1.9D economy on cold runs......

Anything about BXs
User avatar
Kitch
Over 2k
Posts: 6350
Joined: Sun Jul 03, 2005 9:36 pm
Location: Fareham, Hants
My Cars: Too many to list
x 71

1.9D economy on cold runs......

Post by Kitch »

So the Estate has been struggling to achieve anything like decent fuel economy. It's currently asking for more having just managed 31MPG on this batch!

I remember it used to be much better on average, but I was driving further. Now I'm doing 4 miles in the morning, and 4 in the evening, so not ideal for economy. That said, I've run a number of cars on the daily slog and the Saxo VTS used to crack 32mpg. Even the 16v can do about 25mpg in this type of use.

I do like the estate like an old friend, but it's bloody slow and if it's not bloody cheap either I think I might go back to hot hatches :lol:

Has anyone else got experience of short, cold runs in an n/a diesel?
CCC BX monthly column writer bloke thingy - bx@citroencarclub.org.uk

The national BX register - click to submit a car!

1983(A) 16TRS (Rouge Valleunga) - 1987(E) GTi 16v (Noir) - 1990(H) 16Valve (Rouge Furio)

User avatar
Tim Leech
Over 2k
Posts: 15469
Joined: Tue Apr 15, 2008 11:12 am
Location: Derby
My Cars: LOTS!
x 120

Re: 1.9D economy on cold runs......

Post by Tim Leech »

maybe a good service (and some injector cleaner) and a few good runs? worked wonders on my 19TZD (RIP) which was dog slow.
Lots of Motors, mostly semi broken....

User avatar
Kitch
Over 2k
Posts: 6350
Joined: Sun Jul 03, 2005 9:36 pm
Location: Fareham, Hants
My Cars: Too many to list
x 71

Re: 1.9D economy on cold runs......

Post by Kitch »

Others have suggested the same, but what's a service going to do? I've put a new air filter in it, and if I change the oil it'll thicken it up which in theory will make the engine more thirsty due to drag.
I did put some injector cleaner in there but I personally think the stuff is like brown gas!

A session on the dyno showed the engine was in good health, with more power than originally quoted. I wonder if someone's tuned it?!

I've haven't taken it on any runs as I still haven't done the cambelt and if it goes ping I don't want to be more than walking distance from home!
CCC BX monthly column writer bloke thingy - bx@citroencarclub.org.uk

The national BX register - click to submit a car!

1983(A) 16TRS (Rouge Valleunga) - 1987(E) GTi 16v (Noir) - 1990(H) 16Valve (Rouge Furio)

User avatar
Tim Leech
Over 2k
Posts: 15469
Joined: Tue Apr 15, 2008 11:12 am
Location: Derby
My Cars: LOTS!
x 120

Re: 1.9D economy on cold runs......

Post by Tim Leech »

Dont know what to suggest? you havent got any sticking brakes?
Lots of Motors, mostly semi broken....

User avatar
JayW
1K Away
Posts: 1590
Joined: Thu Dec 07, 2006 6:40 pm
Location: Now listen here you mullet...
x 13

Re: 1.9D economy on cold runs......

Post by JayW »

The n/a i had last year was averaging 40-43mpg on my 5 mile daily commute, so i'd agree there is an isssue but couldn't say what.
I have zero patience for your tedium.

User avatar
Kitch
Over 2k
Posts: 6350
Joined: Sun Jul 03, 2005 9:36 pm
Location: Fareham, Hants
My Cars: Too many to list
x 71

Re: 1.9D economy on cold runs......

Post by Kitch »

No sticky brakes, engine appears to run in good health.

I might pop a lazier thermostat in there and see what happens. Or put some foil over the grille :lol:
CCC BX monthly column writer bloke thingy - bx@citroencarclub.org.uk

The national BX register - click to submit a car!

1983(A) 16TRS (Rouge Valleunga) - 1987(E) GTi 16v (Noir) - 1990(H) 16Valve (Rouge Furio)

User avatar
MULLEY
Over 2k
Posts: 8406
Joined: Thu Jun 22, 2006 11:10 pm
Location: Derbyshire
x 8

Re: 1.9D economy on cold runs......

Post by MULLEY »

Are you ragging it to within an inch of its life? If you are changing up at 2000rpm or even lower it should do low 40's on those short runs if everything is well with it. Could it possibly be a poor injector spray pattern which might not be showing any symptons?
2002 C5 2.0 HDI Estate - Jasmine - Now SORN
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN

I'm not just a username, i'm also called Matthew.

User avatar
Kitch
Over 2k
Posts: 6350
Joined: Sun Jul 03, 2005 9:36 pm
Location: Fareham, Hants
My Cars: Too many to list
x 71

Re: 1.9D economy on cold runs......

Post by Kitch »

MULLEY wrote:Are you ragging it to within an inch of its life? If you are changing up at 2000rpm or even lower it should do low 40's on those short runs if everything is well with it. Could it possibly be a poor injector spray pattern which might not be showing any symptons?
No, certainly not ragging it. Trying to be gentle if anything, and I'm usually pretty good at getting decent economy from engines if I try (can average 48mpg around town in the Picasso).
You have to get your foot down a bit to get it to move, but I'm not revving it up. I don't know what I'm changing up at as I have a clock not a rev counter (which doesn't work :lol: ) but at a guess it's 1500-2500rpm.
CCC BX monthly column writer bloke thingy - bx@citroencarclub.org.uk

The national BX register - click to submit a car!

1983(A) 16TRS (Rouge Valleunga) - 1987(E) GTi 16v (Noir) - 1990(H) 16Valve (Rouge Furio)

Mothman

Re: 1.9D economy on cold runs......

Post by Mothman »

Maybe you have a fuel leak somewhere?

Andy

User avatar
MULLEY
Over 2k
Posts: 8406
Joined: Thu Jun 22, 2006 11:10 pm
Location: Derbyshire
x 8

Re: 1.9D economy on cold runs......

Post by MULLEY »

TBH my txd seems to get upto temperature pretty damn quick, within a mile i reckon & i live in a hilly part of the country. Are these short distances in 60mph zones or are they mixed 30, 40, 50 etc?? When i ragged the TZD Turbo, that managed 36mpg so there's deffo something up with your car. If there isn't fuel pissing out somewhere as suggested by Andy its a tad strange. Without asking you to suck eggs, how exactly are you working out the fuel consumption? Do you have the double fuel tank 66 litres, or is it the smaller one & thats why your calcs are out?
2002 C5 2.0 HDI Estate - Jasmine - Now SORN
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN

I'm not just a username, i'm also called Matthew.

User avatar
Kitch
Over 2k
Posts: 6350
Joined: Sun Jul 03, 2005 9:36 pm
Location: Fareham, Hants
My Cars: Too many to list
x 71

Re: 1.9D economy on cold runs......

Post by Kitch »

Mothman wrote:Maybe you have a fuel leak somewhere?

Andy
Worth looking at I guess, but no puddles and no smell. I know the lines looked a bit flakey so worth a quick look.
CCC BX monthly column writer bloke thingy - bx@citroencarclub.org.uk

The national BX register - click to submit a car!

1983(A) 16TRS (Rouge Valleunga) - 1987(E) GTi 16v (Noir) - 1990(H) 16Valve (Rouge Furio)

User avatar
Kitch
Over 2k
Posts: 6350
Joined: Sun Jul 03, 2005 9:36 pm
Location: Fareham, Hants
My Cars: Too many to list
x 71

Re: 1.9D economy on cold runs......

Post by Kitch »

MULLEY wrote:TBH my txd seems to get upto temperature pretty damn quick, within a mile i reckon & i live in a hilly part of the country. Are these short distances in 60mph zones or are they mixed 30, 40, 50 etc?? When i ragged the TZD Turbo, that managed 36mpg so there's deffo something up with your car. If there isn't fuel pissing out somewhere as suggested by Andy its a tad strange. Without asking you to suck eggs, how exactly are you working out the fuel consumption? Do you have the double fuel tank 66 litres, or is it the smaller one & thats why your calcs are out?
I've never heard the cooling fan come on in it. I fitted the 16v temp gauge but it doesn't seem to be working. Short distances are through a housing estate, down a tight, twisty narrow lane, along a 60mph road and then through a housing estate again. Not ideal I'll admit.

Using fuelly to work out the consumption by running until the light stays on under all conditions, so braking, pulling away, corners etc. As soon as that happens for the first time I note the trip counter. So far I've done 76miles on 10L of diesel and the light has now stayed on. I know brimming click to click is more accurate, but I'm happy to get a round number and if I brim it someone will only nick it if I leave it parked in the industrial park overnight knowing my luck!

Or it'll all leak away :lol:
CCC BX monthly column writer bloke thingy - bx@citroencarclub.org.uk

The national BX register - click to submit a car!

1983(A) 16TRS (Rouge Valleunga) - 1987(E) GTi 16v (Noir) - 1990(H) 16Valve (Rouge Furio)

Mothman

Re: 1.9D economy on cold runs......

Post by Mothman »

MULLEY wrote:TBH my txd seems to get upto temperature pretty damn quick, within a mile i reckon & i live in a hilly part of the country. Are these short distances in 60mph zones or are they mixed 30, 40, 50 etc?? When i ragged the TZD Turbo, that managed 36mpg so there's deffo something up with your car. If there isn't fuel pissing out somewhere as suggested by Andy its a tad strange. Without asking you to suck eggs, how exactly are you working out the fuel consumption? Do you have the double fuel tank 66 litres, or is it the smaller one & thats why your calcs are out?
I believe that any diesel or petrol for that matter prior to 1991 had the 52 litre fuel tank other than turbos which had the 66 litre one. My 1990 TGS has a 52 litre tank as do all my 3 MK 1 diesels so i reccon your Estate also has this type too.After this date, all BXs had the 66 litre jobbie.

Andy

User avatar
MULLEY
Over 2k
Posts: 8406
Joined: Thu Jun 22, 2006 11:10 pm
Location: Derbyshire
x 8

Re: 1.9D economy on cold runs......

Post by MULLEY »

Hmmm, i thought my 1990 8 valve Gti had the larger tank? Can't remember tbh....

Kitch, that means your consumption is 34.55mpg, so its improving :)
2002 C5 2.0 HDI Estate - Jasmine - Now SORN
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN

I'm not just a username, i'm also called Matthew.

Chris Abbott
BXpert
Posts: 149
Joined: Mon Jan 12, 2009 4:08 pm

Re: 1.9D economy on cold runs......

Post by Chris Abbott »

My 1st 1.9 n/a with 100+K miles did low 30,s when i 1st had her, I had the injectors reconditioned and 48+ MPG was achieved straight away, quite expensive to do but well worth it.