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Thread: Lisle Radiator Burp Kit

  1. #1

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    Lisle Radiator Burp Kit

    I think I added my coolant back into the radiator a little too quickly after I cleaned up and replaced the petcock, as I pulled out 3 gallons of coolant but only 2 will go back in. I’ve elevated the car and squeezed the hoses to help get some of the air out, and also opened the upper petcock while filling until fluid came out but still have lots more room for more coolant

    I have a Lisle funnel. Would that be the best bet for burping in a situation where I think I need to add quite a bit more coolant or is there a better method?
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  2. #2
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    Quote Originally Posted by cv2065 View Post
    I think I added my coolant back into the radiator a little too quickly after I cleaned up and replaced the petcock, as I pulled out 3 gallons of coolant but only 2 will go back in. I’ve elevated the car and squeezed the hoses to help get some of the air out, and also opened the upper petcock while filling until fluid came out but still have lots more room for more coolant

    I have a Lisle funnel. Would that be the best bet for burping in a situation where I think I need to add quite a bit more coolant or is there a better method?
    It certainly won't hurt. We have a 2005 Jeep GC with a 3.7L. They are a PITA to bleed so I use my Amazon knock off funnel.
    FFR Cobra MK3 F5R100 5447 donor kit - picked up Jan 4, 2025 started build March 28, 2025
    Build thread here

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  4. #3
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    When I filled my engine, I removed the temp sender from the intake manifold to keep out air pockets in the engine.

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  6. #4
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    Quote Originally Posted by runamuk View Post
    when i filled my engine, i removed the temp sender from the intake manifold to keep out air pockets in the engine.
    winner, winner!
    FFR MkII, 408W, Tremec TKO 500, 2015 IRS, DA QA1s, Forte front bar, APE hardtop.

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  8. #5
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    x3 on removing the temp sensor from the manifold. That's the hot ticket. Very little burping needed after that.

    Greg
    Built an early MkIII years ago, sold years ago. Back after 18 years to build a MkIV
    Build Thread Here Partners: Levy Racing, Summit Racing, LMR, Breeze, Forte's Parts, Speedhut, ReplicaParts
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