Bubbles in over flow tank

Information and questions on GL1200 Goldwings (1984-1987)
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Motorcycle: 1984 gl1200a aspencade 40,000 miles

Bubbles in over flow tank

Post by matdirt »

When my bike is running I have bubbles in my overflow tank does that mean my head's a junk or at least one of them

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Location: Mohlsdorf, Thuringia, Germany
Motorcycle: 1984 GL1200 with EML GT3
1985 GL1200 Aspencade
1987 GL1200 Aspencade

Re: Bubbles in over flow tank

Post by Swanson69 »


I had the same problem before on one of my bikes. After changing both headgaskets, the problem was solved.

greetings from germany
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greetings from germany
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Re: Bubbles in over flow tank

Post by WingAdmin »

Generally bubbles in your coolant indicate a bad head gasket. Get an air compressor and pressurize each cylinder in turn to find out where the problem is, or you can also just do a compression/leakdown test to find the failed cylinder/gasket.
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