Over heating

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Tomtom7

New Member
Posts
8
Location
Exeter
Ok.rad blew so changed that and water pump she will.sit all.day on tickover with no header tank cap on and temp normal take.it for a drive and in 1 minute temp goes sky.high and overheats???? Head gasket???? 2.5 dt BMW engine! Pls pls help thanks guys
 
The viscous fans make a lot of noise when they cut in properly they roar like a tank.
if you replace thermostat make sure it has a air bleed hole in the outer part and is at the top.
 
Ok.rad blew so changed that and water pump she will.sit all.day on tickover with no header tank cap on and temp normal take.it for a drive and in 1 minute temp goes sky.high and overheats???? Head gasket???? 2.5 dt BMW engine! Pls pls help thanks guys

Sadly cracked head more likely. Check for pressure build with a static test rig.
 
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