Isuzu Trooper Owners Club UK™

wisa1980 · * Joined: 08 Jul 2007 Posts: 34 Location: cambs

over the weekend had a good 200mile round trip from a full tank then filled up again. My mpg worked out at only 19mpg Sad

.. after reading some of the posts ive noticed that many of you on run of motorway traffic were getting between 26 and 30 mpg, any ideas of making mine better???? I serviced it a month or 2 ago and since then on start up in mornings and again 8/9 hours latter it stated chucking out loads of white smoke Confused

??????????????

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:::Matski::: · Posted: Mon Dec 10, 2007 20:54 Post subject:

What engine?
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wisa1980 · * Joined: 08 Jul 2007 Posts: 34 Location: cambs

Its a 1992 swb 3.1td intercooler isuzu trooper. ( not import)

TimBanham · Posted: Mon Dec 10, 2007 21:44 Post subject:

you should get better than than.

Mine drops to about 24 mpg on stop start runs but otherwise sits at about 27
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wisa1980 · * Joined: 08 Jul 2007 Posts: 34 Location: cambs

last time i checked i was gettin about 22 back and forwards to work, and after the long run thought it would be a bit higger. this is why i mentioned ther service and the smoke dint know wether it shows signs of a problem i am unaware of???

:::Matski::: · Posted: Mon Dec 10, 2007 22:03 Post subject:

Just a thought but when you start how long does the glow plug light stay on for? and if you stop when warm and restart how long then?
_________________
Front Aussie Locker - Rear LSD - Petrol Diffs
2" Lift - 1" Body lift - +2" shocks - 32" KL71s
2.5" free flow stainless system - TMIC - 20psi Boost
Suckin' Diesel Baby!

markymoan · Posted: Mon Dec 10, 2007 22:09 Post subject:

Sounds to me like the injectors are out of time or not atomising properley.
A cloud of white is normaly unburned fuel Wink

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wisa1980 · * Joined: 08 Jul 2007 Posts: 34 Location: cambs

first thing in the morning it stays on for about 20/30secs. but when its warm and i start it again probably only10/15secs.

If i was to put some injector cleaner in the fuel filter and run it do you think that might cure it?

When i first start it it chucks out a big beloo of smoke and coughs and splutters then after a minute or so its ok. i can start and stop it all day and there is no prob it only happens when its been sitting for a few hours

:::Matski::: · Posted: Mon Dec 10, 2007 22:19 Post subject:

Have a look at the QOS sensor on the t-stat housing (the smaller one of the two on the top) look at the wiring as this is exactly what it would do if this was disconnected.

Also have a look at the glow plus and test them with a multi meter.
_________________
Front Aussie Locker - Rear LSD - Petrol Diffs
2" Lift - 1" Body lift - +2" shocks - 32" KL71s
2.5" free flow stainless system - TMIC - 20psi Boost
Suckin' Diesel Baby!

DYLAN · Posted: Mon Dec 10, 2007 22:20 Post subject:

:::Matski::: · Posted: Mon Dec 10, 2007 22:20 Post subject:

wisa1980 · * Joined: 08 Jul 2007 Posts: 34 Location: cambs

ok will have a look 2mora, will this also affect my mpg?

dxmedia · Posted: Mon Dec 10, 2007 22:28 Post subject:

White cloud - diesel.

Wet patch of water under exhaust - Water

Blue - Oil

Black - Over fueling (similar to running rich on a petrol) when the engine is working hard

HUGE amount of white when driving - New turbo needed Wink

As for MPG - I never get anywhere near 30 - normally around 17 - 20 round town, and 23 - 25 on a motorway.
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Peej · Posted: Mon Dec 10, 2007 22:35 Post subject:

I actually get less on a run, as it's running a bit fast at 70mph, needs another gear! Day to day I manage damn near 30mpg, I get about 220 miles, most weeks to £35.
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wisa1980 · * Joined: 08 Jul 2007 Posts: 34 Location: cambs

how many miles a day do you do then??? that sounds better consumption whats ya trick???

I only do bout 8miles to work 8 miles back usually at about 55/60mph.......... thats about 100 miles a 6 day week then usually poppin into town and waht not at the weekend and i a can easily use £30 quid