924Board.org

S.Devon · Joined: 03 Sep 2010 Posts: 7 Location: Devon, England

Hi Everyone,

I'm loving my recently bought 924, and would be out in her all the time, but the inordinate fuel consimption means I just can't afford to. She's a 1983 924 2ltr, and I understand around 30MPG is what I should be able to get. At the moment however, it's more like 10-15MPG. With UK petrol prices as they are, this is killing me.

I'm no great shakes mechanically, but any suggestions as to where you think I should be looking/what I should be doing would be most welcome.

Thank you,

Jason.

Rich H · Posted: Mon Sep 27, 2010 9:51 pm Post subject:

A basic tune up will probably sort if it's running OK.
You need a Timing lights and CO meter.
Takes me about 20-30 mins including a cup of tea.

_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec

924aussie · Posted: Mon Sep 27, 2010 10:08 pm Post subject:

What are you paying ?

Its about $1.25 to $1.40 a litre here in Brisbane
_________________
green 924 .. 1980 rego 924PSH
1998 Mopar Neon ... sick
2003 Challenger / Montery 4WD
1995 Hyundai Scoupe ... sold
1998 Nissan Silvia ... sons back from OS he has taken it
BIG BLOODY MOTORHOME 300zx Sold
1980 Fire truck Sold

S.Devon · Joined: 03 Sep 2010 Posts: 7 Location: Devon, England

Thank you Rich H

As for Aussie924, the point is, I'm paying 2-3times more than I should be.. but it's currently around £1.15 per ltr here in the UK.

924aussie · Posted: Mon Sep 27, 2010 10:33 pm Post subject:

No wonder my son catches trains and Busses all over the UK, do you still have to add the additive as well ie, like Valvemaster Lead Substitute ?

Alan
_________________
green 924 .. 1980 rego 924PSH
1998 Mopar Neon ... sick
2003 Challenger / Montery 4WD
1995 Hyundai Scoupe ... sold
1998 Nissan Silvia ... sons back from OS he has taken it
BIG BLOODY MOTORHOME 300zx Sold
1980 Fire truck Sold

Rich H · Posted: Mon Sep 27, 2010 10:39 pm Post subject:

No additives needed in a 924 over here but the turbo likes to drink super petrol (97/98 RON) which is anything fron £1.20 ro £1.35 a litre (Motorway service stations it's more like £1.30/£1.50)
_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec

Smoothie · Posted: Tue Sep 28, 2010 5:24 am Post subject:

Poor alignment, and underinflated tires can also contribute to low fuel mileage.

-And poor fuel atomization due to worn/dirty injectors.
_________________
"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

Rich H · Posted: Tue Sep 28, 2010 5:57 am Post subject:

Start with a tune up though

_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec

S.Devon · Joined: 03 Sep 2010 Posts: 7 Location: Devon, England

Thanks to everyone who contributed.

In the end however it was something else.. The fuel supply was too rich. A small, forward facing screw on the engine block went a full 3 turns clockwise. The result is a smoother quieter engine noise, less grunt and power too:( and it stalls when idling sometimes, but I get 30MPG instead of 10-15 now, so I'm happy with that.

924RACR · Posted: Thu Nov 04, 2010 9:27 pm Post subject:

Time to check your ignition timing, maybe vacuum leaks too...
_________________
Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

924 sport · Joined: 31 Oct 2010 Posts: 5 Location: Cairns Australia

$ 1.37 (98 ron) $1.27 for normal (93 ron)a litre hear in Cairns .Seems these days the pound only fetches the same in purchase value as the Aussie dollar.

Rich H · Posted: Thu Nov 04, 2010 10:45 pm Post subject:

Does when it comes to fuel and probably beer too...
_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec