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Gray Marine Phantom Four-45

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rick_conn
New member
Username: rick_conn

Post Number: 1
Registered: 05-2006
Posted on Friday, May 26, 2006 - 02:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I have a Phantom Four-45 that has lost oil pressue after I changed oil to mulit Viscosity Pennsoil. What do you think happened and what should I do. I would look at replaceing it with a rebuilt one and then having this one rebuilt if someone has one let me know of if you know someone that will rebuild mine or fix it let me know. Thanks Rick
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jb_castagnos
Senior Member
Username: jb_castagnos

Post Number: 129
Registered: 07-2002
Posted on Friday, May 26, 2006 - 07:11 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Did the pressure drop completely or just at idle? I'm not familliar with your engine, but it's possible the pressure regulator could be stuck open. On some engines this is accesable from the outside, usually a piston type valve with a spring. Look for a plug type cap near the oil filter. It's also possible the the pickup screen is clogged, this would require removing the pan to clean.
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larry_from_maryland
Senior Member
Username: larry_from_maryland

Post Number: 168
Registered: 07-2003


Posted on Friday, May 26, 2006 - 12:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

If you allso changed the oil filter it could be letting too much oil flow through.This is a common problem with new cheap made filters.With the bypass oil system you have,the oil can either go to the engine or go through the filter.
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rbprice
Senior Member
Username: rbprice

Post Number: 199
Registered: 11-2001


Posted on Tuesday, May 30, 2006 - 11:11 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Years ago I had a similar problem with my 1959 A/C D-14 farm tractor. Changed the oil & filter and had no oil pressure.

The problem was I had inadvertantly thrown away the prssure pipe that runs up the center of the filter when I took out the dirty filter. Without the pipe, there was no oil pressure. Check to see if you have a tube in the center of the filter base and if not go find the old filter and look for the tube.
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brianb
New member
Username: brianb

Post Number: 3
Registered: 07-2006
Posted on Tuesday, July 11, 2006 - 12:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

if you have mechanical oil pressure guage like i do change it to an electric sensor and guage. you may have a leak in the oil line to the guage!
Larry can you tell me where that oil filter is located on the four-45?????
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larry_from_maryland
Senior Member
Username: larry_from_maryland

Post Number: 178
Registered: 07-2003


Posted on Tuesday, July 11, 2006 - 06:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

No it could be in differant places.It may have been left off that engine.

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