a boat

liusigou

Chief Petty Officer
Joined
May 11, 2015
Messages
541
this afternoon I went and checked a boat, year is 1998 and Mercruiser 3.0L. He started the motor without water and then stopped the engine. The cylinder pressure are 130,125,120,120. The engine oil is brand new. Also I found that the motor seemed not run smoothly while pressure testing when he turned the key. my current boat is smooth when I turn the key. Also he does not like to do the water testing because it has been winterization. should I continue? what does the owner want to hide?

the owner mentioned that cabuerator is needed to be cleaned.
 

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Last edited:

matt167

Rear Admiral
Joined
Sep 27, 2012
Messages
4,159
The block could be cracked and he knows something. It’s 2 drains on a 3.0l
 

liusigou

Chief Petty Officer
Joined
May 11, 2015
Messages
541
The block could be cracked and he knows something. It’s 2 drains on a 3.0l
You are right. I will not buy it without run it in the water. I think the oil will be milky after it running in the water if block is cracked
 

Scott06

Admiral
Joined
Apr 20, 2014
Messages
6,475
You are right. I will not buy it without run it in the water. I think the oil will be milky after it running in the water if block is cracked
Yeah when I sold a good working boat, add said everything worked willing to water test. As mentioned 2.5/.3.0 are easiest to drain. Needs a carb rebuild means it doesn’t run well. Compression is not great wonder if done after it is hot it will be higher.

when selling a boat I would not water test with out a deal and seeing the money, but if so he should do a water test…if he was buying vs selling he would want that too. Otherwise without water test drop the offer significantly .
 

RaceCarRich

Petty Officer 1st Class
Joined
May 31, 2015
Messages
234
So he ran it without a hose and muffs? 😬
Ruined impeller definitely. Possibly overheated exhaust shutters. Possible crack looking to hide.

Run…
 

cyclops222

Lieutenant
Joined
Mar 21, 2024
Messages
1,408
Keep looking for a perfect engine. Otherwise
You are just giving your money to lying strangers.
Your choice.
 

liusigou

Chief Petty Officer
Joined
May 11, 2015
Messages
541
Keep looking for a perfect engine. Otherwise
You are just giving your money to lying strangers.
Your choice.
you are right. I insisted on the water testing. He said OT has been winterization. but the boat was sold at the second day
 
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