Oil Pressure

[86WELLCRAFT]

Is it normal when i run the boat the oil pressures stays at 40 psi but if i suddenly pull it back to very slow the oil pressure gauge will drop to about 5 psi???? Then if i throttle up it will jump back up to 40psi??? It's not low on oil either.. Help Please

 

[crazyray]

Re: Oil Pressure

Does the engine have good oil pressure at idle when hot.... if so I would guess y9ou are having a problem of oil in pan surging away from pick up when you cut power suddenly.... insure that dipstick is accurate<br />if it is you might be able to cure problem by running a little extra oil.... if not I would suggest that baffles in pan are not controling oil..if you don't want to disassemble the engine you could install an accusump system from the after market which is a pressurized system to insure you have no oil stravation problems in future.....good luck

 

[fone_man]

Re: Oil Pressure

Put oil pressure gauge (mechanical) to check oil pressure... 10/15 dollars from Parts store... check at idle & record then check at full throttle & record... if within acceptable limits... then your sending unit is going bad... these normally are electrical units & not mechanical and wear out from time to time... they runn aprox @ 25-30 dollars at parts store & you need to know the level of gauge on boat such as 0-60 or 0-90... min & max... any questions use email below...<br /><br />fone_man<br />fone_man@bellsouth.net

 

[fone_man]

Re: Oil Pressure

Put oil pressure gauge (mechanical) to check oil pressure... 10/15 dollars from Parts store... check at idle & record then check at full throttle & record... if within acceptable limits... then your sending unit is going bad... these normally are electrical units & not mechanical and wear out from time to time... they runn aprox @ 25-30 dollars at parts store & you need to know the level of gauge on boat such as 0-60 or 0-90... min & max... any questions use email below...<br /><br />fone_man<br />fone_man@bellsouth.net

 

[fone_man]

Re: Oil Pressure

Put oil pressure gauge (mechanical) to check oil pressure... 10/15 dollars from Parts store... check at idle & record then check at full throttle & record... if within acceptable limits... then your sending unit is going bad... these normally are electrical units & not mechanical and wear out from time to time... they runn aprox @ 25-30 dollars at parts store & you need to know the level of gauge on boat such as 0-60 or 0-90... min & max... any questions use email below...<br /><br />fone_man<br />fone_man@bellsouth.net

 

[ntsilas]

Re: Oil Pressure

Hey 86Wellcraft - how did you resolve your problem? I just bought a 1999 Searay and have the same problem. My engine is a 5.0 EFI ALpha Mercruiser. Actually I am a little worried because when I am moving forward real slow, the pressure drops to about 5, a warning beep goes off, and the engine shuts down! Any help or insight as to hoe I can remedy this would be much appreciated! thx

 

[Walter]

Re: Oil Pressure

Hey Fone_Man...<br /><br />Would you post your reply one more time...I don't think he heard ya the first three times! Bwa, ha, ha...<br /><br />Just kiddin' pal...<br /><br />Walt

 

[fone_man]

Re: Oil Pressure

Walter:<br /><br />I do not know how that posted 3 times plus that was over two months ago!!!<br /><br />Most GM engines use a electrical Oil Pressure switch that over time goes bad. Same thing on my Old Ford PUP when I bought it... low oil pressure... bought new sending unit... BINGO... good pressure. I guess contacts were not sending correct amount of voltage. Plus usually when this happens they are the source of the small/slow oil leaks into bilge area.<br /><br />POSTING only once!!!<br /><br />