Oil leak from arp head bolt
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TECH Enthusiast
Joined: Aug 2006
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From: Hamlin ny
Oil leak from arp head bolt 
just put my motor back together and has been running great, but have noticed the front passenger arp head bolt by the coolant pipes is seeping oil, none of the other bolts leak so I’m guessing I either forgot to use thread sealant or used too little, my question is can I just pull the bolt out clean everything up and reseal it? Or am I going to have to drain the whole block of coolant before I can take it out?
I'm not sure how oil would leak from a head bolt. Seems more likely to be coming from above the bolt and just collecting there. Check the valve cover and valley cover, they seem more likely to be the leak point to me.
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Joined: Jun 2016
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From: Central Cal.
It's actually physically impossible for oil to leak out of a head bolt hole, as there are no oil lines in the heads, and no way for oil to reach the outer head bolts. As was said, look elsewhere.
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From: Hamlin ny
If that’s the case then I’m REALLY stumped cause I looked all over and can’t see where else it would be coming from, at first I thought it was the pcv line dripping on to it but it’s completely dry, and there is no oil anywhere else
That's by an intake port? I think it'd be more likely to be oil in the intake seeping out of perhaps a bad seal, or maybe just a valve cover gasket weeping. As mentioned there's not really any pressurized oil passages by the head bolts.