OK, since you didn't see a fluid leak, the control pump must be putting out
too much fuel. Next, you'll have to beg, borrow or steal a voltmeter, and
put it on the 23 volt power supply output - any place you can get on the
violet #18 wire, probably on the throttle position sensor is the easy place.
If the 23 volts is within a half volt or so of nominal, I suspect the either
driver for the control fuel pump or the FPS has failed. You'll note that
one of the wires to the control fuel pump is ground, the other is a variable
voltage ranging from 0- to 12 volts, depending on fuel demand. If yours is
stuck up near 12 volts, either the driver has failed or your high resistance
FPS is fouling you up. Try unplugging the wire off the FPS and temporarily
putting a clip lead from the wire to ground AFTER the engine starts. If
this stops the flooding, you need a replacement FPS.
Otherwise, you have a bad power module. If you have a spare power module,
try switching it. If you don't, pull yours and send it to me, I'll take a
crack at repairing it for you (but don't be in a hurry!). Contact me
directly for mailing instructions at DickB@xxxxxxxxx
You can also contact one of the vendors on the IML list to see if you can
buy a spare power module. One place I'm pretty sure you can get one is
from Bob Baker at baker-michaels@xxxxxxx
I think Bob already responded to your original report of flooding with the
suggestion that you need a power module. Probably he was right all along.
Your FPS reading is somewhat high (but not outrageous), but since these are
so hard to find, I can only suggest that you test it as described above to
see if the flooding stops. If it does, then we are on a quest for a
replacement FPS.
I did find a substitute from Summit Racing a couple of years ago - if you
search the IML mailing list archives, you'll find the data on it. One of
my cars is still running with this substitute FPS - 3 years later (although
I have since sold the car - it's still running, in sunny Finland!).
Dick Benjamin
----- Original Message -----
From: "Leo Heligas" <llhelig@xxxxxxxxxxxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Monday, December 23, 2002 2:21 PM
Subject: Re: IML: Flooded '83 EFI
> Dick,
> Today, my son and I ran the car with the air cleaner lid off and are
unable
> to see any leaks in the fuel line plumbing. We were unable to remove the
tan
> wire from the socket so cut it and pput abullet connector in so we can do
> this when ever we want to. We also checked the fuel nozzles with the coil
> wire out and grounded and seems OK. We did notice that the plastic
covering
> on the connectors to the control pump and the FPS are nearly melted off
but
> still making contact. Apparantly had a small fire in there some time or
> other. Checked the FPS and got an ohms reading of 15.4 ohms. Did the
control
> pump check with the test light and seems OK. The light came on mementarily
> when cranking and turning on the key. Still starting hard and then floods
> itself after running very rough for a few seconds I wish I had some extra
> EFI parts I could try but they are few and far between out here in the
> boonies. The air cleaner lid is tight, has a good seal top and bottom and
> all vacuum hoses are in place. Any other ideas?
> Leo
> ----- Original Message -----
> From: "Dick Benjamin" <DickB@xxxxxxxxx>
> To: <mailing-list@xxxxxxxxxxxxxxxx>
> Sent: Monday, December 09, 2002 3:37 PM
> Subject: Re: IML: Flooded '83 EFI
>
>
> > My first, second and third guesses are all the same: You have a leak in
> the
> > fuel line plumbing from the Control Fuel Pump to the Fuel Pressure
Switch,
> > or from there to the nozzle regulator/fuel rail assembly. Do the "run
> the
> > car without the air cleaner lid on" trick and just look for where the
> liquid
> > fuel is leaking from - I'm sure you'll see it. Possibly the FPS has
> > developed a leak - it happens.
> >
> > Dick Benjamin
> > ----- Original Message -----
> > From: "Leo Heligas" <llhelig@xxxxxxxxxxxxxxxx>
> > To: "Imperial Club" <mailing-list@xxxxxxxxxxxxxxxx>
> > Sent: Monday, December 09, 2002 12:49 PM
> > Subject: IML: Flooded '83 EFI
> >
> >
> > Dick B & Bob H, & List
> > Two days ago, I was at my daughters for supper and upon leaving, my 83
> > refused to start, not even a peep! After getting out to kick the tires I
> > found it was flooded to the point I could smell raw gas very strongly.
The
> > next AM I went and disconnected the battery to reset the computer (such
as
> > it is) and made sure the air cleaner lid was tight and lo and behold, it
> > started immediately. However, later on it started to die at stop lights
> and
> > signs. Finally it again refused to start until I put the throttle on the
> > floor and then relalized it was flooded again. It would start and then
run
> > rough until the extra gas is gone, then flood itself (I think) while
> moving.
> > I finally ran the battery down enough to call AAA and tow her home.
Tried
> it
> > today and it starts fine then runs very rough, misses as tho several
plugs
> > were fouled? Dick B & Bob H; any ideas where to start?
> > Leo H '83 Still EFI!!!!!
> >
> >
> >
> >
> >
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