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Old 05-08-2015, 07:42 AM   #10
BYprodriver
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Join Date: Oct 2008
Location: O.C. CA
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Garage
Quote:
Originally Posted by Shape View Post
Thank you Timco and Jake.

Jake,

If the spark plugs are new only 100km, I will not be able to see a clean plug.

1) Should I run a leak down test or it will not show anything for a cracked head?

2) Should I have only one head cracked or both heads can be cracked?

3) I heard to diagnostic a cracked head is with blue penetrant liquid with compressed air, one people told me about laser, I never heard of that...

Thanks for all your help guys
Shape, the 2000-2001 heads are a thin casting & crack easily. Cracks may not leak until heated to operating temperature. Both can be cracked so you should remove engine then remove heads, have any cracks repaired,& insure there are no foreign particles blocking coolant passages in the heads. My 2000 did this @ 85,000 miles after water pump failure.
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OE engine rebuilt,3.6 litre LN Engineering billet sleeves,triple row IMSB,LN rods. Deep sump oil pan with DT40 oil.

Last edited by BYprodriver; 05-08-2015 at 07:45 AM. Reason: more info
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