Thu, 18 Jun 1998 09:56:54 +0200
- Message No. 3424
From: Marc Luethi
Subject: Re: Fuel pump defect?
At 07:33 18.06.98 +0200, Marcello wrote:
>since a few weeks I sometimes have the problem, that my @ suddenly stops
>running, as if it were out of fuel. It stops first operating one cylinder
>and then stops the second one, too. Turning the fuel switch to reserve does
>not help. Usually I managed to restart the engine after a few minutes of
>waiting without problems and could proceed in riding.
Reserve? RD07 or younger, I presume...
>Now to my questions:
>
> - If the fuel pump is defect, is it true, that the bike runs without
> until 2/3 of the fuel in the tank is gone?
In my experience, the pump has no "open" state. If it's not operating,
no fuel at all is flowing through. But then again, it is an RD04 Pump
I am talking about.
But, assuming that the inactive pump lets fuel flow, then it is true that
the effective tank capacitiy is reduced, of course!
> - How can I test if the fuel pump is running?
Close the fuel taps, make sure there is some fuel left in the carbs.
Disconnect the fuel tubes from the filter and the tube up to the carbs
(so that just the two ~15cm tubes are connected to the pump).
Run the engine.
You should now be able to either hear a "plop-plop" Sound of ~2 plops/sec,
and you should be able to feel the pump "suck" on one of the tubes, check it
with your finger tips.
> - Is there the possibility, that the fuel pump is only sometimes defect
> and operates on other times?
Shure! worn contacts inside the pump, broken cable, broken relais (behind
the left
front light)-
>Has anyone experiences?
Read the (german) fuel pump story on my home page... An learn that a Pump
from a VFR750 RC36 very well fits into an XRV
Greets
Marc
--
marc@rrr.net YJ@IRC
http://zebra.fh-weingarten.de/~luethi
atic@gmx.net