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Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 9666
Experience:  worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling
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I have an ISM in a 2000 Volvo which is blowing/bubbling

Customer Question

I have an ISM in a 2000 Volvo which is blowing/bubbling coolant out of the overflow container on top of the radiator--the fill section is not overfull/underfull and engine is not hot. What is the problem here as it happen about once per month.?
Submitted: 2 years ago.
Category: Medium and Heavy Trucks
Expert:  Wayne replied 2 years ago.

Hi I'm Wayne

I will help you with this

that sounds like the head gasket of your Air compressor is going bad

pinch off the coolant lines with a rag and vise grips, is it stops then compressor

if it does not stop, then it is the engine head gasket

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