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Thread: E46 coolant leak, no preassure under preassure test

  1. #1
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    E46 coolant leak, no preassure under preassure test

    My 02 2.2 wagon is leaking coolant.
    Changed the upper radiator hose as that was leaking but still problems.
    I've tried a preassure tester, but there is no preassure at all (nothing wrong with the tester, tested on my e46 convertible without any problems).
    No visible leaks, no engine problems.
    Ideas?

  2. #2
    dworthy's Avatar
    dworthy is offline Wagon meister :) BMW Tech Expert
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    Is the system full?

    I would see about pulling sparkplugs and having a look inside the chambers.

    Also there is a plastic coolant hose that runs under the intake, you have to use a mirror to see if that one is leaking.
    Darin
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  3. #3
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    How long does it take before you need to add coolant again

  4. #4
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    Quote Originally Posted by jclausen View Post
    How long does it take before you need to add coolant again
    2 weeks if I'm driving about 50kms 5 days a week. Need to fill 0,5-,075L then

  5. #5
    dworthy's Avatar
    dworthy is offline Wagon meister :) BMW Tech Expert
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    Does the coolant low lamp come on? I have to add about ,25l every couple of months to the wagon, and it has been doing that since new. What I found out is you don't fill it to the full line, but to the min line, and you won't lose as much.
    Darin
    Current:
    16 220i Active Tourer Platinsilver MET (C08)/Dakota Black (PDSW), P7ACA, P7LDA, P7LHA, P9BDA, 6sp Manual - Wife's new toy!
    05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon My new Winter car.
    05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, SSK, Euro Infra-Rot front windshield and a trunk liner! Mr. Go_Fast Stored for the Winter
    Past:
    95 318is Montreal Blue Met (297)/Beige(K1SN) RIP, killed by an Idiot.
    84 M535i gray market Burgandy Rot Met/Black Leather Lowered by Intrax on bilies, poly everywhere, B&B cat back system, K&N, and a hitch! Da Beast - Still running w/400k+!
    91 316i euro Tizianrot/Gray cloth - E-36 w/M-40 RIP, but great on gas! Best was 38 MPG
    82 528i euro Saphire Blue Met/Blue Leather RIP
    79 525 euro Green/Green RIP
    79 318 Silver/Black - The first one that got it all started
    M-Flight Member

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