Re: [OMC-Boats] carb question....bittersweet weekend outing

>
>
> JD: I was going to ask before if you were sure your temp. guage was
> reading accurately, but odds are with it stalling and giving what
> seem like accurate readings later, that's probably not it. Still,
> it may be worth checking to be sure -- the calibration could be off
> or set incorrectly.

i wish.......it was a brand new gauge with a matching sender i had
just bought/installed about a week ago. Switched hoses around and
literallly watched the needle move down from 225 and hold steady at
170. amazing what a reversed hose can do! So now with hoses in
right places I am back up to pegging temps for some reason. Slight
chance it's the gauge....but doubtful. I don't know the mechanics
of the guts of a sending unit, but i'm guessing they don't just fail
all of the sudden....but maybe so?

It was only $16 at Schucks Auto Parts.......worth it for me to get
another as a back up to test things in times like this.

> I kinda like your last idea, though I'm thinking about taking it
> one step further and setting it as a redundant guage. On the bright
> side, at least you got a good day of boating in and hit trouble on
> the way back to the dock instead of the way out.

yep - could've been much worse. Had it not started getting to
choppy to be enjoyable, I would probably still be out on that lake
waiting for a tow back.

> I'll be launching for the 1st time this w/e (work has been brutal --
> the negative side of being lucky enough to still be employed as an
> automotive engineer). Hopefully I won't find any demons this year!

good luck with both! hope you don't work for GM.

>
>
>
> ----- Original Message ----- From: "dan" <dbjt@...>
> To: "Evinrude & Johnson Boats of the 1960's and 70's" <omc-boats@...
> >
> Sent: Monday, June 22, 2009 10:15 AM
> Subject: Re: [OMC-Boats] carb question....bittersweet weekend outing
>
>
>> andy... not sure what engine you have.....but i have exactly the
>> same problem.... move the throttle slowly and I can get almost 30
>> MPH on the GPS...
>>
>> was thinking of replacing the carb altogether as i have cleaned and
>> soaked it twice..............Dan...........spark arrestor ?????
>>
>>
>> ----- Original Message ----- From: "jd" <jdood@...>
>> To: "Evinrude & Johnson Boats of the 1960's and 70's" <omc-boats@...
>> >
>> Sent: Sunday, June 21, 2009 10:38 PM
>> Subject: Re: [OMC-Boats] carb question....bittersweet weekend outing
>>
>>
>>> Thanks andy - marking starting points is a good idea.
>>>
>>> i'm still trying to see if i can pinpoint more what's going on
>>> before i start twisting those screws. I had a interesting
>>> weekend with the boat. Camped next to a huge lake. A huge lake
>>> that looked like a miniature ocean, was very choppy and had about
>>> 2 other boats on it. And there I was with a boat that I wasn't
>>> accelerating up to plane and stalled out a few times when tested a
>>> few days before. But nothing ventured nothing gained, right?
>>> First and foremost - it started right up, and ran well enough to
>>> take family members out for short little spins around in the
>>> whitecaps. Just getting to that point and being out there
>>> zipping around was a huge milestone for me.
>>>
>>> As far as the carb/ running thing......I ran it the whole time
>>> without the cowling on. It didn't completely fix things, but
>>> seemed to run a bit better. So air supply is a partial problem
>>> and will be easily fixed when I soon vent the cowling. (and
>>> clean the spark arrestor) Next, fortunately the throttle didn't
>>> completely bog when I would just move it slowly up in
>>> increments. I'd move it a little, take my hand off, and then
>>> let the engine sort of "catch up" to where the throttle was set,
>>> then move it some more, until eventually was cruising around at
>>> almost full speed. And the best part is the temp was always
>>> holding solid at 160-170. So FUN! My last boat was an
>>> '80 Glastron with a Johnson 110 outboard, and this '64 Deluxe
>>> seems to be faster and handle the chop a bit better - love
>>> that. So, even though it wasn't running tip top, it was enough
>>> to get by with and I was on cloud nine. Then of course doom had
>>> to strike. I was on my last run heading back towards the dock
>>> (fortunately) at almost full throttle when it started to sputter a
>>> little.........i instinctively glanced at the brand new temp gauge
>>> and it was pegged (somewhere over 250). Yet water was flowing
>>> through the hoses just fine. (I still have my clear hoses on
>>> from all the previous testing). Immediately shut it down.
>>> Felt the manifolds, top of water pump - things were hot, but
>>> nothing close to 250 degrees. Waited 2-3 minutes and then
>>> started it back up and went very slowly back to the ramp. It
>>> started right back up, nothing to weird with the way it ran. So
>>> hopefully I didn't do any permanent damage.
>>>
>>> So now I don't what is up. Turned the key on after it was cold,
>>> and temp gauge reads 0. All wires still connected in back.
>>> Guess I'll take it back out this week for some more testing and
>>> see if it climbs right up to hot, or holds at 160 for awhile and
>>> then jumps up to hot. No matter what, I am getting a temp gauge
>>> with a built in buzzer warning.
>>>
>>>
>>>
>>>
>>> On Jun 19, 2009, at 4:39 PM, Andy Perakes wrote:
>>>
>>>> Tuning a carb is more art than science. Since its already
>>>> running bad, you won't hurt anything by messing with it. Its
>>>> helpful if you keep track of the original positions in case you
>>>> get too far off and need a "known running" spot to return to:
>>>> It can be easy to lose count from where you started so I usually
>>>> run it all the way down, keeping careful count of the turns.
>>>> This gives you a reference point to work from. It can also be
>>>> helpful to know how many turns until the needle pops out so it
>>>> doesn't inadvertatently pop out unexpectedly and cause something
>>>> to get lost. Pulling it out gives you the change to inspect for
>>>> contamination, varnish build-up, etc. too. Just be careful you
>>>> don't lose the darn things -- tie a string on them if you have to.
>>>>
>>>>
>>>> ----- Original Message ----- From: "jd" <jdood@...>
>>>> To: <rees4@...>
>>>> Cc: "Evinrude & Johnson Boats of the 1960's and 70's" <omc-boats@...
>>>> >
>>>> Sent: Friday, June 19, 2009 6:14 PM
>>>> Subject: Re: [OMC-Boats] carb question....
>>>>
>>>>
>>>>> perfect - thanks! i'm printing this out and taking it with me
>>>>> out there.
>>>>>
>>>>>
>>>>> On Jun 19, 2009, at 1:30 PM, <rees4@...> wrote:
>>>>>
>>>>>> those are your idle mixture screws. i'm assuming you have a
>>>>>> 1970 2 bbl carb. if so screw each one in gently until they
>>>>>> stop on the needle seat. back them both out 1 1/2 turns. this
>>>>>> should get you close. run until your boat is fully warmed up
>>>>>> then one screw at a time turn the screw to the right slowly
>>>>>> till the engine just starts to hesitate and stall. next turn
>>>>>> it to the left until the fuel mixture is rich and the engine
>>>>>> starts to lope or run rough. then turn the screw to the right
>>>>>> until engine runs smooth.all this is done at idle. hope this
>>>>>> helps. if someone knows more i won't be offended if you chime
>>>>>> in.
>>>>>> ed
>>>>>> ---- jd <jdood@...> wrote:
>>>>>>> so no one knows and/or wants to take a crack at what the two
>>>>>>> adjusting
>>>>>>> screws under the carb actually do? would love to
>>>>>>> know......so i
>>>>>>> don't make things worse by guessing my way through.
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> OMC-Boats mailing list
>>>>>>> OMC-Boats@...
>>>>>>> http://lists.ultimate.com/mailman/listinfo/omc-boats
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> OMC-Boats mailing list
>>>>> OMC-Boats@...
>>>>> http://lists.ultimate.com/mailman/listinfo/omc-boats
>>>>
>>>> _______________________________________________
>>>> OMC-Boats mailing list
>>>> OMC-Boats@...
>>>> http://lists.ultimate.com/mailman/listinfo/omc-boats
>>>
>>> _______________________________________________
>>> OMC-Boats mailing list
>>> OMC-Boats@...
>>> http://lists.ultimate.com/mailman/listinfo/omc-boats
>>
>> _______________________________________________
>> OMC-Boats mailing list
>> OMC-Boats@...
>> http://lists.ultimate.com/mailman/listinfo/omc-boats
>
> _______________________________________________
> OMC-Boats mailing list
> OMC-Boats@...
> http://lists.ultimate.com/mailman/listinfo/omc-boats
Received on Tuesday, 23 June 2009