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#11907255 - 10/29/16 06:56 PM Blown lower unit or Rod?
Snook20 Offline
Angler

Registered: 04/10/11
Posts: 338
Loc: Tyler
Ive got a 1982 OMC evinrude 35hp on my aluminum boat that has run like a champ for a year now. the only issue ive had is the seals wearing out fast and letting water in the lower unit. last week I started hearing a knocking sound while in forward gear that would get faster as you increase the throttle. I couldn't tell where exactly it was coming from but it sounded more in the midsection down towards the lower unit. anyways yesterday I went out again. the knocking got louder and louder until the motor started loosing rpms so I throttled down and throttled back up then i heard this god awful crack/breaking sound followed by the sound of something broken loose being tossed around. this was about 3 seconds then I slammed her back in neutral. luckily I was able to idle back to my boathouse. after I pulled her out of the water i drained the lower unit oil i had just replaced and it looked terrible with a side of water. So based on the early symptoms and the final breaking noise does this seem like more of a Lower unit or blown rod problem?

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#11907563 - 10/29/16 09:56 PM Re: Blown lower unit or Rod? [Re: Snook20]
Dawson Hefner Offline
Extreme Angler

Registered: 09/10/09
Posts: 2782
Loc: Brownsboro, Tx
You need a new lower unit.

Sucks, been there done that more times than I want. You may be able to fiND a used one that will just bolt right up.
_________________________

www.texasmegafishadventures.com for guided rod and reel alligator gar angling
Licensed Guide Dawson Hefner
903-721-4296

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#11907798 - 10/30/16 07:44 AM Re: Blown lower unit or Rod? [Re: Snook20]
Gamblinman Offline
Extreme Angler

Registered: 11/26/02
Posts: 2008
Loc: Yantis, TX
Based on what you've told us, I would suspect the lower unit is out.
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#11908048 - 10/30/16 11:29 AM Re: Blown lower unit or Rod? [Re: Snook20]
boatwhisperer Offline
Extreme Angler

Registered: 09/25/10
Posts: 1479
Loc: hurst, tx
if you found metal shavings in the lower unit oil I would highly suspect the lower unit but if there was no metal in the lower unit oil I would highly suspect the powerhead do a compression test
_________________________
boatwhisperer

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#11908051 - 10/30/16 11:29 AM Re: Blown lower unit or Rod? [Re: Snook20]
boatwhisperer Offline
Extreme Angler

Registered: 09/25/10
Posts: 1479
Loc: hurst, tx
if you found metal shavings in the lower unit oil I would highly suspect the lower unit but if there was no metal in the lower unit oil I would highly suspect the powerhead do a compression test
_________________________
boatwhisperer

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#11908280 - 10/30/16 02:22 PM Re: Blown lower unit or Rod? [Re: Snook20]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10515
Loc: Littlefield Tx & Lake A. H. US...
Pull the lower unit and start it for a couple of seconds. No knock then it`s the lower.
_________________________
“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

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