Recent Topics
gummed up oil cap
by Throt
11 minutes 25 seconds ago
Did I buy counterfeit filters?
by Paul_Bell
36 minutes 33 seconds ago
Buying screwdrivers anymore?
by JHZR2
43 minutes 46 seconds ago
DUI checkpoint
by Stelth
Today at 10:19 PM
Recommend an oil for new to me 1995 saturn sc2
by Alltherage
Today at 10:13 PM
Safe to Use Toyota Red or Pink in 1991 Ford F150?
by e55amgbenz007
Today at 09:22 PM
Long trip, OLM on 55% change oil or not?
by donnyj08
Today at 09:07 PM
'13 Ford Ecoboost 3.5L twin turbo 5w30 UOA's
by TurboFX
Today at 08:42 PM
How do you fix a broken door mirror?
by MalfunctionProne
Today at 08:02 PM
Changing the clutch in an ATV
by methusaleh
Today at 07:55 PM
1979 John Deere 210
by BigJohn
Today at 07:44 PM
Rigid Multi Tool Kit $25.88
by Warstud
Today at 07:33 PM
Newest Members
Mradley, dunni88, slapshot111, mike4230, TurboFX
52249 Registered Users
Who's Online
75 registered (147_Grain, 01_celica_gt, 2010_FX4, 1034, 01rangerxl, 5 invisible), 976 Guests and 208 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
52249 Members
66 Forums
223728 Topics
3547784 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#3131601 - 09/21/13 02:02 PM Marine 8V92 Detroit (trouble shooting)
ottomatic Offline


Registered: 03/14/07
Posts: 158
Loc: TN USA
60'Viking with 2 8V92's. Port engine runs perfect. Starboard engine won't go above 800rpms. No water coming out exhaust & was probably overheated by previous captain.
What kind of damage could owner be looking at. No blow-by. No water in oil. Just won't gain any rpms. Thoughts?????


Edited by ottomatic (09/21/13 02:03 PM)
_________________________
14 JSW 6M
06 Duramax,170,000 mi

Top
#3131620 - 09/21/13 02:33 PM Re: Marine 8V92 Detroit (trouble shooting) [Re: ottomatic]
BigWrench9 Offline


Registered: 12/12/12
Posts: 8
Loc: Michigan USA
8V92's only need 2 things. Fuel and air. First pull the air filters, and test. If no change, pull the fuel filters, drain and check for water. Fill and re test. If no change, pull the fuel return line, if no good stream runs out while running, the fuel pump is more than likely the culprit. If all these tests prove ineffective, more than likely the "rack" is out of adjustment,(including the governor and dead stop), or the injectors may be suspect.

Also, if electric or manual shutdown, make sure shutdown lever is free enough to not be causing a "shutdown" condition.

Top
#3131629 - 09/21/13 02:47 PM Re: Marine 8V92 Detroit (trouble shooting) [Re: BigWrench9]
ottomatic Offline


Registered: 03/14/07
Posts: 158
Loc: TN USA
Thanks. I'll try the above. What bothers me is there is no water coming out exhaust.

Also it's been a few years since I worked on a 2 stroke.
_________________________
14 JSW 6M
06 Duramax,170,000 mi

Top
#3131649 - 09/21/13 03:19 PM Re: Marine 8V92 Detroit (trouble shooting) [Re: ottomatic]
Fleetmon Offline


Registered: 01/26/12
Posts: 1066
Loc: Pa
check the blower drive
_________________________
"In order to become the Master, a person must act as a servant."

NRA Endowment Member

Top
#3131894 - 09/21/13 08:38 PM Re: Marine 8V92 Detroit (trouble shooting) [Re: ottomatic]
hattaresguy Offline


Registered: 06/01/11
Posts: 5325
Loc: CT
Is 800rpm no load or under load?

The more pressing problem is that its not pumping water, that motor should heat right up, so I'm guessing 800rpm is no load? How did the motor overheat?

Check the impeller first, first step is getting it to run at temp and pump water.

Worst case its rebuild time, how many hours are on it?


Edited by hattaresguy (09/21/13 08:42 PM)

Top
#3132260 - 09/22/13 10:10 AM Re: Marine 8V92 Detroit (trouble shooting) [Re: ottomatic]
NYEngineer Offline


Registered: 12/12/06
Posts: 1084
Loc: NY, NY
Simplest thing ever on Detroits. Make sure the flap isn't closed on top of the blower.

I'm not positive marine engines have them but I know industrial gensets have them.

Top
#3133397 - 09/23/13 12:18 PM Re: Marine 8V92 Detroit (trouble shooting) [Re: BigWrench9]
FL_Rob Online   content


Registered: 06/03/09
Posts: 1456
Loc: gulf coast FL.U.S.
Hi there..I see it's your first post.

Thank you for responding.My mos in the Army was 63Delta. Your statement on checks and re-checks is 100 percent invalueable... and thankyou again for becoming a member.


sorry I meant bigwrench9+


Edited by FL_Rob (09/23/13 12:29 PM)
Edit Reason: wrong name

Top