Vehicle & Technical > Suzuki

Vitara 8V nearly overheating

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LP32:
Been upto the Lakes today to do a couple of lanes. When traveling on the Motorway I noticed the needle moving towards the red. After turing the heater on to Blow and hot the needle came back to normal. Later in the day during a stop I checked the water (expansion tank full) although a bubbling / boiling sound was coming from the radiator? On my return home I checked again the expansion tank was full and could still hear the boiling / bubbling also a Hiss from the radiator cap. After the engine had cooled I checked again - Expansion tank empty and needed about 1/2 litre of water. The temp has been fine all day providing the heater has been on hot. I am suspecting the radiator cap anyone any pointers. Thanks.

Evilgoat:
Filled the rad with crud? Blow it out with a jetwash or hose, take it easy though.

Done this a few times :)

Might also have a dodgey radiator cap or pressure leak. Bet if you look in front of the fan at the back of the rad that its caked.

LP32:
The back of the rad looks OK, not long had a new water pump fitted and the guy the did it had the rad off but don't think he checked it. its been running fine on round town runs for a month or two since the water pump.

Evilgoat:
Hmm bit sus. Is the rad actually getting warm?

Is there any pressure when you take the cap off? (use a rag to save your hand)

LP32:
Rad is getting warm. Been OK local but the car never gets a real run until I use it, the other half commutes a mile round trip daily :roll:  Was guessing that it's when the engine is under load, Motorway and lanes etc?

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