www.iFourWinns.com

Hey, just wondering what others with VP 190hp SX are idling at? I'm at 900 rpm when warm which seems high.
I'm assuming that it is also resulting in occassional "run on" (I can't remember the name for the term) after turning key to off position.

-Dave

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2006 Horizon 190, Volvo 4.3GL, Sunsport
towed by 2007 4Runner 6 Ltd

Mine looks to be about 650

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Jvalich
http://www.badcock.com

'04 FW 288 Vista "Mental Floss"

My 4.3L GXi idles at about 650 too.

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2007 Horizon 200
4.3L GXi/ SX 225 HP

I've read some other posting on engine run-on since I've experienced it since we started running hard pulling tubes. I switched to a higher octane fuel and idle the engine prior to shut off and the problem seems to have subsided.

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-Rob.


Current boat: 2011 Yamaha AR210
Previous boat: 1998 Horizon RX 4.3GL SX

My 4.3GL also idles around 600-650 RPM. I was having run on issue (also called dieseling) with my 180 for the first tank of fuel which was from last fall. At the next fill up I put 89 octane in and that helped a lot. It also helps to idle for a short period before shutting the engine down if you have been running it hard. A 900 RPM idle point sounds a little high though.

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2001 Four Winns Horizon 180LE, VP 4.3GL/SX
2006 Ford F-150 Extended Cab 4x4, 5.4L

Thanks guys. I backed the idle down to 650 rpm...much better. Quite a simple job. The idle screw is readily accessible, and able to be turned w/ fingertips.
I think part of my "dieseling" is also due to the need for some fresh fuel. I'm trying to run it down pretty close to empty, before refueling (due to going from non-ethanol to ethanol fuel). Without causing debate, there seems to be a consensus not to mix too much of the two together.

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2006 Horizon 190, Volvo 4.3GL, Sunsport
towed by 2007 4Runner 6 Ltd

Wouldn't you rather run suspect fuel through something like your lawnmower rather than your boat? Consider siphoning the suspect fuel out and replenishing your tank with fresh fuel, rather than possibly compounding your problem with gunk, varnish and clogs.

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2007 Horizon 200
4.3L GXi/ SX 225 HP

Your boat should idle at 600 rpm. 900 is too high.

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One of 4 Previous (Sold) Boats:
2000 Four Winns 268 Vista

Current Boat: 2004 Chaparral 235 ssi cuddy