[Public-List] A4 question

[Glenn Brooks]

Bill,  what engine do you have? 

Any number of possibilities...  Could have been a bit of dirty fuel, or a shot of water that froze in  the fuel system and reduced flow to the engine, or if an older gas engine, something to do with the ignition.  Also a common and vexing problem in old  boats is they eventually can develop a pin hole in the pickup tube in the fuel tank through galvanic corrosion , sometimes even the tube breaks completely off.  In that case the pickup tube can't draw adequate fuel into the injectors or carb and so the engine runs slowly or quits. But will start up again when fuel sloughs around the tube.   Usually it's easy to check the pickup tube, if you have an inspection plate on top of the tank.  Something dragging on the prop also is a possibility.  

Easiest thing is to run the engine some more, under different loads and see if the problem reoccurs.  If not, probably just bad fuel and your good to go...

Glenn Brooks
dolce 318

Sent from my iPad

> On Jan 5, 2014, at 7:28 PM, a silva <picomar1957 at hotmail.com> wrote:
> 
> im not a xpert but maybe something got into your prop
> check oil in transmision try turning motor in gear with hand crank and listen or feel for anything unusual
> 
> -----Original Message----- From: Bill Ydel
> Sent: Sunday, January 05, 2014 10:58 AM
> To: Alberg 30 Public List -- open to all
> Subject: [Public-List] A4 question
> 
> I was running the engine yesterday to bring it up to operating temperature. It started just fine and ran smoothly but after a few minutes the rpm's dropped to about 600. I had been running in gear at the dock at about 1200 RPM's, I took it out of gear and gave it some more throttle to get it back to 1200. After a few moments the RPM's increased.
> The engine was still running smoothly.
> Anyone have any thoughts about the cause for the change in RPM's. I would expect that it could be a number of things, but let's start with the simple. I am NOT a mechanic.
> 
> Bill
> SallyB #441
> Charleston, SC
> 
> Sent from my iPad
> 
> 
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