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Radiator explosion

Tiny
PAULU4C
  • MEMBER
  • BMW 328
The radiator on my 98 328i sedan exploded. The drivers side plastic tank blow a chunk off! I have never seen that before. There is no radiator cap on this car to vent pressure. It must vent pressure somewhere else in the system but I don’t know exactly where. The reserve tank cap has no visible spring. Any know the story on this?
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Monday, November 27th, 2006 AT 9:22 AM

1 Reply

Tiny
CAPTAIN HANK
  • MEMBER
  • 32 POSTS
The radiator cap on the reserve tank is vented. Go ahead and replaced it and the radiator. After installation of the radiator run the engine for a long period of time without the cap and watch if the water/coolant bubbles out of the plastic bottle. If it gushes out like a volcano then you still might have a problem.
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Friday, December 8th, 2006 AT 3:19 AM

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