Re: [OMC-Boats] She let me down...

From: Justin DeSantis <duc1098desmo@...>
Date: Thu, 17 Sep 2009 23:10:18 -0400

Yup. Makes total sense. Idle drop procedure is what Honda calls it. Thanks.
So you adjust both of them the same? Turn one until it smooths out and picks
up RPM's then do the same to the other? Never saw a carb with 2 mixture
screws.

On Thu, Sep 17, 2009 at 10:40 PM, BLDFW <bldfw@...> wrote:

> Yes, talking about the two screws at the bottom of the carb. The don't
> control overall idle RPMs per se, the control the flow of fuel which can
> affect RPMs but is not the same as the screw on the linkage cam lobe.
>
> If you have it set too lean (IN) then it will be have as though it's
> starving for fuel (at idle or higher speeds). Out to far and it will run
> rich. Gotta find the best setting by sound. When it starts running smooth
> the RPM's will increase but can be turned down then with the linkage idle
> screw....if that makes sense.
>
> -Bill
> Dallas, TX
> 1970 Evinrude Explorer - 155 Buick V6 - OMC Sterndrive
> http://www.photobucket.com/evinrude_explorer
>
>
> --- On *Thu, 9/17/09, Justin DeSantis <duc1098desmo@...>* wrote:
>
>
> From: Justin DeSantis <duc1098desmo@...>
> Subject: Re: [OMC-Boats] She let me down...
> To: "Evinrude & Johnson Boats of the 1960's and 70's" <
> omc-boats@...>
> Date: Thursday, September 17, 2009, 8:25 PM
>
>
> It's not my first carb rebuild by FAR. I've done more motorcycle carbs than
> I can count. Just not many for cars or I/O boats. (Plenty on outboards
> though.) I'm still confused by what you guys are referring to as the idle
> adjustment screws. I think those are the mixture screws. And I realize I
> need to count how many turns out they are set. But that still leaves me with
> the actual idle adjustment screw and where to set it. Because it seems like
> if I set it too tight, it restricts the top butterfly from moving smoothly.
> I have such a hard time explaining this stuff. I wish one of you jokers
> lived local to me. Someone move to Pittsburgh already!
>
> Justin
>
>
>
> On Thu, Sep 17, 2009 at 9:03 PM, Andy Perakes <aperakes@...<http://mc/compose?to=aperakes@...>
> > wrote:
>
>> Before you pull the idle adjustment screws, count the number of turns it
>> takes to run them down to seat. This will give you another reference point
>> specific to your carb to go along with the 2.5 turn guidance provided by
>> Bill. Every piece has some degree of variance so I always like to know
>> values specific to my build. Even if its your first carb rebuild, you
>> should be able to knock it out in a few hours. Good luck.
>>
>> Andy
>> '67 Reveler 155
>>
>>
>> ----- Original Message -----
>> *From:* BLDFW <http://mc/compose?to=bldfw@...>
>> *To:* Evinrude & Johnson Boats of the 1960's and 70's<http://mc/compose?to=omc-boats@...>
>> *Sent:* Thursday, September 17, 2009 8:21 PM
>> *Subject:* Re: [OMC-Boats] She let me down...
>>
>> If your kit was like mine, the instructions has a section that
>> identifies various makes of boats and their applicable settings and
>> measurements.
>>
>> Something to be aware of, when I did mine, I discovered the previous owner
>> installed the accelerator pump and the other related ball bearings in
>> reverse putting the LARGE bearing into the accelerator pump hole instead of
>> the small one. It's wedge permanently in place reducing it's
>> effectiveness. I'm on the hunt for another 2G carb so I can have it fully
>> functioning. It doesn't seem to affect performance at the moment (when it
>> peforms good) but I want to know that it's fully functional! Anyway, my
>> point is to be sure to put the smaller of the two bearings in the
>> accelerator pump outlet.
>>
>> The other thing to be aware of is to run the idle adjustment screws in and
>> them back them out about 2.5 turns. I backed mine out 2 turns and found it
>> wasn't quite enough. That will totally be a subjective setting based on how
>> well it idles.
>>
>> Keep us posted!
>>
>> -Bill
>> Dallas, TX
>> 1970 Evinrude Explorer - 155 Buick V6 - OMC Sterndrive
>> http://www.photobucket.com/evinrude_explorer
>>
>> ** <http://forumdisplay.php?f=21>
>>
>>
>>
>> --- On *Thu, 9/17/09, Justin DeSantis <duc1098desmo@...<http://mc/compose?to=duc1098desmo@...>
>> >* wrote:
>>
>>
>> From: Justin DeSantis <duc1098desmo@...<http://mc/compose?to=duc1098desmo@...>
>> >
>> Subject: Re: [OMC-Boats] She let me down...
>> To: "Evinrude & Johnson Boats of the 1960's and 70's" <
>> omc-boats@...<http://mc/compose?to=omc-boats@...mate.com>
>> >
>> Date: Thursday, September 17, 2009, 4:58 PM
>>
>> Well, the patient is laying open on the operating table and I think I
>> found the problem. Or, problems, rather. First, the float is full of
>> gas. I found 3 tiny cracks in it. I have a hard time believing it
>> happened all at once, so I figure it's been slowly filling with gas a
>> bit at a time. Also found the rubber gasket on the accelerator pump
>> was ripped. So that probably wasn't helping either. I had to order a
>> rebuild kit, it will be here tomorrow. The float was no longer
>> available from the parts store. So I'm going to solder the cracks
>> closed, I've had success with it in the past.
>>
>> I need a HUGE favor from someone. My service manual still isn't here.
>> I'm going to email the guy I bought it from, but thats a different
>> story. Anyhow, there are a few screws and adjustments on this carb
>> that I'm unfamiliar with. One being the adjustment screw on the port
>> side, towards the rear. The linage for the choke seems to bump against
>> it. If that makes sense. Anyhow, would anyone be willing to scan me
>> the pages that pertain to carb set-up and default setting from the
>> manual? I'd be happy to pay a few bucks for your trouble. Normally,
>> I'd just figure it out myself, but we have plans to use the boat
>> Saturday and that hinges on me being able to get it back together
>> tomorrow afternoon. Anyone want to take pity on me and help me with my
>> Johnson? (That doesn't sound good...)
>>
>> PS, my auto mechanic friend might have a service manual for the 67
>> Buicks. Would the carb section from the car manual be of any help?
>>
>>
>>
>> On Thu, Sep 17, 2009 at 11:50 AM, Nexi <ohnoitsnexi@...<http://mc/compose?to=ohnoitsnexi@...>>
>> wrote:
>> > I have a similar problem. The best guess is the float. Don't have my
>> service
>> > manual yet so I'm interested to hear your findings.
>> >
>> > If the carbs are just dirty I'd try running some Sea Foam through and
>> see if
>> > that clears things up a bit.
>> >
>> > ________________________________
>> > From: Justin DeSantis <duc1098desmo@...<http://mc/compose?to=duc1098desmo@...>
>> >
>> > To: Evinrude & Johnson Boats of the 1960's and 70's
>> > <omc-boats@...<http://mc/compose?to=omc-boats@...ltimate.com>
>> >
>> > Sent: Thursday, September 17, 2009 11:21:09 AM
>> > Subject: Re: [OMC-Boats] She let me down...
>> >
>> > I hope not. I really don't want to have to lay out anymore money right
>> > now, even if it's not much. I'm going out now to take a look. I'll
>> > report back with my findings. Thanks guys.
>> >
>> > On Thu, Sep 17, 2009 at 10:43 AM, Scott Veazie <scottveazie@...m<http://mc/compose?to=scottveazie@...>
>> >
>> > wrote:
>> >> Hey Justin,
>> >>
>> >> Time for a carb rebuilt. It's really easy on those two barrel carbs
>> >> though,
>> >> so you should be back up and running in no time!
>> >>
>> >> ~Scott
>> >>
>> >>> Date: Wed, 16 Sep 2009 22:14:52 -0400
>> >>> From: duc1098desmo@...<http://mc/compose?to=duc1098desmo@...il.com>
>> >>> To: omc-boats@...<http://mc/compose?to=omc-boats@...sts.ultimate.com>
>> >>> Subject: [OMC-Boats] She let me down...
>> >>>
>> >>> So I pull the old Surfer to the ramp today, get her down in the water.
>> >>> Hit the key and she fires right up. Runs a few seconds and flat dies.
>> >>> Repeated tries failed to fire it back up again. It just wouldn't
>> >>> start. Plenty of juice. Had the engine cover up, and noticed it
>> >>> smelled of gas. Went back and looked, the entire intake manifold was
>> >>> wet with gas. Took the air cleaner cover off and watch the carb as I
>> >>> cranked it over. It's shooting a lot of gas. Actually, looks like it's
>> >>> shooting more gas than it should while cranking. It was dark by the
>> >>> time I got it home so I haven't messed with it yet. Tomorrow I'll look
>> >>> into it further. I'll gladly accept any suggestions of things to look
>> >>> at tomorrow.
>> >>>
>> >>> Good thing I'm laid off. I don't know how people with boats have jobs.
>> >>> There's always something to do to a boat. Who has time to work.
>> >>> _______________________________________________
>> >>> OMC-Boats mailing list
>> >>> OMC-Boats@...<http://mc/compose?to=OMC-Boats@...ultimate.com>
>> >>> http://lists.ultimate.com/mailman/listinfo/omc-boats
>> >>
>> >> ________________________________
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Received on Thursday, 17 September 2009

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