Brad Carpenter

got it thanks for the info guess we will just have to get the system back on and healthy

yes im hoping so too..wondering though if you or anyone on here might know if we can eliminate the egr cooler? were in Phoenix AZ so we dont have emission testing on this truck we bought it used out of california and the boss wanted to know if we could delete the egr system

Yes the oil level was dropping and we do have the Bendix compressor. We did also have coolant pushing out of the overflow tank

were pulling the engine apart now so far we have coolant in the air intake horn on the EGR tube but no coolant on the other side of the EGR cooler plus coolant in the oil??? Gonna pull the heads and check for cracks? or gasket?...Im confused as heck right now

Im thinking a head gasket or cracked head. 04 427 ASET engine. I have coolant standing in the air intake tube and a little in the oil (milky), also crystalized coolant in the air horn where the line connects from the EGR cooler. The truck has been smoking heavily sometimes grey sometimes white for a couple months now smoking would come and go truck would also randomly shut down but no codes, when it would shut down or stumble it acted like it was running out of fuel but throughout we never saw any contamination in the oil and no signs of it in the intake we did however get heavy oil in the exhaust so we did a turbo but now it runs really rough and smoking is continuous. Anybody have any thoughts??

Hi all we have 4 2014 Gu713 all 4 have active codes for air fuel solenoid stuck closed. All 4 have new solenoids in them and new air regulators but yet the codes remain. Not sure what else to check or do kinda stumped right now...any help would be greatly appreciated

If im not mistaken there should be a rubber stop on the upper frame work in the cab under the dash that the clutch pedal hits, sounds like it may be missing

I cant see that fuel pressure

It wont get above 600

Hi all I am stuck here hoping someone can help. I have a 2015 CXU613T with and MP8. I replaced the DPF filter with a new one had the DOC cleaned by our local Mack dealer. I installed a new AFT2 injector (it was leaking) and I have the Mack software in my pro link ultra. Im trying to reset the soot level and it says completed but still shows level at 132 percent? So the truck keeps calling for a parked regen I have let it do it several times as well as did a manual with pro link but nothing changes. When looking at the data I have 0.00 inlet pressure on DPF and 95.00 on outlet? I thought bad delta snsor and replaced it also blew shop air through tubelines and they are clear. But with new delta sensor numbers dont change. The truck also shows 0.00 ppm on NoX inlket and outlet on bank 1 and bank 2. I went ahead and replaced both NoX sensors and nothing has changed. The exhaust flow at the diffuser tip is strong and the engine runs excellent. Im sure that I dont have an exhaust restriction. Im at the point of sending it to our Mack dealer but wanted to see if anybody can shed some light on this for me, maybe im missing something?? Thanks Brad

i found it its on the left side of the steering column way up high under the dash right next to the steering shaft.

Does anybody know where the diagnostic port is located on a 1999 RD688S? Silly question i know but i cant find it??

i believe it does but this one just started beeping with the signal or hazards as soon as you turn it on?

im stumped, have a 1999 RD688S, all of a sudden when the signals are on the air buzzer beeps each time the signals flash have no idea why this would happen any help is greatly appreciated

ok that does make sense. My engine has the power leash exhaust brake and on the inboard exhaust valves there is a pin and a cup that goes in the bridge, does the cup go over the valve stem or does it go over the pin that goes through the exhaust bridge?