Hi, i would like to thank the forum members for the valuable information i have found several times.
I purchased a new to me 88 Searay 230 cubby a few months ago. I have been working on it and giving it trial runs. First trial, i started sinking.. (thats another story, but.. i was smart enough to keep it on the trailer)
The boat has been neglected and i have been dealing with one problem at a time.
My latest problem was low oil pressure (i know its a big one). I had 25psi at start and on plane hot _3krpm_ it would drop to around 15, idle hot was on the high end of the red (10). My gauge has no numbers, I'm assuming it is 0-80. I thought maybe prev owner installed an automotive sender, but tested it and it was sending 243ohms with engine off, i still ordered one but don't thinks that is the problem.
Since the motor oil was very clean i had not changed it. Yesterday I replaced it with Mobil 1 15w-50 and also a quality filter (had to puncture the old one to take it out, it was crushed by the filter band wrench and it would not budge)
I added 5qts of oil and a 0.5qts of lucas stabilizer Goo, now my dipstick says that I'm way overfilled.
I went out and my pressure had improved significantly. 40 on plane, 20 hot idle.
The motor would not hold and idle, i had to rise it (1000) and readjust the throttle cable to match. I was unable to let gear off once engaged due to high rpm. Microswitch would engage if i force it, but engine would die in the process
The question are
1. Could there be any connection between the bad idle (that was good before and nothing else changed) and the oil change?
2. Did i overfill the oil?? (no pressure drop or foam) The dip says I'm about 2 in over.
3. How can i find the right dipstick for my motor. It has no mercruiser tag near starter and i have only been able to pull 57LG-SGI from the block.
I purchased a new to me 88 Searay 230 cubby a few months ago. I have been working on it and giving it trial runs. First trial, i started sinking.. (thats another story, but.. i was smart enough to keep it on the trailer)
The boat has been neglected and i have been dealing with one problem at a time.
My latest problem was low oil pressure (i know its a big one). I had 25psi at start and on plane hot _3krpm_ it would drop to around 15, idle hot was on the high end of the red (10). My gauge has no numbers, I'm assuming it is 0-80. I thought maybe prev owner installed an automotive sender, but tested it and it was sending 243ohms with engine off, i still ordered one but don't thinks that is the problem.
Since the motor oil was very clean i had not changed it. Yesterday I replaced it with Mobil 1 15w-50 and also a quality filter (had to puncture the old one to take it out, it was crushed by the filter band wrench and it would not budge)
I added 5qts of oil and a 0.5qts of lucas stabilizer Goo, now my dipstick says that I'm way overfilled.
I went out and my pressure had improved significantly. 40 on plane, 20 hot idle.
The motor would not hold and idle, i had to rise it (1000) and readjust the throttle cable to match. I was unable to let gear off once engaged due to high rpm. Microswitch would engage if i force it, but engine would die in the process
The question are
1. Could there be any connection between the bad idle (that was good before and nothing else changed) and the oil change?
2. Did i overfill the oil?? (no pressure drop or foam) The dip says I'm about 2 in over.
3. How can i find the right dipstick for my motor. It has no mercruiser tag near starter and i have only been able to pull 57LG-SGI from the block.