Aside from the recurring sticking rear caliper issue another recurring problem seems to have surfaced...Back in May I did a day trip where I drove about 900km in a day with mostly highway driving at 90-100km/hr. The highway had some mountain passes, so I slowed down for those. I am running higher boost with a max of about 17-18lbs and I have a post turbo EGT gauge that I keep the readings under 800 F and try to hold a steady max of 750 F or less when the temps get high.
After about 800km the temp started to rise on the temp gauge (stock coolant gauge). It didn't get into the red, but it probably got to about 3/4. I pulled over at the first gas station, and I found that the coolant tank looked like it was bubbling, so I let the truck cool down and then emptied the expansion bottle in the rad and topped up the system. I probably had to add less than a liter of fluid.
I have driven about 4,000km since and I haven't had any issue until this past weekend. I've checked the system periodically, and I haven't had to add any additional coolant to the system. This past weekend I was again on a longer trip, but this time there were more passes and I noticed the temp needle just starting to rise after about 500km, so I stopped at the next available location. Similar to the last time I only had to add less than a liter of coolant and I was on my way.
Coming home I was running the A/C and I noticed it wasn't as cool. I didn't think much of it as none of my temps or temp gauges seemed out of place. I stopped and checked the coolant and it had again come out of the expansion tank. Topped up the coolant and the A/C was back to being nice and cold again. The rest of the trip the A/C was good and the temp gauge didn't rise or anything, but when I stopped at the end coolant had again come out the expansion tank and it was full.
Ok, so now I might looks stupid for doing the same thing over and over again, but I don't seem to be overheating too much, but it's definitely running hot and coolant is being pushed out of the rad into the expansion tank.
I've checked cold, warm and hot and there are no bubbles coming up in the rad with the rad cap off. I don't see any evidence of coolant and oil mixing (I just changed my oil and it was just the usual black). Anyone have any thoughts or suggestions? I'm probably just going to take it to the shop and get them to look at it, but I'm wondering what I'm in for. I'd think with a cracked head or BHG I would see bubbles coming up in the rad, but I don't know for sure. It just seems odd that the only coolant loss I seem to be getting is from coolant being pushed out the rad and out of the expansion tank.
Thanks in advance all!
After about 800km the temp started to rise on the temp gauge (stock coolant gauge). It didn't get into the red, but it probably got to about 3/4. I pulled over at the first gas station, and I found that the coolant tank looked like it was bubbling, so I let the truck cool down and then emptied the expansion bottle in the rad and topped up the system. I probably had to add less than a liter of fluid.
I have driven about 4,000km since and I haven't had any issue until this past weekend. I've checked the system periodically, and I haven't had to add any additional coolant to the system. This past weekend I was again on a longer trip, but this time there were more passes and I noticed the temp needle just starting to rise after about 500km, so I stopped at the next available location. Similar to the last time I only had to add less than a liter of coolant and I was on my way.
Coming home I was running the A/C and I noticed it wasn't as cool. I didn't think much of it as none of my temps or temp gauges seemed out of place. I stopped and checked the coolant and it had again come out of the expansion tank. Topped up the coolant and the A/C was back to being nice and cold again. The rest of the trip the A/C was good and the temp gauge didn't rise or anything, but when I stopped at the end coolant had again come out the expansion tank and it was full.
Ok, so now I might looks stupid for doing the same thing over and over again, but I don't seem to be overheating too much, but it's definitely running hot and coolant is being pushed out of the rad into the expansion tank.
I've checked cold, warm and hot and there are no bubbles coming up in the rad with the rad cap off. I don't see any evidence of coolant and oil mixing (I just changed my oil and it was just the usual black). Anyone have any thoughts or suggestions? I'm probably just going to take it to the shop and get them to look at it, but I'm wondering what I'm in for. I'd think with a cracked head or BHG I would see bubbles coming up in the rad, but I don't know for sure. It just seems odd that the only coolant loss I seem to be getting is from coolant being pushed out the rad and out of the expansion tank.
Thanks in advance all!