Main Menu
Advertisement
Affiliates
Advertisement
Newest Members
ntxduffer, OKBlindHogg, TDog301, Chris N USMC, laserbeak
108021 Registered Users
Top Posters
TexDawg 88638
hopalong 78895
Pilothawk 76394
John175® 67590
JDavis7873® 67390
FattyMcButterpants 60868
Derek 🐝 60281
Tritonman 57993
LoneStarSon® 54406
SkeeterRonnie 53367
facebook
Forum Stats
108021 Members
60 Forums
811306 Topics
10275467 Posts

Max Online: 36273 @ 01/23/13 02:34 PM
Topic Options
#12002458 - 12/24/16 10:48 PM Clunking in lower unit
HornedFrog'07 Offline
Outdoorsman

Registered: 05/31/11
Posts: 197
Loc: Dallas, TX
Changed my impeller plugs and fuel filter and everything seemed to go smoothly. Engine was running great before I performed the maintenance. Put muffs on and let the engine warm up. Put it in gear and everything seemed great. Put it in reverse and the lower unit was clunking every few seconds. It was almost like the gears were broken in the lower unit. Forward it seemed good but reverse it was not. I turned it off and restarted only to hear the same thing again.

Mercury 115HP 2 stroke.

Wondering if I need to take it in and what I could have done wrong changing the impeller to have caused this. Please help!
_________________________
____________________________________________________________

"Fight em till hell freezes over, then fight em on ice"

Top
#12003502 - 12/25/16 08:25 PM Re: Clunking in lower unit [Re: HornedFrog'07]
Topwater2 Offline
Pro Angler

Registered: 03/06/14
Posts: 789
I've got nothing but keep us informed when you find out what it is.
_________________________
FishKen

Top
#12003887 - 12/26/16 05:25 AM Re: Clunking in lower unit [Re: HornedFrog'07]
HornedFrog'07 Offline
Outdoorsman

Registered: 05/31/11
Posts: 197
Loc: Dallas, TX
Ttt
_________________________
____________________________________________________________

"Fight em till hell freezes over, then fight em on ice"

Top
#12003947 - 12/26/16 06:59 AM Re: Clunking in lower unit [Re: HornedFrog'07]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 11424
Loc: Littlefield Tx & Lake A. H. US...
Shift cable adjustment. Not fully engaging into reverse. Adjust cable slightly toward reverse.
_________________________
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD

Top
#12005247 - 12/26/16 10:11 PM Re: Clunking in lower unit [Re: HornedFrog'07]
OPTI Online   content
Extreme Angler

Registered: 06/23/04
Posts: 1453
Loc: Benbrook Tex
Actually if you have a stainless prop this is normal when running on earmuffs cause there is no load on the prop. ....OPTI

Top
#12032912 - 01/10/17 09:25 PM Re: Clunking in lower unit [Re: HornedFrog'07]
HornedFrog'07 Offline
Outdoorsman

Registered: 05/31/11
Posts: 197
Loc: Dallas, TX
Ttt
_________________________
____________________________________________________________

"Fight em till hell freezes over, then fight em on ice"

Top
#12034894 - 01/11/17 08:51 PM Re: Clunking in lower unit [Re: HornedFrog'07]
OPTI Online   content
Extreme Angler

Registered: 06/23/04
Posts: 1453
Loc: Benbrook Tex
Do you have a Stainless prop have you checked the gear lube check the bottom drain plug has a magnet on the plug well some did some didn't and if you have gear damage the metal from the damage will collect on the magnet. Now you will have some I call it fuzz on the magnet that's normal but if you put the fuzz between your thumb and index finger and rub it between your finger and your feel small chunks there is a problem. I have heard them rattle with a alum prop also but not a loud.....OPTI

Top
#12035247 - 01/12/17 06:09 AM Re: Clunking in lower unit [Re: HornedFrog'07]
Bulletman99 Offline
Pro Angler

Registered: 10/26/16
Posts: 513
Loc: South Texas
Opti is correct a "clunk" is normal when not under a load and it is still possible your shift cable needs a minor adjustment. Cables can wear over time and stretch slightly and need to be adjusted back within specs.
_________________________
Bullet 20XD
JSRE Modified Merc Promax

Top



© 1998-2018 OUTDOOR SITES NETWORK all rights reserved USA and Worldwide