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Kit

Member Since: 12 Feb 2016
Location: Shropshire
Posts: 1110

Fuel: white smoke

My defender is over fueling (not using any water/oil), it's done 170K miles so it's probably due a new fuel pump but is there anything else it could be like worn injectors?

Also any recommendations on which fuel pump to buy? 1993 200 Tdi 90 CSW
1956 Series 1 Hard-top
1958 Series 1 Soft-top

24th Dec 2017 11:29am

trickster5000

Member Since: 12 Dec 2015
Location: East Yorkshire
Posts: 487

Have you tried isolating each injector to see if it's a particular injector causing the problem? Or possibly water in your diesel? Matt.

'89 90 CSW with a 3.5 V8 conversion (WIP) - http://www.defender2.net/forum/topic46809.html

24th Dec 2017 11:40am

Kit

Member Since: 12 Feb 2016
Location: Shropshire
Posts: 1110

I recently put a new fuel tank in and I've put a couple of tanks of fuel through it so im pretty sure it's not water in the fuel.

How would I isolate which injector is causing issues if it is them? 1993 200 Tdi 90 CSW
1956 Series 1 Hard-top
1958 Series 1 Soft-top

24th Dec 2017 11:43am

trickster5000

Member Since: 12 Dec 2015
Location: East Yorkshire
Posts: 487

With the engine running, loosen the union on each injector, one-by-one and see if the smoke stops Matt.

'89 90 CSW with a 3.5 V8 conversion (WIP) - http://www.defender2.net/forum/topic46809.html

24th Dec 2017 11:45am

Kit

Member Since: 12 Feb 2016
Location: Shropshire
Posts: 1110

It's worth a shot, will a knackered injector cause mpg to drop? 1993 200 Tdi 90 CSW
1956 Series 1 Hard-top
1958 Series 1 Soft-top

24th Dec 2017 12:09pm

trickster5000

Member Since: 12 Dec 2015
Location: East Yorkshire
Posts: 487

Well white smoke, if it's not water in the system, is usually very excessive overfuelling. Black smoke is overfuelling but the fuel still partially ignites whereas white usually indicated a significant excess. So yes, I would guess that if the white smoke is unburnt fuel from a faulty injector you would have a lot lower mpg?

All kind of guesswork but it makes sense in my mind

Hope this helps!

Matt.

'89 90 CSW with a 3.5 V8 conversion (WIP) - http://www.defender2.net/forum/topic46809.html

24th Dec 2017 12:13pm

Kit

Member Since: 12 Feb 2016
Location: Shropshire
Posts: 1110

Yeah I agree, so theoretically when the union is loosened it should be obvious I hope!

Will let you know how I get on, thanks for the advice 1993 200 Tdi 90 CSW
1956 Series 1 Hard-top
1958 Series 1 Soft-top

24th Dec 2017 12:55pm

geobloke

Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4392

Hi Kit. White smoke can also be oil bypassing the bearing seal on the exhaust side of the turbo. Can cause quite the amount of white smoke with not a great drop in oil level. Would be worth checking the play in your turbos impeller, especially axial in/out play. Should be negligible.

24th Dec 2017 2:53pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 7682

2011 Defender 110 Puma 2.4 USW Stornoway Grey

when is it worse? startup/underload/over run?

when was timing belt last done Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop

24th Dec 2017 6:41pm

Kit

Member Since: 12 Feb 2016
Location: Shropshire
Posts: 1110

Timing belt was done recently (2 months ago) do you think it was setup wrong?

It's at worst on start up and incrementally gets better until the engine has fully warmed up

I'll check the turbo too

1993 200 Tdi 90 CSW
1956 Series 1 Hard-top
1958 Series 1 Soft-top

24th Dec 2017 9:28pm

Blackhat90

Member Since: 31 Dec 2016
Location: Forfar
Posts: 86

Yeh it will be one injector, do the slacken illiminator test, to find it, , i"v had this , lots of white smoke on start up. clears when engine is hot,, usually the idle is erratic when cold,, theres full sets of recon injectors on ebay, £190,

24th Dec 2017 11:51pm

geobloke

Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4392

Kit wrote:
Timing belt was done recently (2 months ago) do you think it was setup wrong?

It's at worst on start up and incrementally gets better until the engine has fully warmed up

I'll check the turbo too

Sure check it, but it now sounds like this is not the cause. Sounds like a timing or fuel pump issue.

25th Dec 2017 12:05am

Kit

Member Since: 12 Feb 2016
Location: Shropshire
Posts: 1110

Blackhat90 wrote:
Yeh it will be one injector, do the slacken illiminator test, to find it, , i"v had this , lots of white smoke on start up. clears when engine is hot,, usually the idle is erratic when cold,, theres full sets of recon injectors on ebay, £190,

Any recommended sellers? 1993 200 Tdi 90 CSW
1956 Series 1 Hard-top
1958 Series 1 Soft-top

25th Dec 2017 1:25am

Procta

Member Since: 04 Dec 2016
Location: Sunderland
Posts: 4932

kit, id change the glow plugs in case that's causing problems, sometimes one can go down causing some white smoke at start up. My Dturbo had this problem. before you go about injectors as mentioned, and also change where you fill up in case its a bad batch of diesel Defender TD5 90 ---/--- Peugeot 306 HDI hatch back

Success is 90% Inspiration and 4 minutes Preparation # you can make it!

25th Dec 2017 3:01am

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 7682

I would check timing belt first for piece of mind Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop

25th Dec 2017 8:59am

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