Messages

46

Mk IV, Superblower, CRS and other Continuation Cars Forum / Re: 302 EFI Engine refrains from starting

« on: August 06, 2018, 22:40:19 »

Did I forget to mention on this thread that meanwhile the Mk IV runs, after having installed new LP pumps and exchanged  the deficient ECU against a working element from a similar car. The ECU had one transistor burned on the path governing negative return to command the pump relay and the injectors. (Not sure this is correctly explained).
Need to find a replacement ECU with D3D code (programmed for a specitic application/destination market). If anyone would have such sitting around, thanks for contacting me via PM.

Thanks to all who gave me a precious hint to get to the solution of this problem.
Constant

47

Mk IV, Superblower, CRS and other Continuation Cars Forum / Re: 302 EFI Engine refrains from starting

« on: August 03, 2018, 14:29:04 »

Mine has done 380000 km in 28 years - Your mileage may vary... pun intended 

what car is that ?

48

Mk IV, Superblower, CRS and other Continuation Cars Forum / Re: 302 EFI Engine refrains from starting

« on: August 03, 2018, 12:45:50 »

you might be right, TTM, but sofar my mount travelled some 78000 kms over 25 years throughout Europe (of which the first 2 owners only had covered 11.000 kms in the first 9 years of the Mk IV's life), in all weather conditions, faultlessly, never missing a beat. I was even not aware of the 3 pump system, as all had been working fine all the time. So maybe next time I'll encounter problems, I will think twice about it ...

49

Mk IV, Superblower, CRS and other Continuation Cars Forum / Re: 302 EFI Engine refrains from starting

« on: August 02, 2018, 23:17:34 »

The Mk IV is running  again     happy me!

I'll get back with a report shortly.

Many thanks to all for your precious hints, suggestions and help with hardware.

Constant

50

Mk IV, Superblower, CRS and other Continuation Cars Forum / Re: 302 EFI Engine refrains from starting

« on: July 31, 2018, 14:41:14 »

That appears to be a strange setup
The red tops are a high flow (150lph), low pressure pump (6-8psi). Most EFI systems require 200lph+ and 40-45psi, so presumably the 3rd pump is used to boost the flow and pressure
Looks like a carburetted system that has been upgraded to EFI

Hi Rob,
Maybe strange set-up but easily traceable as to its origins, as per AC Autokraft production spec sheet (which I have):
- the car is a LW chassis AKL
- had been ordered originally for a customer in the Far East (some time late 1991 early 1992); exact spec however unknown to me;
- this deal fell through (reason unknown)
- car was then assigned to a German customer which led to a number of modifications recorded on the production spec sheet: under "1st Updates required at 5th July 1992": a list of some 33 modifications starting with: "Car to be altered to meet German TÜV approval" - under these: "Fit Jaguar fuel cap assembly, update fuel pump system to three pump system" ......
- completion date of the car is 28 July 1993; production spec sheet printed on 4 August 1993.

51

Mk IV, Superblower, CRS and other Continuation Cars Forum / Re: 302 EFI Engine refrains from starting

« on: July 30, 2018, 10:43:04 »

The situation is currently as follows:

- after having (re)checked all electrical circuits, not being able to read the ECU though (as no corresponding program/hardware available), I had asked the garage to recheck the fuel pressure at the ramp. Fuel pressure at the ramp is crucial to command the injectors;
- ultimately they found out that at least one on the pumps is dead (previously when turning ignition key and cranking the engine, one heard the pump work, without being able to tell if all pumps work, so wrongly assuming that pumps were working; fuel was available at the ramp, but fuel pressure had not been checked);  now they checked more thoroughly actually feeling the pumps while having ignition on!

- so one of the LP pumps being dead, I decided to replace the 2 LP pumps before going any further and swapping ECU's;

- in this process I found out actually that there is not only one pump, but 3 as on the attached fuel system diagram (may be incomplete).

- have ordered the pumps last Monday from www.competitionsupplies.com in Silverstone, pumps and fittings arrived Thursday and they will be mounted today.

..... so let's wait and see what it will bring

52

General Forum / Re: New book on the Shelby Cobra Daytona Coupé

« on: July 27, 2018, 10:29:47 »

try this link, Glen 
https://mailchi.mp/fd361b63c0a8/porter-press-international-july-2018-newsletter?e=4f9143896b

53

General Forum / Re: New book on the Shelby Cobra Daytona Coupé

« on: July 27, 2018, 10:28:15 »

Coming soon: Shelby Cobra Daytona Coupe
The mid-‘60s Ferrari-challenger and its drivers
Strange....
Here is what it says at Porter Press International:

 The brutally purposeful Shelby Cobra Daytona Coupe was built to defeat Ferrari in the World Sportscar Championship, and in 1965 it did just that. This giant-slayer’s story will be told in the 13th title in our Great Cars series, due later this year. As well as looking at the Daytona Coupe’s origins and successes, author Rinsey Mills focuses on one particular example, CSX2300, which made its debut on the 1964 Tour de France and competed the following year in the Daytona 24 Hours, Sebring 12 Hours, Nürburgring 1000Km, and Reims 12 hours.

 This book will also tell the stories of the eight men who raced CSX2300: Bob Bondurant, Jochen Neerpasch, Allen Grant, Ed Leslie, Jo Schlesser, André Simon, Jack Sears, and John Whitmore.
 Put this book on your list for that annual letter to Lapland, because it will be published in time
 for Christmas.   

54

General Forum / New book on the Shelby Cobra Daytona Coupé

« on: July 27, 2018, 06:54:53 »

Porter Press have announced a new book by Rinsey Mills... coming soon

https://webmail.pt.lu/webmail/m/mail/view?id=55673&base=INBOX&tempid=

55

Mk IV, Superblower, CRS and other Continuation Cars Forum / Re: Fuel system leak

« on: July 24, 2018, 13:50:37 »

Her is a schematic drawing of the fuel system on my 1993 Mk IV with EFI engine.

56

Mk IV, Superblower, CRS and other Continuation Cars Forum / Re: 302 EFI Engine refrains from starting

« on: July 20, 2018, 07:31:08 »

A Ford Mustang specialist (with experience on 90's cars) in nearby Germany whom I consulted by phone told me that the ECU can only be read when engine running...
True?

57

ACOC News and Events / Re: ACOC Le Mans Classic 2018 6-8th July

« on: July 09, 2018, 14:36:37 »

Back from Le Mans late last night... after a fantastic but tiring w/e with 1.600 kms roundtrip, hot weather, lots of sunshine and all one needs to enjoy classic motor racing at its best.

Many thanks to Keith  and Andy  for having organized the Club's venue. It was good to see good friends back at the Friday night dinner and get to know new faces.

Spent 3 days at the LM track watching race preps, trials and races, Saturday even to late night, with AC Aces and Cobras performing very well.

I'll try to post a few pic later.

Constant (and nephew copilot André)

58

Mk IV, Superblower, CRS and other Continuation Cars Forum / Re: 302 EFI Engine refrains from starting

« on: July 04, 2018, 23:17:48 »

Not too late Rob,
Many thanks for the hints.
I'm off to Le Mans and will start all over again in scientific documented approach to make sure we register what works and what does not.
I'll be back here early next week probably with more questions.
Cheers
Constant

59

ACOC News and Events / Re: ACOC Le Mans Classic 2018 6-8th July

« on: July 04, 2018, 10:01:49 »

The route to the circuit suggests you use the D92 - that number has apparently changed - the D92 is shown west of Paris on Google maps.

You are probably right in mentioning a number change.
D roads are Departmental, so there are plenty of D92s around France.
In Département de la Sarthe, a D92 exists on the South-East side of Le Mans between Ruaudin and Arnage.

60

Mk IV, Superblower, CRS and other Continuation Cars Forum / Re: 302 EFI Engine refrains from starting

« on: July 04, 2018, 09:49:14 »

.
Constant

Good Luck with Diagnostics, Hopefully rectified and you travel To Le Mans Classic  in the MK1V,  You will be just as welcome in the yellow Lotus, or any other classic of your choice.
Give you a call later this morning.

Thank you for spotting the error in the road book , route to Chateau Grand Gaigne.

Keith

Thanks Keith,
I'm afraid the Lotus will once more be the mount for the w/e.
Can't sort the MkIV trouble out, as busy day in the office is still top priority. Sources my income to enable me playing with classics