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  1. #1

    Default 92 Suburban radiator hose keeps coming loose

    I have a 92 Suburban with rebuilt 350 (About 1000 miles) and the bottom radiator hose keeps blowing loose after driving and then stopping. Once the motor is turned off it takes a few minutes and the hose blows loose at the radiator. Radiator was new after rebuild too. Getting frustrated and ready to part out!

  2. #2


    take some 400 grit paper and afeather up that fitting the hose slides onto,, do the same on the inside of the radiator hose..
    Grab your girls hairspray,, spray some on the radiator fitting, let it sit for like 40 seconds then silde hose on and put on NEW clamp.

    It will never blow off again..

    Old FI trick to stop intercooler pipes from blowing loose.

  3. #3
    stephan's Avatar
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    Sep 2010
    Far West, Oregon USA,
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    That's good info Ezdaar. X2 on putting the new clamps on. That is the most likely cause is a crappy clamp, unless there's something wrong with your cooling fan & the pressure's just getting too high....
    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
    Holley 650, Flowtech Headers, Magnaflow exh.
    Jet Trans 700R4, B&M Ratchet, 4:10 gears,
    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol

  4. #4


    Thanks all. I replaced the bottom hose and clamps. I also replaced the radiator cap and I suspect it may not have been releasing like it should.

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