CIS Problem?

[Geraint Lloyd]

the best way to test fuel supply problems on the k-jet
system is to ' 
make ' a fuel pump switch.
mine has 2 * 8 foot bits of wire connected to a
household  light switch 
in a box. the other end has 2 spade connectors that
plug into the pump 
supply connectors in the fuse box (with the fuel pump
relay removed). 
that way you can turn the ignition on and fire the
pump without cranking 
the engine.
I don't know where your relay is, but on the golf 2
it's under the dash 
in the driver's footwell, hence the 8 feet of cable so
i can play with 
the injector bits in the engine bay and fire the pump
at without moving.

also with this tool, you reduce the chance of an
explosion or fire due 
to the combination of fuel, air and sparks.
if you have sludge in the tank / on the old pump, then
you should maybe 
try replacing the filter canister.
or at least crack the fuel lines to the filter with
the pump running and 
see if you get more out  of one side than the other.
the filters are quite fine and clog easily.

dumb question, but i remeber bosch reduced the number
of different pumps 
that they sold at one point.
this meant that you would sometimes have to re-do the
connections to the 
pump and maybe get it running backwards.
you have the pump running the right way do you?


the injectors should have some residual pressure, but
only really start 
to heave fuel out when you lift the plate up.
try taking the rubber hose of the top of the airflow
sensor box and  
lift the plate up with the pump running.

the supply and return lines are some times colour
coded (black = suply 
and blue = return)
also, there is a little arrow/triangle cast into the
metering head where 
the supply and return lines connect telling you what
is what.

if you crack the supply line a bit, then fire the
pump, then you should 
have fuel spraying everywhere.

if you can find (or have got) the cold start injector,
that's electric, 
so gets fuel all of the time even with the flap down.
the injector is 
controlled by the thermo-time switch in the water
jacket ( probably in 
the back of the head). so cracking the fuel line to
this injector will 
produce fuel at system pressure with the pump running.

geraint

L DC wrote:
> Hi All!!
>
> I replaced the fuel pump on my '86 5KTQ with a brand
> new one, Peirburg, this weekend. R&R was failry
easy,
> except for the gas odor.
>
> Anyway, the car did not start.
>
> CIS/fuel distributor problem?
>
> I disconnected the #1 and #2 fuel lines at the
> distributor and there was evidence of gas, but when
my
> friend turned the ignition key to the on position or
> while cranking nothing happend---gas was not spray
as
> I thought it would.
>
> I then disconnected what I thought was the main fuel
> line to the distributor but later found out to be
the
> return line instead. While cranking, this return
line
> gushed quite a bit of fuel.
>
> As for the two injector lines, nothing, except when
> key was off, after each try, fuel would spew out
> slowly but steady with very, very tiny bubbles.
>
> Is the fuel distributor and or fuel lines clogged?
>
> Sensor plate stuck?
>
> Bad fuel accumulator?
>
> Bad warm-up regulator/ cold start valve?
>
> I put some 4 gallons of new premium fuel, which
mixed
> with some fuel I had placed in about 2 months ago. I
> took as much as I could out of that 2 month-old fuel
> since it smelled like varnish.
>
> I'm able to start the car with starting fluid and
then
> dies as soon as it runs out of it. Therefore, I got
> spark and timing is also right on.
>
> Again, fuel pump is brand new and I'm getting power
to
> the fuel pump, although, I did not check for how
much
> voltage is getting (fuel pump). Therefore, fuel
relay
> can be ruled out, I guess.
>
> The previous pump it had was working fine before it
> sat for about 8 months, but for sure was dead when I
> checked it after removing it this weekend. Covered
by
> a film of stick crude.
>
> Thanks for your help in advance.
>
> -Louis
>
>
>
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>   

-- 
Geraint Lloyd MPhil, BSc (hons)
VP Exploration

Gastem Inc,
1155 Rue university, Bureau 805,
Montréal
Québec
H3B 3A7
CANADA

Tel:   1 514 875 9034
Cell:  1 514 690 4747
Fax:   1 514 878 3041


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