HomeCalendarFAQSearchMemberlistUsergroupsRegisterLog in

Share | 
 

 Fuel/oil film

View previous topic View next topic Go down 
AuthorMessage
thecarboss

avatar

Posts : 171
Join date : 2009-07-06
Location : Cumbernauld

PostSubject: Fuel/oil film   Fri Aug 14, 2009 5:58 am

I have noticed when i return to the marina and berth I see a film of fuel/oil residue floating at the rear of my boat. My thoughts are that it is unburn fuel comming through the exhaust.

It only happens when i have been out for a while and not when the engine is running in the marina to warm up. I would see the same thing when i berth at Luss. Its only visible for a few minutes and I would say its fuel rather than oil.

The engine (5.7merc) starts first time and runs like a dream, no missfires or over-run, temp exellent , oil pressure exellent. Although 11 years old it has not had a lot of hours so its in good shape otherwise.

Anyone else get this ? scratch
Back to top Go down
View user profile http://www.elitemotorcompany.com
Jellybean

avatar

Posts : 38
Join date : 2009-07-06
Location : Wishaw

PostSubject: Re: Fuel/oil film   Fri Aug 14, 2009 9:23 am

I think everyone gets this.... and I would say that you're spot on with your "unburnt" fuel diagnosis. No matter how new, good etc your engine is there will always be a very small un burnt fuel trace in the exhaust emissions. I wouldn't worry about it...I don't.
Back to top Go down
View user profile
NickOESEngineer



Posts : 9
Join date : 2009-08-13

PostSubject: Re: Fuel/oil film   Fri Aug 14, 2009 9:56 am

Hi Paul,
Loved the guitar pic!! I see this on boats I repair "Unburned fuel" correct. Depending on health of engine, carb engines worse than EFI engines. EFI's meter fuel much more precisely assuming theres not a problem with system. If engine is EFI I assume you have no other running troubles. Assuming you have no oil loss from drive lube oil header tank, as you would have mentioned this I guess. Depending on point of leakage oil film can also show in that situation.
Nick
Back to top Go down
View user profile
thecarboss

avatar

Posts : 171
Join date : 2009-07-06
Location : Cumbernauld

PostSubject: Re: Fuel/oil film   Sat Aug 15, 2009 2:10 am

Thanks Nick

I kina suspected thats what it was. No other fluid issues at all and the boat is fairly economical so I dont think there is a fault.

I have been asked a few times by other owners who have seen the film at my boat but they are on the opposite side of the leg and their discharge goes the other way ( towards the bow) so its less obvious.

It helps to air some of these things to put boaters minds at ease ( as well as my wife who thinks the boat will burst into flames) so thanks for your input.

Paul Smile
Back to top Go down
View user profile http://www.elitemotorcompany.com
Sponsored content




PostSubject: Re: Fuel/oil film   

Back to top Go down
 
Fuel/oil film
View previous topic View next topic Back to top 
Page 1 of 1
 Similar topics
-
» 85 K100 fuel sensor
» Bike will not start (fuel injector, fuel pump, HALL)
» LS1 Fuel Line Install
» FS R1 Carbs R1 fuel pump
» fuel pump for 85 k100RT

Permissions in this forum:You cannot reply to topics in this forum
Cameron House Marina Members' Forum :: The Boat Yard-
Jump to: