The Toyota Landcruiser Owners Club

joinerman · Posted: Sun Jan 22, 2006 15:52 Post subject: Changing injectors

As my cruiser is blowing quit a lot of black smoke out the back i am thinking of changing the injectors. The idea of changing them is so it's not off the road long & it's done 114000 miles. My question is do i have to use the same make ( Denso ) i think or can i use another make. There is a deisel specialist near me but they are Bosch agents. Roughly how much is a set of injectors ?

Brian

94 VX 4.2 Td Import

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Spanners · *** Joined: 20 Jan 2006 Posts: 150 Location: Stafford

Hi Brian

You could give this company a call. They will probably ask you to send your injectors to them for service/return.

http://www.merlindiesel.com/

The problem with this type of injector is that there are two stage pressure settings where the second at much higher pressure requires very expensive equipment to set then up. Only a few diesel specialists have the equipment and many can only test first stage pressure/pattern. New nozzles will probably be Denso and may require different shims and possibly new springs to set them up correctly. You will also require new seat insets and O rings as both are replacement items The key point to setting them up is to avoid overfueling which may otherwise damage piston crowns. I have noticed that some on this list have put their own new nozzles into their injectors presumably without having them set up and would be interested to learn if they managed to get away with it:) Perhaps you could let us know how you get on with Merlin Diesels if you decide use them. I know that this company manufacture said test equipment so at least they should know what they are doing.

Cheers

Martin
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Landcruiser HDJ80 Auto 1993

DaveN · ******* Joined: 14 May 2005 Posts: 1190 Location: Sweden

New ones are about £1500/set. As Martin said, they're tricky to rebuild, and all the guys I spoke to either said no, or said yes so quick that I didn't believe them. In the end, a friend that worked or Toyota got me a set for £500.

But it still smoked a lot!

So i got the pump rebuilt at a recommended specialist.

And it still smokes!!

Conclusion I gained from this exercise:- these engines smoke a lot. They're a very old design and they're all old now anyway. Where do you think diesels get their smokey/dirty reputation from? From old smokers like ours!!

Spanners · *** Joined: 20 Jan 2006 Posts: 150 Location: Stafford

I agree with Dave. With a new set of injectors or pump rebuild there is no guarantee that you will quit smoking. You could try these on e bay

http://cgi.e bay.co.uk/ws/e bay.dll?ViewItem&item=8030562832&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1

the guy has listed them at least three times without a sale and I have no idea how good they are. As I said before though they do need to be installed and set up by a pro and you do run a risk if you DIY.

Is it missfiring if so more investigation would be wise? However the best cure I know when my 80 starts smoking is to give it a VERY hard long fast run with kick downs galore until the accumulated soot no longer billows from the back end. A new air / fuel filter may help if you have not already serviced these. Incidentally the removal of the pump is a real swine of a job and the mechanic involved MUST know what they are doing AND have the test equipment which is very specialised. In any event usually the pump has a life of over 200K.

Cheers

Martin
_________________
Landcruiser HDJ80 Auto 1993

Spanners · *** Joined: 20 Jan 2006 Posts: 150 Location: Stafford

I should have added that it is the injectors and bodies that as Dave says are ££££s the replacement nozzles can be had for £30 or so each with another £20 or so to have em set up. It is the disassembly of nozzle from body and back again where the stage 1/2 setting up comes in.

Cheers

Martin
_________________
Landcruiser HDJ80 Auto 1993

Towpack · Posted: Sun Jan 22, 2006 19:25 Post subject:

joinerman · Posted: Sun Jan 22, 2006 19:51 Post subject:

Thanx for your replies

Maybe i'll give it a couple of bottles of deisel magic in the tank & give it a good blast up the motorway.

Brian

DaveN · ******* Joined: 14 May 2005 Posts: 1190 Location: Sweden

I've just stopped looking in the rear view mirror at night.

Sometimes when it sits idling, you can see the smoke coming out, but other times it barely smokes at all.

As I've steadily collected speeding points, I now stick rigidly to the limits. And this means people insist on sticking right up your *beep* going through a 30 limit, so it always tickles me when i give it a big bootful and cover them in soot.

joinerman · Posted: Sun Jan 22, 2006 23:10 Post subject:

Yeah Dave

When i look in the mirror at night it's like a smog behind. trouble is i try & drive it to carefully to stop the smoke.

Brian

lucky · Posted: Mon Jan 23, 2006 13:00 Post subject:

Grimbo · Posted: Tue Jan 24, 2006 22:30 Post subject:

if the "smoke' you can see is only in the rear view mirror at night, when some silly *beep* is sitting right behind you, then don't worry to much, i use a fiat van with one of the latest common rail, particulate filtered , iveco engines in it, and that still "smokes" at night with car lights behind. Also, how many modern cars have you followed that puff a big cloud of black smoke as the driver wellies it away from the lights ? if it runs smoothly , passes the MOT, then its probably ok, that said, the odd shot of injector cleaner can do no harm. Automarine Diesels in brighton are good, as is Ian at Lucas's in Tunbridge Wells. Smile

joinerman · Posted: Tue Jan 24, 2006 22:56 Post subject:

Grimbo

I have booked it into a deisel specialist for next week. They say it's probably over deiseling & they will tune the pump first before pulling the injectors out.

Brian

Grimbo · Posted: Tue Jan 24, 2006 23:04 Post subject:

Keep us informed, allways ready to learn Very Happy

joinerman · Posted: Tue Jan 24, 2006 23:06 Post subject:

Not going in till next thursday

Brian

lucky · Posted: Wed Jan 25, 2006 8:37 Post subject: