volvo 140A 4cyl not reaving up the rpm's

[Jeff]

<duplicate threads merged>

[kevylongshot]

didnt get that one yet jeff

[pistnbroke]

tell us what prop you have and the gearbox ratio .....you said you think it may be over propped

[kevylongshot]

its a 270 volvo leg, the boat had a 4 banger in it before this one, the prop. is a 15x15 three blade left hand, according to the dealership the prop is the right size, i kinda think it is a motor out of a car and the cam is diferent? iam not sure though, but it runs really good and sounds great,just no power only turning up about 2000 rpm's,thanks alot

[PAR]

I think you just don't have the diagnostic skills to access this engine's issue(s). I know that a skilled mechanic would quickly run down a set of well established routines and within a few minutes would narrow you issue(s) down, probably with a very accurate guess within 5 minutes. I'm fairly sure I have a good idea and the engine isn't in front of me, but you are still struggling deciding is it's fuel delivery, ignition or gearing. Look, literally in one minute, I could isolate the problem(s) to the related system(s).

Bite the bullet, and have a real boat mechanic have a look. Another option would be to buy a book for your engine/drive combo and run through the procedures yourself, though this does require some understanding of how these systems work and looking for the "usual suspects" when certain "symptoms" appear, which requires experience and something that is clearly missing here.

[kevylongshot]

the 140 volvo is getting blow by a mechenic has told me the rings are gone , also he did a leak test and it failed , the motor has to be overhauled, 3.000 $ ,does anyone know what other used engine i could use, it has a penta 270 leg and they are a AQ series , any sugestions would help as iam not very good at this stuff, but love to be on the water, to many this may all sound stupit, but to me iam learning lots, and i am blessed to have found this site , thanks alot guys

[pistnbroke]

Dont trust the mechanic ...he did a cylinder leakage test you say .....the compressed air he put in the cylinders came out in the sump ....If that is right you should have lots of pressure in the sump when you pull off the oil filler .....If this is not the case he is pulling your wallet ...were you there when he did the test ??? If its scrap why not pull the head and check the gasket or do a compression test with a cheap auto gauge ......

[kevylongshot]

its gone

a guy from the coast came up and gave me good money for it , its gone ,, thank the lord, i bought a turn key operation its a v190 invader 1991 its in great shape, its a 19 ft'er with a 5.7 merc lots of jam, there was 4 adults and my 2 boys and we toped out at 40 mph, that was pretty good for a boat load i think any ways , iam pretty happy with it, any advice out there that you guys know about the invader or the 5.7 LT merc ? i hope it is a good egine, it seemed good no oil anywere and it souned nice . a older couple used it on a small lake , it was on the same lake since new, i paid 7,200 $ for it canadian ofcourse , later guys , get back to me soon ,