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Name:	Nutin Bitein -	Reply
Subject:	Vapor lock ???
Date:	7/17/2008 5:06:28 PM

After hours of fun tubing we stopped at Sand Island for a break, stayed about 1 hour and left I got about 100 yards away and the boat stalled. I could not get it to restart. Two families of 4 sitting a boat with no power !! Two nice ladies tubing their kids around stopped and towed us to Kowliga. Kevin, Mickey and two others went through the engine said it was vapor lock and that I needed to cool the engine before turning off after running it hard. Is this common? I never had it happen before. What can I do in the future? Thanks to the Ladies for the tow and Kevin, Mickey and crew they all did a great job getting us back to having fun.

Name:	JIM -	Reply
Subject:	Vapor lock ???
Date:	7/17/2008 5:40:53 PM

Vaper lock is when the fuel vaporizes before it gets to the carburator or Injectors on a EFI. Years ago on the drag cars we use to put cloths pins on the fuel lines to absord the heat and ice on the intake manifold and fuel line. The best thing to do is reroute the fuel line away from any heat source such as exhaust manifolds or pipes if it is a IO.

Name:	bama dave -	Reply
Subject:	Vapor lock ???
Date:	7/17/2008 9:36:18 PM

Give us more details, year, engine, etc. Is this the first time it's happened? How long since a major tune-up?

Name:	Nutin Bitein -	Reply
Subject:	Vapor lock ???
Date:	7/18/2008 10:28:38 AM

2003 5.0 volvo GL (carburated) First time it has happens regular tuneups. The enngine was running hot from tubing around 195-200. Could ethanol it gas do this?

Name:	LakeLover -	Reply
Subject:	Vapor lock ???
Date:	7/24/2008 2:57:30 PM

Anyone know any details about this??

Thanks,

LL

URL: Ethanol in Boats

Name:	Hunting231 -	Reply
Subject:	Vapor lock ???
Date:	7/24/2008 3:33:11 PM

Jim is correct on the cause.

If your boat has ventilation fans - run them at all times, even while running down the lake and thinking that you are getting enough air into the compartment. This should provide some cooling for the engine compartment and will probably eliminate the vapor lock problem as well as any " dieseling" problems when the ignition is shut-off.

Name:	CAT BOAT -	Reply
Subject:	Be careful...
Date:	7/24/2008 9:57:14 PM

I did not read that entire article. But what I read is real. It is something we are fighting everyday here. Put good fuel, 93 octane in your boat. We have done MANY engine failures this summer. Valve failures, detonation, etc. Read the sticker on the pump, for the % of ethonol in the fuel. It may be ok for lower HP engines, but it is killing the big ones. And, it is hurting the smaller ones that run at WOT for extended periods for skiing etc. My .02 worth.
Steve

Name:	F1Fan -	Reply
Subject:	Be careful...
Date:	7/27/2008 7:29:10 AM

"..it is hurting the smaller ones that run at WOT for extended periods for skiing etc"

Clearly, these people have excellent justification to just get more boat!!!

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