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Display Mesage #95388


Engine cutting out--AGAIN
Written by motorcyclema... on 7/28/2010 at 09:04 pm

Juan wrote:

> This also happens when the fuel tank is not venting properly to
> atmosphere. The pump creates a vacuum in the tank causing the same
> effect. Once the tank equalizes then fuel flows normally again.
>
> This is easy to check. When this happens again, stop immediately and
> remove the fuel cap. If there is a sudden inrush of air you know you had > a
partial vacuum in there and that the fuel tank venting system is not
> working properly.

What he said. <g>

The Tupperware Dragon rode perfectly until I took it into the shop for the 24K
service. After I got it back, it started being REALLY hard to start, and would
occasionally just die at speed.

I had to take it back to the mechanic for them to finish a few last redos (I now
have an auxiliary plug in the glove box and some metal under the plastic tank
? need more, but it semi keeps my tank bag on) and I mentioned it to them.

Just after getting it back, I headed for Raton, NM, and it did it again. So,
knowing there is a Honda shop here, I rolled in, described the problem and the
mechanic said it sounded like a fuel venting problem. He walked outside to the
bike, had me open the cap, and "whoosh!"

Now, being that PCs are unusual in NM, and probably even more so in Raton, he
started looking for a crimped hose. After reading the manual, he said the fuel
cap is supposed to be self-venting, and he designed a bypass since it didn't
seem to be working.

My questions are:

Is the cap self-venting, and do they just go out or is there something else I
should look at? (I haven't ridden the Dragon since it was fixed except to get to
a friend's house. I'm hoping to head out tomorrow for the HIghway of Legends.)

I now know I can make it back to Roswell by just opening the cap, but if I need
to buy a new cap, I will do that.

Thanks!

KAB
Roswell, NM

?Never underestimate the power of blind faith. It can manifest in ways that
bend the laws of physics or break them entirely.? "True Blood," Aug. 30, 2009

Message Thread for message #95388

emmettmarrone
7/26/2010, 08:19 am
Engine cutting out--AGAIN
Hi again, I drove to work last night and while running at about 5k rpm it happened again, twice. I was able to recover the engine by pulling in the clutch, letting the engine slow down for 5-8 seconds then revving the engine three short revs

    douglasvanb
    7/27/2010, 06:36 am
    Engine cutting out--AGAIN
    That sounds so much like what is happening with mine but without a steep hill being involved. I'm interested to learn what you find as the source of the problem. Cheers, Douglas --- In

    pgboyd
    7/27/2010, 10:21 am
    Engine cutting out--AGAIN
    Emmett, I don't recall what has already been recommended but some things to consider: Sidestand switch may be cutting out on you sporadically. Easy to check and replace if that is the problem. Bad fuel or tank trash may have some s

    wkaufmann2000
    7/27/2010, 05:39 pm
    Engine cutting out--AGAIN
    My bet is that it has something to do with the engine getting short of fuel when being revved that high. I think it needs more fuel than the fuel system (fuel filter/pump/petcock/carb) is able to deliver when the throttle is opened wide...

      gibinmich
      7/27/2010, 06:27 pm
      Engine cutting out--AGAIN
      I think Wolfgang hit the nail on the head. Its starving for gas, but because of what? The fuel filter and petcock would be the easiest things to check first. Just curious, how many miles on the bike? --- In

        obijuanak
        7/27/2010, 06:41 pm
        Engine cutting out--AGAIN
        On Jul 27, 2010, at 10:27 , Gib wrote: > I think Wolfgang hit the nail on the head. Its starving for gas, but because of what? The fuel filter and petcock would be the easiest things to check first. Just curious, how many miles on

    radamec123
    7/27/2010, 06:47 pm
    Engine cutting out--AGAIN
    Hi, I'm wondering if you have issues with your gas cap? Do you notice when you go to get gas that there's a lot of air suction when you take the cap off? There's supposed to be some type of venting, etc., and I'm not sure what that inc

    blitzzingers
    7/28/2010, 02:17 am
    Engine cutting out--AGAIN
    Emmett, I had this same problem this past spring. It is your Fuel petcock . you will have to remove your top shelter to get to it. the quick fix that many have done it to replace the petcock with a Tee. you can get one at you local auto su

      pc800dork
      7/28/2010, 03:14 am
      Engine cutting out--AGAIN
      That's weird. I have had the Tee-mod on my bike since shortly after I got it and don't recall ever really having a backfire except once when I started it. I noticed no change whatsoever in running the Tee. Can you describe how the Tee mig

      emmettmarrone
      7/28/2010, 05:55 am
      Engine cutting out--AGAIN
      First I'd like to thank all those who replied. I looked at all the suggestions and did the following. The oil needed changinf so did that with Delvac15/40 and new Honda filter, then I took off the shelter and cleaned and re-oiled my K&N a

    motorcyclema...
    7/28/2010, 09:04 pm
    Engine cutting out--AGAIN
    Juan wrote: > This also happens when the fuel tank is not venting properly to > atmosphere. The pump creates a vacuum in the tank causing the same > effect. Once the tank equalizes then fuel flows normally again. > >