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Display Mesage #100631


Fuel smell source
Written by mlmiller1959 on 2/10/2011 at 09:42 pm

I'm going to pay attention to this thread. I, too, eliminated the gas cap as a
source and can't find a sign of any sort of leak at the petcock I'm still
assuming mine is/are the carb boots.


________________________________
From: douglasvanb <douglas.vanbossuyt@...>
To: ipcrc@yahoogroups.com
Sent: Thursday, February 10, 2011 3:28 PM
Subject: PC800: Re: Fuel smell source

Hi Stan,

Does it look like a demented Christmas tree? Is it between and behind the
carbs? If so, you might have something wrong in the carbs (torn diaphragm,
leaking stuff in the float bowls, etc). I recall it being discussed on here
sometime in the last six months... Others I'm sure have better memories on here
than me.

Cheers,

Douglas

--- In ipcrc@yahoogroups.com, "STANLEY" <stanwalton@...> wrote:
>
> Hello,
>
> Several people offered information conscerning the source of fuel smell on my
PC800 (1997 model-16Kmiles).
> I've checked the petcock (I've a re-build kit on order), tightened the screws
but detected no leak or odor..
>
> After changing the air filter, I discovered a connection that appears to be
the source of the leak.. I have a picture but I don't know where to post it..
>
> If anyone has knowledge about this subject, and if you would tell me where to
send the picture, it would be most helpful if you could comment on the
function/nature of this plastic tube.
>
> Refering to my Honda shop manual(page 5-6 of the 1989-1998 copy), I can not
find the name or function of the part which appears to be part of the vacuum
system. It is approximately 3/8 inch in diameter and black plastic tube.. It has
oil/fuel residue on the surface.
>
> Please pardon the unprofessional description.
>
> Thanks,
> Stan
>



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Message Thread for message #100631

stanwalton...
2/10/2011, 09:16 pm		Fuel smell source
Hello, Several people offered information conscerning the source of fuel smell on my PC800 (1997 model-16Kmiles). I've checked the petcock (I've a re-build kit on order), tightened the screws but detected no leak or odor.. After

    		douglasvanb
    2/10/2011, 09:28 pm    		Fuel smell source
    Hi Stan, Does it look like a demented Christmas tree? Is it between and behind the carbs? If so, you might have something wrong in the carbs (torn diaphragm, leaking stuff in the float bowls, etc). I recall it being discussed on here s

    		mlmiller1959
    2/10/2011, 09:42 pm    		Fuel smell source
    I'm going to pay attention to this thread. I, too, eliminated the gas cap as a source and can't find a sign of any sort of leak at the petcock I'm still assuming mine is/are the carb boots. ________________________________ From: do

      		c172myp51
      2/10/2011, 10:03 pm      		Fuel smell source
      Mine is definitely getting stinkier. Changed the petcock to a brass T & that didn't help. -Scott > I'm going to pay attention to this thread.

        		mfmarkart
        2/14/2011, 02:51 pm        		Fuel smell source
        My stinks when you park it too. I have changed the petcock to a brass T. I replaced the carb boots and rebuilt the carbs (no diaphragms)when I replaced the cam seals. No leaks that I can find anywhere, carbs have been sync'ed. Runs good, gas

          		gibinmich
          2/14/2011, 03:42 pm          		Fuel smell source
          Same here, I think it may be coming from the air cleaner box. --- In ipcrc@yahoogroups.com, "Mark" <mfmarkart@.

            		dan.weitzel
            2/15/2011, 06:58 pm            		Fuel smell source
            I second this idea! I have the same situation, no leaks, good mileage & normal operations. When you shut down there must be some unburnt gas that either gases off thru the airbox or pumps thru the muffler on the last few revs when no spark

              		alfr4d
              2/16/2011, 12:42 pm              		Fuel smell source
              There must be more unburned fuel after parking when the air filter is not letting enough air through. A reason for the engine to run too rich. I will put in the old one, that dried for over a year and looks so much better now. Alfred ---

                		mfmarkart
                2/16/2011, 01:30 pm                		Fuel smell source
                Maybe the K&N filter is the common denominator. I'm running one and have the fuel smell, anybody else? --- In ipcrc@ya

                  		c172myp51
                  2/16/2011, 01:42 pm                  		Fuel smell source
                  Honda AF. But it gets real dirty, quickly. --- In ipcrc@yahoogroups.com, "Mark" <mfmarkart@...> wrote:

                  		wbpc800
                  2/16/2011, 04:47 pm                  		Fuel smell source
                  I have the K&N and have the smell as well. Not all the time and not bad enough for me to care but it is there. Wade --- In

                    		mlmiller1959
                    2/19/2011, 08:02 pm                    		Fuel smell source
                    I opened mine and found that it has a K&N as well. Not very dirty but pretty old. Sure would be an easy fix if replacing it was all I needed to do. --- In

                      		rudyg1937
                      2/19/2011, 08:58 pm                      		Fuel smell source
                      I have been watching this thread with some interest. I am sure it is not the K&N. By the way a slightly dirty K&N is supposed to filter better than a new one. Read their propaganda, er, I mean ads (I run them). Every PC I have had had

                        		c172myp51
                        2/19/2011, 10:27 pm                        		Fuel smell source
                        Rudy, that makes a LOT of sense! I've been getting the smell a lot lately, and I've been topping off the fuel in an already warmed up bike after each ride - then putting it in an enclosed shed. Your story might just be the answer to why we ge

                        		gibinmich
                        2/20/2011, 03:21 am                        		Fuel smell source
                        I agree with Rudy. I've said the same thing in the past about the carbs cooking from all the heat. --- In ipcrc@yahoogr

                  		dan.weitzel
                  2/17/2011, 02:20 pm                  		Fuel smell source
                  PO did the "car" air filter conversion on my PC. Don't know how that would compare with the stock or K&N. Houston Dan --- In

                    		goldwingman40
                    2/17/2011, 02:59 pm                    		Fuel smell source
                    Dan, If he sealed it up good to the filter frame it would be very close to the stock, it might pass slightly more air because of the more filter surface area. I have been running one for the past 4 years and they work good. I have 2 frames so

    		pgboyd
    2/11/2011, 11:22 am    		Fuel smell source
    Stan, Navigate to the Photo Album you created here on the forum, then at the right top of your screen select Add Photo - then click on the Select Files icon bar. You'll see the familiar Windows file selection pop-up and should be able to

      		stanwalton...
      2/11/2011, 08:02 pm      		Fuel smell source
      Hello, I've just posted a photo on the photo section of the forum relating to the discription of the "fuel smell source" in my original post.. I hope this sheds light on the question posed.. The smal picture insert at the

        		douglasvanb
        2/11/2011, 08:15 pm        		Fuel smell source
        Hi Stan, Yup, that's the Christmas tree thing. Something in your carbs probably isn't right. In the files section there is a guide to rebuilding/servicing carbs. Try doing a tear-down and look for pin-holes or cracks/tears in the various

          		gibinmich
          2/12/2011, 12:36 am          		Fuel smell source
          How does your bike run? Good or bad? Hows the gas mileage? --- In ipcrc@yahoogroups.com, "douglasvanb" <d

            		gibinmich
            2/12/2011, 12:41 am            		Fuel smell source
            My bike has a occasional stink. It runs good and gets good mileage. I can't find a leak anywhere? Changed to a tee and still stinks. Read post #72322, maybe that will help? --- In

            		stanwalton...
            2/12/2011, 01:37 am            		Fuel smell source
            Thanks to all for the input. Bike starts and runs very well.. On rapid opening of the throttle to wide open, it will bog down, but if with quick rotation, on and off of the throttle, it will gain RPM. This condition lessens as it warms up

              		goldwingman40
              2/12/2011, 01:50 am              		Fuel smell source
              Stan, Try a couple of tanks of gas with about 2.8 ounces of Chevron Techron in them and if you can't get gas without ethanol add 3/8 ounce StaBil Marine to every tank full and see if that doesn't help. It sure has been cold this winter here

              		david_a_fugl...
              2/13/2011, 11:54 pm              		Fuel smell source
              Stan, Just one more thing. The PC is the first bike I have owned that starts so much better when warm if I give it just a little bit of throttle. Without a slight twist of the throttle it will not fire right up. That is actually the start