RE: High pitch sound what is that...???
I checked everything. no leaks in the fuel line or the pressure line. I am perfectly tuned up the truck was running perfectly until a certain point. Now here is a new thing. I brought the truck in and i dont know why it occured to me to check the cooling head. i started taking the screws off and i noticed that the screws were very loose. the cooling head wasn't moving or anything but the screws were very loose. I disassembled it, cleaned it and reinstalled it and i tightened it back. Do you think i had an leak there somewhere. between the cooling head and crank case. I am really ready to give up. I have an hpi savage xl, revo 3.3, mgt 8.0 and never had that problem.