Recent Topics
Under valve cover 2015 R18 doing #4 service
by Marco620
23 minutes 45 seconds ago
Mobil1 5w30 Annual Protection?
by AirBull
Today at 09:06 AM
2005 Malibu "power steering" came across display
by 2James1
Today at 08:05 AM
Reducing noise in a Nissan VQ35HR
by Headgasket
Today at 07:53 AM
Oil Recommendation - 1990 Nissan 300ZX TT
by BobThe
Today at 07:29 AM
How to remove oil filter & not get covered in oil
by Cuba
Today at 07:18 AM
AC Delco PF46/Wix 51042XP Super Size Options?
by Egg_Head
Today at 06:25 AM
Pro's & Con's : Low Calcium Oil In GDI Engine ?
by ChrisD46
Today at 04:22 AM
Viscosity Measurement and Units
by MolaKule
Yesterday at 11:06 PM
Red Line 0w-30 03 4Runner V8 160K 10K interval
by OneEyeJack
Yesterday at 11:05 PM
Calif. Monticello Dams Glory Hole Video
by sleddriver
Yesterday at 10:57 PM
Rearview mirror button fell off w/ chunk of glass
by y_p_w
Yesterday at 10:54 PM
Lubricants Containing Titanium Dioxide
by MolaKule
Yesterday at 10:23 PM
Slow Pump. Is it a problem?
by jimbrewer
Yesterday at 10:22 PM
What is an Intelligent Molecule? Idiot Marketing
by drseth
Yesterday at 10:03 PM
2011 GT500
by legandrex
Yesterday at 09:41 PM
Who knows how to teach my dog to do this???
by Dyusik
Yesterday at 09:29 PM
What police/crime shows do you guys like?
by car51
Yesterday at 09:29 PM
Motorcycle coolant?
by maverickfhs
Yesterday at 08:13 PM
Looking for the BITOG member with a Trasko
by OneEyeJack
Yesterday at 07:40 PM
Newest Members
old_kodger, Eason111, Cuba, M54B30, killahurtz
60614 Registered Users
Who's Online
87 registered (another Todd, AirBull, 2015_PSD, 97f150, 901Memphis, 2012AccentSE, 7 invisible), 2046 Guests and 27 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
60614 Members
66 Forums
261452 Topics
4313055 Posts

Max Online: 3590 @ 01/24/17 08:07 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: 191
Loc: SE
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 41,000 mi
06 Duramax,202,000 mi
01 XR650R Plated, Titled

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

Registered: 12/12/12
Posts: 12
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.

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

Registered: 03/14/07
Posts: 191
Loc: SE
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 41,000 mi
06 Duramax,202,000 mi
01 XR650R Plated, Titled

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

Registered: 01/26/12
Posts: 1113
Loc: Pa
check the blower drive
"In order to become the Master, a cunning person may act as a servant."

NRA Benefactor Member

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

Registered: 06/01/11
Posts: 7180
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)

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

Registered: 12/12/06
Posts: 1175
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.

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

Registered: 06/03/09
Posts: 1509
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