blown powerhead?

bigshrimpin · #1 08-06-2014, 03:00 PM

Do a compression test first . . . and DO NOT start or run the motor until you do.

could be something as simple as a bad fuel pump.

jamesbalog · #2 08-09-2014, 06:50 PM

Compression results

5 cylinders at 90
1 at 60

Time for a new one

phatdaddy · #3 08-09-2014, 08:11 PM

i would at least pull the heads off and look before i pulled the plug on that motor.

jamesbalog · #4 08-09-2014, 08:46 PM

Theres an outboard guy around here that ive heard is very good and very reasonable on price.

Ill be giving him a call monday, atleast see what he has to say

RidgeRunner · #5 08-10-2014, 09:11 AM

Probably went lean and burned a piston. Crap gas and hot weather pre-detonation city.

phatdaddy · #6 08-10-2014, 02:54 PM

i don't know how long you've owned the boat or what pm you've done, but before you spend much time or money on the powerhead, i'd make sure you can remove the lower unit. might not be a problem up north, but in the salty gulf, that vintage omc's had a tendancy to freeze on the drive shafts.

spoggy · #7 08-12-2014, 12:01 AM

Quote:

Originally Posted by jamesbalog

Theres an outboard guy around here that ive heard is very good and very reasonable on price.

Ill be giving him a call monday, atleast see what he has to say

Sorry for that 60psi cylinder, doesn't sound good. I think you're in my neighborhood, I'm in Carlisle Twp. Who's the outboard guy?

jamesbalog · #8 08-13-2014, 12:21 PM

Quote:

Originally Posted by spoggy

Sorry for that 60psi cylinder, doesn't sound good. I think you're in my neighborhood, I'm in Carlisle Twp. Who's the outboard guy?

Havent gotten it there yet but Brian at aquamarine in lorain

THEFERMANATOR · #9 08-13-2014, 02:34 PM

Quote:

Originally Posted by jamesbalog

Compression results

5 cylinders at 90
1 at 60

Time for a new one

I've seen engines ALOT worse than that run for years. It isn't ideal, but unless that low cylinder has a stuck ring it should still run(just be slightly down on power from the weak cylinder).

jamesbalog · #10 08-14-2014, 03:37 PM

Quote:

Originally Posted by THEFERMANATOR

I've seen engines ALOT worse than that run for years. It isn't ideal, but unless that low cylinder has a stuck ring it should still run(just be slightly down on power from the weak cylinder).

I fired it up, it ran didnt want to start in neutral but would start with a little throttle and would idle back down... it sounded like there was a little bit of rattling going on and i shut her down right away.

anyone have any insight on that?