first, I'd like to ask you a question. Is there actually no oil pressure, or is your light just on or your gage reading low?
If your oil pressure is actually zero, the most likely cause would be the oil pressure relief valve (or plunger) inside the oil filter adapter part of the timing cover. It should move freely, if you push it in with your finger it should come back out without binding and the bore should be nice and smooth. I've seen these cause zero oil pressure before many times.
And, your other question about the dot on the crank gear. That's just for valve timing. :Wink:
Thursday, July 13th, 2006 AT 10:36 PM