1977 Silver Shadow II
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Jim

Malmö, Sweden

#1 Aug 20, 2010
Fuel pump for a 1977 Silver Shadow II

Hello, I have a Rolls Royce Silver Shadow II 1977 with, as I understand, a twin pump that sits a short distance in from the right rear tire seen. The problem I have is that it does not seem to work. Last year the car was started after standing still for approximately seven years in a heated garage. The car would not start at the beginning, after many attempts. Got the tip to buy a battery with more amp-hours which solved the problem and the petrol pump started to buzz when the key was on the RUN. When I later turned to its starting position, then pull the starter, the car started running. I then drove the car to two weddings which worked great except that the idle was too low at times when the engine stopped the instance. red light. Got to run some with the left foot on the brake and right on the gas while braking into a longer distance and the engine went into the yard, not really easy. Have long suspected that the petrol pump is not able to send up the petrol. Have noticed that it is only occasionally I can hear the petrol pump after I put the key in RUN mode. Most recently when I started the car th petrol pump worked maybe after 7-8 tests when turning the key. Then it was a gurgling sound and it sounded like it was uneven. We got the car under its own power out of the garage with some engine failure but after about 200-300m it just stopped. Now it wont start at all. The starter motor works well and the car sounds alert except that it does not start, of course. We have two paralell 12V 95Ah batteries in order to assure ourselves that there is power on the battery. Even tried a little tap on the petrol pump to no avail. Checked fuses. Have also suspect that there might be problems with voltage up to the pump. I would be very grateful if anyone knows how I should proceed or have any tips. And maybe if the pump is broken, were do I get a new one, and can I install this myself if I am reasonably handy. Do I have lack of power to the pump.
PS. Can you tow the car in neutral without the gearbox taking the rap. What to consider when towing.

Ps. Excuse my bad English

Expectant greetings
Jim
Sweden
mark Maine

Lancaster, NH

#2 Oct 3, 2010
the shadow has two fuel pumps in parallel, so if one fails you won't notice anything. but when number 2 fails the car will run out of gas. I occasionaly have a mechanic test the pumps by disconnecting the output fuel lines from the pumps
one at a time a check if they are both working.

The pumps are easy to remove, the only problem is the car has to be lifted to get at them

Mark, Maine Silver Shadow SRA12682
Jan Forrest

Rotherham, UK

#3 Oct 9, 2010
I've responded on the same subject here
http://www.topix.com/forum/autos/rolls-royce/...
ramiro

Los Angeles, CA

#4 Mar 23, 2013
hi im have rolls Royce silver shadow 1976 so i stared the car but the pump not start AI don't know whats wrong shi need the condenser for work or not please somebody help me
Jan Forrest

Rotherham, UK

#5 Mar 24, 2013
Please follow the link in my previous posting. It includes more information about the fuel pump(s) and why they may not feed fuel to the engine.

A copy of 'The Shadow Owner's Companion' by Jon J Waples is always useful for the DIY Shadow enthusiast.
Craig

UK

#6 Jul 26, 2013
my 1980 shadow 2 is blowing fuses for the gauges and warning lights on the dash any ideas where to start trying to solve the problem?
Jan Forrest

Rotherham, UK

#7 Aug 2, 2013
Have you done any work on any of the car's electrics lately? Fitted a new radio, etc? Started to use anything powered by the cig lighter?
Craig

UK

#8 Aug 18, 2013
Jan Forrest wrote:
Have you done any work on any of the car's electrics lately? Fitted a new radio, etc? Started to use anything powered by the cig lighter?
hi Jan, thanks for the info managed to get a classic car auto electrician to look at the car , resolved in 15 minutes a trapped wire behind the dash PHEW!!.
thank heavens ther are a few OLD SCHOOL electricians left!!
Joey

Toronto, Canada

#9 Apr 18, 2014
my 1978 Rolls Silver Shadow II trunk will NOT lock. no activity at the locking mechanism. Does the Rolls SS II trunk work as a Mercedes ? in that it sucks the trunk down into the lock position ? I can roll the gear system, but the trunk will not engage and lock. Any ideas how to get the trunk lock to work ? Many thanks
Jan Forrest

Rotherham, UK

#10 Apr 19, 2014
No, the SS2 doesn't work the same way as the Merc. What can happen is that the locking pawl can be moved into the locked position while the trunk lid is open so that the lid catch just bounces off it. The cure is to locate the little lever that opens it up again. A few drops of light machine oil or even WD40 can get things moving again.
rosalesrudy

Altoona, AL

#11 Aug 14, 2014
mark Maine wrote:
the shadow has two fuel pumps in parallel, so if one fails you won't notice anything. but when number 2 fails the car will run out of gas. I occasionaly have a mechanic test the pumps by disconnecting the output fuel lines from the pumps
one at a time a check if they are both working.
The pumps are easy to remove, the only problem is the car has to be lifted to get at them
Mark, Maine Silver Shadow SRA12682
Where can I get this fuel pump or 1 similar to it. For RD silver shadow 2 1977
rosalesrudy

Altoona, AL

#12 Aug 14, 2014
rosalesrudy wrote:
<quoted text>
Where can I get this fuel pump or 1 similar to it. For RD silver shadow 2 1977
Rolls royce
Jan Forrest

Rotherham, UK

#13 Aug 15, 2014
I don't know about spare parts suppliers outside the UK, but here in Blighty we usually end up here

http://www.flyingspares.com

as do a lot of owners from other countries.

On the Shadow 1 the twin pump is located about half way along the chassis, but closer to the rear axle on the Shadow 2. I'm not aware that any special tools are required, but lifting the car (axle stands are safer than a jack) makes access easier.

The usual cause of total failure of these units is excessive wear of the points on each side - very much like the points inside a mechanical distributor - and the cure is the same. Replace them. The points are available from the same source.

Since: Aug 14

Tucker, GA

#14 Aug 16, 2014
Do you know how many gallons per hour the fuel pump is for the silver shadow 2 ? Or a fuel pump that will work with it?
Jan Forrest

Rotherham, UK

#15 Aug 17, 2014
There are newer, electronic pumps available that are a simple replacement for the Rolls' SU twin unit, but none on other cars (at least affordable ones) that can cope with the 24 US gallons/hour that the original twin units can deliver.

Both "Facet" and "Burlen" make a direct replacement for the SU unit, but they're hardly cheap! Also there have been tales of lack of longevity/early failure of some of these aftermarket pumps.

As I previously put it: If the pump starts to operate again after a moderate thump with a WOODEN tool (shaft of a hammer) then all you need is two points overhaul kits.

In descending order of cost your options are:

1) Facet or Burden complete unit - Not sure, but well over GBP500
2) Original SU complete unit - GBP420
3) Electronic SU complete unit - GBP330
4) 2 of complete overhaul kits - GBP60 each
5) 2 of points replacement kits - GBP18 each

All the above prices include local taxes, but not S&H. Only you know how much you are willing to invest in the fuel system to get it working again.

Please note that most (if not all) of the currently available pump units may need some modification of the fuel lines to accomodate the slight differences in the way they attach to the pump.
nebosia

Athens, Greece

#16 May 6, 2015
What can be problem when when the fuel pump reasive the electrycity but dont work shadow 1970
Jean-Pierre

Mobile, AL

#17 Jun 26, 2015
I have a 77 Siler Cloud that lost power to ignition switch, lights are the only thing working, is there a main relay, a buzzing sound was made at time re-start for a few secnds
Jan Forrest

Rotherham, UK

#18 Jul 1, 2015
Nebosia: Check my previous advice about Shadow pumps.

Jean-Pierre: It could be the ignition switch. They are quite fragile for a Rolls/Bentley part and can wear if previous owners have let large, heavy bunches of keys hang from them. However a quick check on the fuses in the main fuse box might reveal a blown fuse. Try that first.
Rohitsiv

Chennai, India

#19 Jul 4, 2015
Hi i have a rr ss2 1980 model, when i push the refulel button , it aint opening and due to this i cant fill petrol , could anyone help me!!

Rohit
Jan Forrest

Rotherham, UK

#20 Jul 4, 2015
Do you mean the button to open the door over the fuel filler cap? I can't say for certain about the Shadow 2, but on the Shadow 1 there's a ring inside the right hand side of the boot/trunk with a steel cable that you can use to manually operate the door. They can be quite stiff so may need a strong pull to open the door. Mine is!
I'm pretty sure that the electric system is controlled by a fuse in the fuse box, so check for a blown fuse first.

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