Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 03-04-2016, 01:50   #1
Registered User

Join Date: Aug 2013
Posts: 105
Cleaning inboard engine

I have a question about cleaning an inboard engine. When I clean the engine in my truck, I spray it with "Gunk" engine degreaser and then hose it off. But when I clean the engine in my boat, it's more like a sponge bath. I am afraid of what the degreaser residue in the bilge might do to the plastic parts of my bilge pumps and other things in the bilge. Any thoughts on this?

ingrid75 is offline   Reply With Quote
Old 03-04-2016, 02:51   #2
Registered User
deblen's Avatar

Join Date: Oct 2014
Location: Grand Manan,N.B.,Canada N44.40 W66.50
Boat: Mascot 28 pilothouse motorsailer 28ft
Posts: 1,560
Images: 1
Re: Cleaning inboard engine

Did a quick Google "Gunk Engine Degreaser"
There are several versions of it.
Here is link to CEB1 MSDS

You should look up the MSDS for version you intend to use.
What I read:
Uses natural products-Citrus oil,etc.
Warnings-Vapor is noxious/need good ventilation/explosive
Bad for marine life

Would hot water,Dawn & a parts brush do the job??

My personal experience & humble opinions-feel free to ignore both
deblen is offline   Reply With Quote
Old 03-04-2016, 04:31   #3
Registered User
ranger42c's Avatar

Join Date: Aug 2012
Location: Maryland, USA
Boat: 42' Sportfish
Posts: 3,168
Re: Cleaning inboard engine

A spray of Dawn/water and then a Shark Steamer works pretty well.

You'll still have to clean the bilge underneath, afterwards.

Selby Bay, South River, Chesapeake Bay, USA.
ranger42c is offline   Reply With Quote
Old 04-04-2016, 10:41   #4
Registered User

Join Date: Oct 2011
Posts: 2,504
Re: Cleaning inboard engine

What ever product you use, have lots of ventilation. I once got a job on a large motor yacht because the previous engineer had used an engine cleaner inside the boat and ended up being flown 1000 miles to the nearest burn center. BE CAREFUL. ____Grant.
gjordan is offline   Reply With Quote
Old 03-05-2016, 09:06   #5
Registered User

Join Date: May 2012
Location: Central California
Boat: Catalina 30
Posts: 874
Re: Cleaning inboard engine

Any other cleaning agents recommended?
I thought kerosene was suggested. Would
that be worth trying?
You can't buy happiness, but you can buy ribeye.
jongleur is offline   Reply With Quote
Old 03-05-2016, 09:25   #6
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 18,415
Re: Cleaning inboard engine

You know honestly, I don't let an engine get so bad that it needs anything but warm water, mild soap, and a counter brush. I have purchased engines that were dirtier than that, and I have always used Gunk, foamy seems to work better.
But not on a boat.
I wouldn't go stronger than Purple Power on my boat, that and a little elbow grease will clean most anything
a64pilot is offline   Reply With Quote
Old 03-05-2016, 16:54   #7
Senior Cruiser

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Nevada City. CA
Boat: Sceptre 41
Posts: 3,765
Images: 9
Re: Cleaning inboard engine

+1 on Purple Power. Good stuff. Vary the concentration according to the grime.
Fair Winds,


Between us there was, as I have already said somewhere, the bond of the sea. Besides holding our hearts together through long periods of separation, it had the effect of making us tolerant of each other's yarns -- and even convictions. Heart of Darkness
Joseph Conrad
Charlie is offline   Reply With Quote
Old 04-05-2016, 23:50   #8
Senior Cruiser

Cruisers Forum Supporter

Join Date: May 2013
Location: Oregon to Alaska
Boat: Wheeler Shipyard 83' ex USCG
Posts: 1,914
Re: Cleaning inboard engine

If the engine has a little diesel and oil, I use dish soap. Strength determined by thickness of buildup. Works best if sprayed on and let sit. For heavy deposits, I use a product called Super Clean. It appears to be a really strong soap. I flush well with fresh water. I've been doing it this way for 50+ years in wood, steel and fiberglass hulls. I've never had a problem.
The dish soap is probably better for killing the diesel smell.
Lepke is offline   Reply With Quote
Old 05-05-2016, 06:16   #9
cat herder, extreme blacksheep
zeehag's Avatar

Cruisers Forum Supporter

Join Date: Jul 2008
Location: furycame alley , tropics, mexico for now
Boat: 1976 FORMOSA yankee clipper 41
Posts: 18,017
Images: 56
Send a message via Yahoo to zeehag Send a message via Skype™ to zeehag
Re: Cleaning inboard engine

mine wipes down well with a soft cloth.
have enough issues in bilges, i do not need to add to that.

zeehag is offline   Reply With Quote

cleaning, engine

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Running an Inboard Engine While on the Hard endoftheroad Engines and Propulsion Systems 27 15-02-2012 12:04
Loss of Power - Inboard Volvo Penta Diesel Engine Kiwi@Sea Engines and Propulsion Systems 6 24-11-2011 08:24
Replacing Inboard Engine with Electric Motor boat_alexandra Engines and Propulsion Systems 10 30-12-2009 20:50
Inboard "conventional" engine Torpedo Engines and Propulsion Systems 4 23-02-2009 09:17

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 05:27.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.