Re: More strange engine problems - Chris

Hi Chris, This is a wonderful find. I had no idea about some of the things this carb did, very interesting reading. I will post this on my web site for others. Thank you, Allen On Wed, May 19, 2010 at 12:47 PM, Chris Martin <no… [at] yahoo.com> wrote: > Allen > > I found this manual that should be helpful in carb tuning. > > http://www.antiquefarming.com/PDF/carburetor.pdf > > Chris > > ------------------------------ > *From:* Allen Edwards <al… [at] PaloAltoPhoto.com> > *To:* Ca… [at] yahoogroups.com > *Sent:* Wed, May 19, 2010 2:58:50 PM > *Subject:* Re: [Cal_Boats] More strange engine problems > > > > I was just told that the adjustment should be out 2-3 turns so perhaps I > screwed up when I rebuilt it. In any event, the adjustment procedure was to > screw it in until it starts to kill and back off 1/4 turn. If I have a bad > washer on the seat and there is a leak there, I guess I can compensate by > adjusting the mixture screw... This should be done with new plugs. > > If anyone knows more about these carbs, please feel free to let me know > what you think. > > Allen > > > On Wed, May 19, 2010 at 11:45 AM, Allen Edwards <allen.p.edwards@ > gmail.com <al… [at] gmail.com>> wrote: > >> I love getting more things to check, really I mean it. I think I will >> list some of the things I have checked: >> 1) Voltage at the coil is 12.55. Remember, no voltage regulator for the >> moment so this is a good reading >> 2) Plug wires look new and are relatively new >> 3) No vacuum lines on this engine >> 4) I would guess there is exhaust in there somewhere but I can't see it >> for all the water. I guess this means the air fuel ratio is above some >> magic number which would be very rich indeed where the exhaust is black >> soot. >> >> Things I will check >> 1) Spark timing >> 2) Wiring to the coil check for intermittent connection. >> 3) New plugs and hopefully someone will tell me a good way to set the >> mixture, which was my question. >> >> Allen >> >> >> On Wed, May 19, 2010 at 10:06 AM, mike <mike@wahini. org<mi… [at] wahini.org> >> > wrote: >> >>> >>> >>> Allen, >>> If you are seeing only water from your exhaust and not different colors >>> of smoke, then maybe your plugs were black from before the carb was rebuilt >>> and they are very old. If that is the case, quit messing with the carb and >>> check for vacuum leaks, loose or cracked spark plug wires (to include the >>> boots). Check the wire terminals at your distributor to make sure they >>> aren't corroded or making a bad connection You may have good voltage at the >>> battery, but a corroded terminal can cause all sorts of weird problems. >>> Insufficient spark voltage could also be a cause for black plugs. (I know >>> you've been through the points, etc., but how about the ballast resistor, if >>> you have one? Check those wires too. Good contact with the condenser? Maybe >>> it vibrated loose. Who knows?) I'm curious how it goes.... >>> Mike >>> >>> >>> On 5/19/2010 11:49 AM, Allen Edwards wrote: >>> >>> >>> >>> Thanks for the reply, >>> >>> I guess what is bothering me is that I thought the fast mixture screw >>> should be out 2 to 3 turns and I have it out only 1 3/4 yet the engine is >>> obviously running extremely rich. By the way, when I look at the exhaust, >>> all I see is water :-) >>> >>> Allen >>> >>> >> > >