Re: [OMC-Boats] Carb Issue? Or maybe Water issue?

From: heavy <heavy@...>
Date: Sun, 28 Jun 2009 14:26:54 -0400

Thanks Jeff, I am going to try your clear tube idea today, it would be
helpful to know how much water is actually flowing through the engine at a
given time.

As for the cowling, no vents other than the back ports and the blower that
pulls air out and up through the backside of the boat. I was planning on
leaving the cowling at home today so if I needed to get into the engine it
would be easier, but that might change the circumstances that caused the
issue in the first place. Well see.


From: "jd" <jdood@...>
Sent: Sunday, June 28, 2009 9:18 AM
To: "Evinrude & Johnson Boats of the 1960's and 70's"
Subject: Re: [OMC-Boats] Carb Issue? Or maybe Water issue?

On Jun 26, 2009, at 3:41 PM, Jeff LaCoste wrote:

> After many weeks of slower rides around the lake, last week I took
> the 1964 Johnson Deluxe V6 155hp out into open water to run it and
> see what would happen. Got off to a slow start and steadily climbed
> up to 3/4 throttle for a couple miles when it started to cough,
> once, then twice, so we slowed and turned back for the dock. It
> seemed to be running smooth once again, so we increased the speed
> and once again it coughed and sputtered.
> We took off the cover and idled for a bit and after a while it quit
> and wouldn't start. We waited and tried again but nothing. We
> thought maybe over heating, or no gas. We noticed the Barr exhaust
> manifolds were a little warmer than usual, bottom hoses were warm,
> top were cooler. Thermostat was replaced last year. We were getting
> good flow from the back stream. Water flow seemed a little low in
> the large water Gates hose when squeezed.

a cool tip i picked up from someone on this list last year......change
out your hoses to clear hoses. I did all mine, didn't take that
long, Home Depot has hosing, heat hasn't seemed to be an issue
with melting etc. Instantly shows you the water moving through the
engine and where. And it just looks neat seeing the water
circulating around. I still have mine on and plan to keep them
on until i get everything solid.
> When cranking the engine we couldn't see much fuel going into the
> carb. Fuel was supplied by a 6 gallon tank (temporary while
> refurbishing the old tank) connected to the mechanical fuel pump.
> The other day I go out to start troubleshooting, get in the boat,
> turn on the water to the stern drive, and it fires right up! Go
> figure.
> Could be overheating. Maybe the float needs to be adjusted, if so do
> I bend the tang up or down? Last year I replaced the float with a
> new one that had a pinhole.
> anyone have any thoughts before I try it out again this weekend?

just curious, probably unrelated - but is your cowling vented?

> thanks.
> Jeff
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