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-   General Q & A (https://www.offshoreonly.com/forums/general-q-20/)
-   -   502 mag mpi not priming oil?? (https://www.offshoreonly.com/forums/general-q/321395-502-mag-mpi-not-priming-oil.html)

502formula 12-26-2014 01:59 PM
I had my sensor on the side about where the oil filter went. Wasn't sure what the one on the bottom of the block was

the deep 12-26-2014 02:39 PM
Is this pic helpful ?

http://i1243.photobucket.com/albums/...t/100_0928.jpg

FIXX 12-26-2014 03:32 PM
Originally Posted by 502formula (Post 4240327)
I had my sensor on the side about where the oil filter went. Wasn't sure what the one on the bottom of the block was
after over filling the engine with oil leave it sit for a few hours to give it time for the oil to seep into the pump..

502formula 12-26-2014 08:25 PM
Originally Posted by the deep (Post 4240346)
What sense is that next to your oil pressure sensor? And is that a oil temp sensor on the side? (Not the knock sensor)

the deep 12-26-2014 09:16 PM
Originally Posted by 502formula (Post 4240463)
What sense is that next to your oil pressure sensor? And is that a oil temp sensor on the side? (Not the knock sensor)
I believe that is a oil temp sender for the alarm system . http://www.mercruiserparts.com/showS...sp?pn=805605A1 http://www.mercruiserparts.com/Show_...WARNING+SYSTEM Also oil temp showing below remote filter sandwich adapter on the pic .

ezstriper 12-27-2014 10:44 AM
Originally Posted by 502formula (Post 4240463)
What sense is that next to your oil pressure sensor? And is that a oil temp sensor on the side? (Not the knock sensor)
should be low oil pressure light/buzzer

502formula 12-30-2014 04:04 PM
Ok I got Oil pressure on the gauge on the dash. It's deafly pumping through but it's not coming out the pushrods very well. Only one is dribbling out. Could it be from 25w-40 oil and its 25 degrees out?

sutphen 30 12-30-2014 04:32 PM
Originally Posted by 502formula (Post 4241866)
Ok I got Oil pressure on the gauge on the dash. It's deafly pumping through but it's not coming out the pushrods very well. Only one is dribbling out. Could it be from 25w-40 oil and its 25 degrees out?
most likely
have you been turning the motor over by hand to help it flow thru the lifter journals?is the oil coming out the line on the outside of the filter head?

donzi matt 12-30-2014 04:45 PM
How much pressure are you seeing on the gauge?

mike tkach 12-30-2014 04:48 PM
Originally Posted by 502formula (Post 4241866)
Ok I got Oil pressure on the gauge on the dash. It's deafly pumping through but it's not coming out the pushrods very well. Only one is dribbling out. Could it be from 25w-40 oil and its 25 degrees out?
yes,that oil does not flow easily at 25 deg.as mentioned keep priming and turn crankshaft a little .


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