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trickster5000



Member Since: 12 Dec 2015
Location: Pocklington, East Yorkshire
Posts: 188

United Kingdom 1989 Defender 90 300 Tdi CSW Arles Blue
Engine starting problems

Hi,

So after leaving it overnight, the engine fires once at the turn of the key, then has to be cranked over several times before it starts. Since it fires once, I'm guessing there's a little diesel in the top of the injectors but then nothing after that and so has to be cranked until the fuel reaches the injectors again.

I have replaced the fuel lift pump and checked all the fuel leak-off pipes for leaks or openings - nothing obvious. Is there any way to properly check for air leaks in the fuel leak-off system?

Edit: Engine is a 300tdi out of a disco if it helps Matt.

1989 Ninety CSW - http://www.defender2.net/forum/topic46809.html

Post #587966 27th Dec 2016 1:55pm
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shaggydog



Member Since: 12 Aug 2012
Location: Kent
Posts: 3207

United Kingdom 1991 Defender 110 200 Tdi USW Arles Blue

Check your leak off pipes again.

I had the exact same thing where it would start on first turn then stall. Crank it over for a while and then it would start.

Traced it to one of the leek of pipes had a hairline crack which was letting in air.

Also check that the banjo nuts are done up tight, they can occasionally work loose.

Failing that, check all your other pipework for leaks and your stop solenoid on the injector pump. Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197

Self confessed mileage hunter Very Happy

Post #587970 27th Dec 2016 2:48pm
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trickster5000



Member Since: 12 Dec 2015
Location: Pocklington, East Yorkshire
Posts: 188

United Kingdom 1989 Defender 90 300 Tdi CSW Arles Blue

Just been out to have another look at the leak-off pipes. I think the safest thing to do is just buy a whole new leak-off system inc banjos and copper washers. Whilst I can't find an actual crack, the braided pipes are very frayed and worn and look very suspect. Only 20 odd quid and I think it'll fix the problem.


Click image to enlarge



Click image to enlarge
 Matt.

1989 Ninety CSW - http://www.defender2.net/forum/topic46809.html

Post #587972 27th Dec 2016 3:18pm
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shaggydog



Member Since: 12 Aug 2012
Location: Kent
Posts: 3207

United Kingdom 1991 Defender 110 200 Tdi USW Arles Blue

Thumbs Up Good shout. Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197

Self confessed mileage hunter Very Happy

Post #587974 27th Dec 2016 3:27pm
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trickster5000



Member Since: 12 Dec 2015
Location: Pocklington, East Yorkshire
Posts: 188

United Kingdom 1989 Defender 90 300 Tdi CSW Arles Blue

Little update to this:

Looks like I'm still having problems even after a completely new set of leak-off pipes inc. banjos and sealing washers.


Click image to enlarge


I'd not noticed it as much recently as we've been using it more often. It seems to be a really slow leak since leaving it 1-3 days and it'll start first time, however, anything longer than that takes a fair bit of cranking to get it started. Can anyone suggest what to check next (just had a new fuel lift pump and new leak off pipes)?

Need to get this sorted asap as it's putting a lot of strain on battery/starter motor etc. Matt.

1989 Ninety CSW - http://www.defender2.net/forum/topic46809.html

Post #618130 20th Apr 2017 12:43pm
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dorsetsmith



Member Since: 30 Oct 2011
Location: dorset
Posts: 2276

United Kingdom 2003 Defender 90 Td5 HT Caledonian Blue

check for air leak in your fuel system sound like fuel may be draining back on fuel lift side i.e. between tank and filter and lift pump pickup 90 TD5 2006

HT 90 TD5 2003

Post #618161 20th Apr 2017 3:31pm
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trickster5000



Member Since: 12 Dec 2015
Location: Pocklington, East Yorkshire
Posts: 188

United Kingdom 1989 Defender 90 300 Tdi CSW Arles Blue

Thanks for the reply. Is there an easy way to check if the system is letting in air? I've had a good poke around with a torch, checked all union nuts are done up tight etc, nothing looks obvious. Matt.

1989 Ninety CSW - http://www.defender2.net/forum/topic46809.html

Post #618183 20th Apr 2017 4:58pm
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dorsetsmith



Member Since: 30 Oct 2011
Location: dorset
Posts: 2276

United Kingdom 2003 Defender 90 Td5 HT Caledonian Blue

i have used clear fuel line to check for this problem in the past

also check your injector pump run sol is working 100% pickup 90 TD5 2006

HT 90 TD5 2003

Post #618206 20th Apr 2017 7:03pm
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trickster5000



Member Since: 12 Dec 2015
Location: Pocklington, East Yorkshire
Posts: 188

United Kingdom 1989 Defender 90 300 Tdi CSW Arles Blue

Thanks for your help. I'll have to dig around in the garage see if I can find some clear piping.

In the meantime, I lifted the driver's seat cover to have a look at the top of the tank. Does the following look normal for a 26 year old car? It looks quite corroded around the elbows, but I can't see any holes, is there any sort of gasket or seal here that could be replaced?


Click image to enlarge



Click image to enlarge
 Matt.

1989 Ninety CSW - http://www.defender2.net/forum/topic46809.html

Post #618244 20th Apr 2017 8:20pm
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jst
Site Supporter


Member Since: 14 Jan 2008
Location: Taunton
Posts: 4156

2011 Defender 110 Puma 2.4 USW Stornoway Grey

fuel filter sealed correctly? not an old seal in there too? or its come undone?

was going to post you can just use any POL resistant pipe for the leak off pipes rather than new banjo chain, bnut they look dry. Cheers

James

www.4x4adventures.co.uk
110 XS Utility
90 TC 2.8TGV auto
90 tdci Softtop - FOR SALE

Post #618327 21st Apr 2017 8:58am
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trickster5000



Member Since: 12 Dec 2015
Location: Pocklington, East Yorkshire
Posts: 188

United Kingdom 1989 Defender 90 300 Tdi CSW Arles Blue

Thanks, but I replaced the fuel filter a couple of weeks ago when I serviced it. Ran a bit of diesel round the seal and it doesn't look to be leaking at all.

This evening I'm going to take the stop solenoid out, test it and replace the little O ring, see if that's causing a problem. Also check for wear on the plunger. Matt.

1989 Ninety CSW - http://www.defender2.net/forum/topic46809.html

Post #618377 21st Apr 2017 11:40am
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 4664

United Kingdom 1992 Defender 90 200 Tdi SW Arles Blue

I remember a similar problem with a 300tdi Discovery that was eventually traced to a corrosion pin hole in the elbow from the top of the tank. It was a Censored to find and was temporarily cured by coating the whole thing with epoxy resin, which proved the diagnosis. Barring anything more obvious, it'd be worth a go with yours. 
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MY BUILD THREAD

Post #618383 21st Apr 2017 12:12pm
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trickster5000



Member Since: 12 Dec 2015
Location: Pocklington, East Yorkshire
Posts: 188

United Kingdom 1989 Defender 90 300 Tdi CSW Arles Blue

Thanks LRA. Following the golden rule of troubleshooting, changing one thing at a time, I will only do the stop solenoid tonight, if that doesn't fix it I'll try the epoxy resin trick sometime next week. Matt.

1989 Ninety CSW - http://www.defender2.net/forum/topic46809.html

Post #618397 21st Apr 2017 1:26pm
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jst
Site Supporter


Member Since: 14 Jan 2008
Location: Taunton
Posts: 4156

2011 Defender 110 Puma 2.4 USW Stornoway Grey

so the fault was there prior to the filter change?

you wont see diesel leaking if its drawing in air and diesel is running back to tank Cheers

James

www.4x4adventures.co.uk
110 XS Utility
90 TC 2.8TGV auto
90 tdci Softtop - FOR SALE

Post #618417 21st Apr 2017 2:37pm
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trickster5000



Member Since: 12 Dec 2015
Location: Pocklington, East Yorkshire
Posts: 188

United Kingdom 1989 Defender 90 300 Tdi CSW Arles Blue

Yes, which makes me think it's not the filter especially as I did moisten the seal before putting it on Matt.

1989 Ninety CSW - http://www.defender2.net/forum/topic46809.html

Post #618435 21st Apr 2017 3:45pm
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