manifold/turbo area. The side of the block looks like its starting to get wet. There is oil in the exhaust. I do notice a tiny bit of smoke at start up, but it tends to clear up as the engine comes up to operating temp. Over the last couple days noticed some codes popping up and then disappearing. Some EUP codes.. 8-3, 8-4. Currently only code I'm able to pull is 9-5, however, I've seen everything from 1-7 (to be expected), 2-8, and 10-1. This 9-5 code goes inactive if I raise the RPM to above 1300. Comes back as the engine slows back down. I don't believe it is an EGR Cooler, as in my experiences, EGR cooler's tend to run at lower PSI than the cooling system, causing the coolant to go into the exhaust, vs the exhaust going into the cooling system, but I won't say it's not possible. But that doesn't explain the oil in the exhaust, the EGR valve could explain that though. Or could my issues be something bigger? And if so, what's the best way to go about trying to diagnose? This truck does not run hot, both the water and the oil temp lead me to think it actually runs on the cooler side. Running down the highway pulling an empty 10k lb. trailer, she'll run at a cool 175. Too cool? Loaded, pulling weight/grade barely breaks 200, and that's under extreme load. Less weight/grade and it creeps up to just shy of the 200 mark and holds steady. I can't think of any other symptoms at the moment. Does this lead some of you experts on this motor to a potential cause? Please help, I am getting desperate and not confident in today's R&R till it's fixed mechanics that tend to be everywhere. Much appreciated for any help/advice you all can give. Quote Link to comment Share on other sites More sharing options...
fjh Posted January 21, 2023 Share Posted January 21, 2023 I feel you should check the EGR pipe for dampness Reguardless of what you assume ! These coolers do fail ! 1 Quote Link to comment Share on other sites More sharing options...
Mackpro Posted January 21, 2023 Share Posted January 21, 2023 The radiator pressure cap should be a 16 pound cap. Some people put a 10 pound cap on them and cause them to open to soon and push coolant. The ASET AC engine you have uses the 16 pound. The ASET AI and all other Mack engines ( gray engine) use a 10 pound cap. Lots and lots of bulletins on coolant push with your ASET AC engine out there . I was a Tech and Warranty Administrator at a dealership, we averaged about 250 warranty claims a year , in 2004 when the ASET engines came out our warranty claims jumped to almost 700 a year. Lots of updates came out and by mid 2006 and 2007 the failures dropped as updates were installed at the factory and existing truck were updated. Updates included new thermostats ( one opens at 180 the other at 185), new thermostat housing and piping. One piece aluminum expansion tank and better service procedures to test and correct on going issues 1 Quote Link to comment Share on other sites More sharing options...
Mackpro Posted January 21, 2023 Share Posted January 21, 2023 https://f01.justanswer.com/HeavyEquipmentTech/9c63171c-1162-4f60-93c3-75b9bbaba99c_Mack+surge+tank+update+sb232026.pdf one piece surge tank bulletin 1 1 Quote Link to comment Share on other sites More sharing options...
Mackpro Posted January 21, 2023 Share Posted January 21, 2023 https://f01.justanswer.com/HeavyEquipmentTech/6bc71206-6fd3-4357-bdfd-e51101cf15ec_Mack+cooling+system+revisions+SB215025.pdf Thermostat housing update 1 1 Quote Link to comment Share on other sites More sharing options...
Mackpro Posted January 21, 2023 Share Posted January 21, 2023 http://www.engineprofessional.com/TB/TB011816-1.pdf One one cause of ASET AC EGR cooler failures is this screen getting clogged and blocking coolant to EGR cooler causing it to overheat and crack 1 1 Quote Link to comment Share on other sites More sharing options...
Mackpro Posted January 21, 2023 Share Posted January 21, 2023 Amazon has the 180 and 185 thermostat kit from PAI . Mack found that when both thermostats opened at the same time it could cause a coolant push problem. So they recommended the staggered opening temps 2 Quote Link to comment Share on other sites More sharing options...
Mackpro Posted January 21, 2023 Share Posted January 21, 2023 https://www.bigmacktrucks.com/topic/34802-04-vision-coolant-push/ Also this old thread has some more bulletins for this issue. 1 Quote Link to comment Share on other sites More sharing options...
Onyx610 Posted January 21, 2023 Share Posted January 21, 2023 Those two piece tanks are stupid! There was “Volvo” parts and ideas on these trucks before Volvo also FJH! Haha 1 Quote Link to comment Share on other sites More sharing options...
Onyx610 Posted January 21, 2023 Share Posted January 21, 2023 Well I guess I should say before Volvo really started to get their hands on it. Quote Link to comment Share on other sites More sharing options...
fjh Posted January 21, 2023 Share Posted January 21, 2023 😁 28 minutes ago, Onyx610 said: Those two piece tanks are stupid! There was “Volvo” parts and ideas on these trucks before Volvo also FJH! Haha That aluminum tank May or May not be a Volvo trash idea! Volvo had there own problems with the current setup! Just Sayin!🤣 😁 1 Quote Link to comment Share on other sites More sharing options...
Dakker Posted January 22, 2023 Author Share Posted January 22, 2023 Quick update and a few pictures.. The cylinder head is dry below the valve cover, and all wet with oil below the exhaust manifold. And all of this appears to only be on the rear bank. There is oil in the exhaust and I am wondering if that oil coming from the turbo is just a result of the oil going through the entire exhaust system, presumably from the combustion chamber. Just speculation at this point from what I am seeing. Rough running, over pressurizing of the cooling system, oil in the exhaust. I'm still going to try and tear into it, just got it home. Buried in snow and 20 degree temps through. Want to pull the pipe between the cooler and the intake and check like FJH recommended, Thinking about pulling the turbo off and confirming that the inside of the exhaust manifold is oil soaked as well. If it were the turbo leaking the oil, the manifold should be dry, no? I'll post more pics and what I find when I get into it. Not sure exactly when that will be just yet. Quote Link to comment Share on other sites More sharing options...
mrsmackpaul Posted January 22, 2023 Share Posted January 22, 2023 The oil is on the outside, wouldn't that mean it isnt coming from in the exhaust ? Unless the exhaust had a bad leak, but if it did the soot from the exhaust would be evident, and I can't see any Reckon the motor has a oil leak some were and thats were the oil is dripping or getting blown to Paul Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted January 22, 2023 Share Posted January 22, 2023 Looks like she pushing oil into the cylinders.. Not good.. Pull the exh. manifold off, and I bet you have some wet ports.. Quote Link to comment Share on other sites More sharing options...
Dakker Posted January 22, 2023 Author Share Posted January 22, 2023 Joey, if that is the case, is it just a head gasket? Or could it be a liner? or maybe even both? All of this started with just the over pressurizing of the cooling system, the oil, is a newer symptom. The rough running came with the oil discovery. Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted January 22, 2023 Share Posted January 22, 2023 It shouldnt be a head gasket, because of the fire rings. If a fire ring was left out it would have blown out the gasket on that cylinder. It can be, worn valve guides, bad piston ring(s), a cracked head, possibly.. I just looked at the pics again..I dont mean any disrepect, but it looks awfully dirty and rusty to have the heads off of it, and if the manifolds were left on the heads and pulled as a whole unit. I would expect the mechanic to break it down on the bench to clean and re-gasket it.. The ASET-C is not an engne to cut time and corners on...I am also concerned about proper valve adjustment.. That is also VERY specific... Sorry sir.. With respect, Jojo 1 Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted January 22, 2023 Share Posted January 22, 2023 I hope my last post isnt a rude one.. I just know those engines really well, and my distain for them is where my opinions come from.. jojo Quote Link to comment Share on other sites More sharing options...
Dakker Posted January 22, 2023 Author Share Posted January 22, 2023 Not sure if I said something that led you to believe that the heads have been off, they have not. The overhead was supposedly just done recently. The jake on that back bank quit working shortly there after. Had a shop in sioux falls put a new jake solenoid in and repair the wiring to it. So the valve covers have been off, but not the heads. Quote Link to comment Share on other sites More sharing options...
Dakker Posted January 22, 2023 Author Share Posted January 22, 2023 No offense taken Joey, you are good. Is it possible the dealer that did my overhead caused this issue? Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted January 22, 2023 Share Posted January 22, 2023 I just went back over it... I am sorry.. I thought i saw that head gaskets were done.. However my thoughts on the rest are the same.. Forgive me... Jojo Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted January 22, 2023 Share Posted January 22, 2023 Running the overhead on this engine has to be followed by the book!! If it is done incorrectly, several issues WILL occur.. One being that the ceramic lifters will crack and cause major issues.. I wish I was there to inspect it, and possibly hear it run.. Quote Link to comment Share on other sites More sharing options...
Dakker Posted January 22, 2023 Author Share Posted January 22, 2023 It has developed a louder than normal, in my opinion, valve train noise. It seems to come and go. Sometimes she purrs, sometimes it sounds bad. If the dealer that did my overhead screwed up, is there any way to know for sure? I've been having issues with them since I got my truck back. They were supposed to go through it and do a bunch of little repairs. They had my truck for over 2 months. And when I got it back, it wasn't greased, at all. (PM service was done). A part to fix my A/C was supposedly ordered overnight but took almost a month to get there. Even though I was told it was in stock. I finally picked up my truck without that part and have since tried to get them to refund me the $400 for it to no avail. I don't have much confidence in them. I'd really like to hear more about what can and WILL happen if that was not done correctly.. Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted January 22, 2023 Share Posted January 22, 2023 I guess, my question to you is.... Do you have a good mechanic's background? For one of us to give the run down on procedures would be extensive here.. If you want to P.M. me with your cell number. I can try to call you tomorrow and try to answer some questions.. Jojo Quote Link to comment Share on other sites More sharing options...
Mark T Posted January 22, 2023 Share Posted January 22, 2023 I had one of these that acted similar. Engine had worn rings. Loaded the EGR cooler with oily gook and restricted it's flow. These things are filthy cause of the EGR. I cleaned it all out and avoided any kind of idling. That one is still running, guy uses it as a extra truck. I'd pressure test the cap (like mentioned earlier) they do go bad and faster than you might think. How they could ruin anything as nice as an E Tech still makes me wonder. 1 Quote Link to comment Share on other sites More sharing options...
fjh Posted January 23, 2023 Share Posted January 23, 2023 20 hours ago, Dakker said: Quick update and a few pictures.. The cylinder head is dry below the valve cover, and all wet with oil below the exhaust manifold. And all of this appears to only be on the rear bank. There is oil in the exhaust and I am wondering if that oil coming from the turbo is just a result of the oil going through the entire exhaust system, presumably from the combustion chamber. Just speculation at this point from what I am seeing. Rough running, over pressurizing of the cooling system, oil in the exhaust. I'm still going to try and tear into it, just got it home. Buried in snow and 20 degree temps through. Want to pull the pipe between the cooler and the intake and check like FJH recommended, Thinking about pulling the turbo off and confirming that the inside of the exhaust manifold is oil soaked as well. If it were the turbo leaking the oil, the manifold should be dry, no? I'll post more pics and what I find when I get into it. Not sure exactly when that will be just yet. Bro the oil/ coolant will be coming from the exhaust or the turbo! the other check is the turbo its self remove the inlet elbow and look inside! In my mind we can't ignore the coolant push totally! EGR cooler! We asume it is oil we see How ever is it? Quote Link to comment Share on other sites More sharing options...
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