C4RL0 
Member 
 
Registered: 30th Sep 06
 Location: Cumbria 
User status: Offline 
 
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Nearly finished the C20LET now, had it running but it won't stop boiling over, and this is before it gets to 100c, sometimes well before.  
 
Anyone got any ideas?
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Dave A 
USER UNDER INVESTIGATION - DO NOT TRADE 
 
Registered: 10th Dec 03
 Location: County Durham 
User status: Offline 
 
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air lock? head gasket?
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Dave A 
USER UNDER INVESTIGATION - DO NOT TRADE 
 
Registered: 10th Dec 03
 Location: County Durham 
User status: Offline 
 
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kinked pipe?
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C4RL0 
Member 
 
Registered: 30th Sep 06
 Location: Cumbria 
User status: Offline 
 
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can't be head gasket, I have just rebuilt the motor.  So full head rebuild, checked for warping and new Z20 head gasket fitted.   
 
Tried for air locks, but if it is one, I can't seem to get rif of it.  How do i get rid of any air locks? 
 
And I never thought about kinked pipes, i'll have to have a look tomorrow.  Anything else it could be?
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Dave A 
USER UNDER INVESTIGATION - DO NOT TRADE 
 
Registered: 10th Dec 03
 Location: County Durham 
User status: Offline 
 
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1. get engine up to about 95 degrees 
2. remove cap from expansion tank 
3. put blowers on hot on setting 2 
4. run on fast idle (2000rpm) until coolant bubbles over from expansion tank 
5. let it bubble over for 5-10 seconds 
6. turn off engine and blowers 
7. leave to cool down completely 
8. top up expansion tank 
 
that will get any airlocks out. 
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Jake 
Member 
 
Registered: 24th Jan 05
 
User status: Offline 
 
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Dave you need that in your sig
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Dave A 
USER UNDER INVESTIGATION - DO NOT TRADE 
 
Registered: 10th Dec 03
 Location: County Durham 
User status: Offline 
 
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not a bad idea actually....
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