|
Gentlemen, thankyou for your input. I talked
with Bob White tonight and he thought that the #1 primary injector may be
sticking open and letting the fuel run and keeping the engine running. Try
doing that on a recip engine and see how long the muffler lasts. Not sure
how to check for this condition, as when it finally stops, I turn on the
LP pumps and start the engine so the pressure on fuel injection doesn't bled to
zero, putting the fuel into the standing engine, then I let the fuel burn out of
the carb until it quits. In a few minutes it will start and run normal
again and will stop when you turn off the injectors and as it gets hot again it
repeats the cycle.
Does anyone know of a reasonable substitute for
Mazda injectors, their price is quit steep.
I can plug the
fuel line to carb, but I don't believe that after 7 hours of running that gas
would start siphoning up to the carb and with the fuel pump and injectors off it
keeps running until the fuel pressure gets down to 17#'s before it quits.
The fuel pressure is holding a steady 41 pounds when the engine is running
normally. JohnD
Sent: Friday, September 18, 2009 4:57
PM
Subject: [FlyRotary] Re: Mixture
Condition
With such an odd assortment of symptoms I suspect that you may
have more than one problem. This is the hardest situation to diagnose
because fixing any one thing will not make it right, only change the
symptoms.
If there IS a single problem, it is to be found by finding
what makes the engine run with all injectors disabled. This can't
happen unless there is a major problem somewhere. I would suggest fixing
this first.
Tracy Crook
On Fri, Sep 18, 2009 at 1:08 PM, John <downing.j@sbcglobal.net>
wrote:
I have narrowed the mixture condition down to
the fact that when it starts to miss up I can keep it running poorly by
turning the mixture control down to minimum, but if I turn off the primary
injectors switch the engine appears to run okay, the secondary
injector switch doesn't seem to make any difference in the way it runs at
4000 rpm or idle. The injector switches as well as the wiring harness
I purchased from Bob and all wires are soldered and covered with heat
shrink. I checked the best I can with a light and mirror and
everything looks okey under the panel. It runs the same, rather in
mode A or B. On rereading the instructions I see that the coil disable
can only be checked in mode B, so I haven't done that yet.
I turned of the fuel pump and with the injector
switch's off the engine continued to run until the fuel press was down to 17
pds. and quit. I turned on the fuel pump (LP) to the Weber and it
started immediatly. This condition started at 7.2 on the hour
meter. I really now don't have any idea where to start looking for the
problem. JohnD
|