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New Engine Please Help

This is a discussion on New Engine Please Help within the Internal Engine forums, part of the LSx Technical Help Section category; 98 SS New Engine with Truck Heads. Just started and appears to be running hot, pulled thermostat and tested good. ...

  1. #1
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    98 SS Camaro

    New Engine Please Help

    98 SS New Engine with Truck Heads. Just started and appears to be running hot, pulled thermostat and tested good. Hot water circulating in radiator and fans running but steam coming out temp sensor port. Any Advice?

  2. #2
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    2000TA

    change cap on rad, and over flow tank.you have a leak losing press,can not handle heat.

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    I can only run a few minutes and still trying to fill with water. Dont even have cap on rad. steam blowing bout temp sensor hole on head when i pull it out

  4. #4
    TJEA Retirement Home Dr.Crash's Avatar
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    How much anti-freeze have you put in? When i did my motor swap, it took about 4-5 start-up and cool down cycles to get the rad full. Could still have air in the system. How long has it run for?

  5. #5
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    not long. just enough to heat up. water is hot in radiator and circulating. shut down and pulled coolant sensor and just get steam out.I know the gauge is not accurate without water there so im afraid to run it long.seems to have air trapped in the engine. I'm a little paranoid since this has been an 8 year project that is finally coming together.

  6. #6
    Member NoscamaroSS's Avatar
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    2002 Camaro

    Pull the line off of the crossover tube that runs under your motor, put as much water in it that it will take, then start your car (with the line off) and continue putting water in til it starts coming out the line under your Throttle body.
    02 Camaro
    PRC Stg 2.5 5.3's, Futral F14, PP Typhoon intake, True duals, Performabuilt tranny, & 3500 convertor, HSW plate kit.
    *Old Time* 10.90@ 125mph

  7. #7
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    Thanks,I think I've got it. I took off the crossover hose,pulled the coolant sensor and forced water in with a waterhose and a rag .Then ran it with the sensor loose to bleed out the rest of the air. thanks again

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