RE: [doc] Vin 551

[Johnstone Richard <richard.johnstone@xxxx>]

Sounds like similar problems to what I'm having.

Have you tried adjusting the air/fuel mixture?

Just in front of metering head there is either a small hole. When released
from the factory this hole was sealed with metal to comply with US emissions
regulations. If still sealed you would need to drill or punch this through,
trying to catch all the swarf as it comes through. Otherwise you may have a
plastic plug or something else removable already there. Hole does need to
be plugged after as causes a vacuum leak. Mixture screw is adjusted using a
3mm alan key. Turn clockwise to richen mixture, anti to lean it out. Not
the easiest thing in the world to adjust as you tend to push the air intake
down whilst trying to twiddle etc etc.

Don Stieger's advice was to lean out the mixture till it stalls, then richen
it up till it stalls (should be approx 1 turn), then set it half way between
the two.

Is your frequency valve working? should be able to hear/feel it buzzing.

Another easier thing to try is to disconnect the lambda computer altogether,
see how it runs then. To do this go in compartment under cargo net behind
drivers seat. Bottom Right hand side is a big rectangular silver box with
long black plug. Spring on left releases plug, swivel up to unhook from
right.

Are you sure you have no vacuum leaks elsewhere? Check the hoses.

Richard
#2727


-----Original Message-----
From: mick_kerfoot [mailto:mick_kerfoot@xxxx]
Sent: 15 July 2002 09:02
To: doc-uk@xxxxxxxxxxxxxxx
Subject: [doc] Vin 551


Hi Folks,

I just thought I'd let you all know whats going on with 551.

After the engine bay fire, Jinx (551)has had all the wireing looms 
etc replaced. (Thanks to Dave Howarth) The fuel lines that melted 
have now been made out of stainless steel braided pipes. All ht's etc 
are new. Took it to the local bosche specialist who checked it out. 
The metering head was totally blocked in 3 outlet ports, the warm up 
regulator was did nothing but look pritty, The idling ecu was faulty, 
cold start circuit didn't work and the fuel pump needed re 
positioning.lower in the chassis. (It no longer lives in the tank).

I have replaced the metering head and warm up regulator, sorted the 
idle ecu, changed the fuel filter and repositioned the pump. It now 
idles but doesn't like being revved unless you give it a drink of 
petrol down the air intake then it revves great and smoothly untill 
the fuels gone. then it pops and bangs untill you let it idle.

It's fuel starvation I am sure. My thoughts are that it's the fuel 
pump (non Bosche) not upto delivering the correct amount of fuel at 
the right pressure to let the engine do much more than idle.

I am sure it's nothing tho do with the Lambda circuit as Jinx, no 
longer has any Lambda bits in it.

Any thoughts?

I have now repaired the drivers electric window mechanism and door 
lock. The only electrical faults are now the temp sender, and need to 
source a fuel sender unit.

Other bits I need are windscreen (£50 deposit on one of Daves) a new 
head lining, and to source the metal heat shield that holds the 
bottom of the rear bumper to the chassis.
Oh and new door seals Jinx leaks like a sivve.

Mick Kerfoot VIN 551 (Jinx)




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