Consequences of running out of gas?

jtexas

Fleet Admiral
Joined
Oct 13, 2003
Messages
8,646
I don't disconnect my fuel line at the end of the day because I don't want to run my motor without oil (premix). <br /><br />But I usually run it until tank 1 is empty before switching to tank 2. It coughs a couple times I shut it down, don't actually run til it stops. Am I doing any harm to my motor?<br /><br />thanks,<br />john<br /><br />p.s. in case it matters, it's an old 3-cyl OMC.
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,578
Re: Consequences of running out of gas?

JT, Those motors are designed for that, and no harm will occur. Motors that have oil injection do not like to be run out of gas, since that ruins the gas-oil mix ratio.
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: Consequences of running out of gas?

Running that motor out of gas means youre out of oil too. At an idle it'll be somewhat forgiving but under a load the pistons really dont like that.<br /><br />A modern oil injected motor will sense the lack of fuel pressure and pump more oil. Specificaly to save the pistons.
 

Ben Konopacky

Petty Officer 1st Class
Joined
Apr 5, 2004
Messages
296
Re: Consequences of running out of gas?

jtexas; I hate running out of gas while fishing(always happens at an enoppertune time)not that it hurts the eng."I dont think so".But what I did was hooked two tanks in series ,one siphons into the other and no switching of tanks.no gas oder on hands,eliminates switching tanks...
 

timfromfc

Petty Officer 2nd Class
Joined
Jul 29, 2004
Messages
149
Re: Consequences of running out of gas?

Ben, how did you hook the tanks up? It sounds like a great idea and would make my life easier!
 

dajohnson53

Lieutenant Commander
Joined
Apr 28, 2004
Messages
1,627
Re: Consequences of running out of gas?

I added an in-line fuel flow meter a couple of years ago. I have two built-in 24 gallon tanks and now I know what I have left in the tank so I can switch before it actually runs out, but when there is very little fuel left. The gauge I have had 5% accuracty out of the box (I measured it), and I re-calibrated so it's probably even closer now. I switch at about 23.5 gallons<br /><br />Just another gadget to spend your boating dollar on, but I really like the one I have. It's a Standard Horizon, but is virtually identical to the Navman unit, as far as I can tell. I've written a review of this, which you can probably find with a search.
 

jtexas

Fleet Admiral
Joined
Oct 13, 2003
Messages
8,646
Re: Consequences of running out of gas?

Ben, those aren't metal tanks, are they? If so I hope you have a ground wire connecting them to avoid any sparks from static electricity.
 
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