I spun my harmonic balancer and went back with a SoCal Super Damp and ever since then I have had pressure on my coolant system and low coolant light would come on. I can leave it over night and the pressure drains off somehow and the coolant level rises back up to where it belongs. It was smoking at idle at stop lights so I took it to Ed Wayne and he found that my injector job on my 02 LB7 was really screwed up. When he took the injectors out the cups were faulty. We sent the injectors off to exergy and got them balanced and a couple of new nozzles. We thought for sure that was were i was getting my pressure so we fixed it and put it back together. Smoke was gone and ran a lot smoother but i still am getting pressure in my coolant. I got my system flushed and that had no affect on my pressure. It has been like this for twelve months now and has never overheated and runs like a top. If i disconnected the low coolant sensor i would never know that she had any problems. ANYONE have any type of idea what is causing this?!?! I hope its not headgaskets and i feel it would have gotten worse by now. Please anyone let me know what to try next!!!
Mine does the same stuff. Alot of pressure in my upper pipe and it blows coolant out the resinous but never overhears. Low coolant light always on. No white smoke though and it holds the pressure in the upper pipe.
