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How Do I? Diesel Fuel Injector cleaning?

archaeology_lad

In Fourth Gear
Hi,

I was wondering about using something to clean diesel fuel injectors internally. I have heard that adding a little bit of gas (petrol) to the fuel tank will help clean the injectors.

I also came across some cleaners for sale like Valvoline Diesel Injector Cleaner. Will products like these help to clean the injectors a little?

Does anyone have any experience with these products?

Thank you
 
Don't use gas, that would not be clever!

There are plenty of fuel system cleaners available, some are for diesel only and some are for gas only, others are universal. Can you get Greased Lightning over there? Another good one is Forte, Millers and Comma diesel magic.
 
I have used valvoline..usually after a service, sometimes between...we pay about a fiver a bottle, and it does 2 tankfuls.

You might think it makes it run better..which it does, as it is a cetane improver, and makes the fuel burn that bit better. It does seem to work for more than one tankful though, so it must make #some# difference to the nozzles, maybe. Jury is out...:)

We used to use a product called 'Diesel Aid', which we would buy from Land Ranger Services in Middlewich...now that was good stuff. 1ml per litre, 500ml bottle, £10. It went off the market and stopped being sold for some reason...it was good, cleaned the emissions right back, and gave 28mpg. Better starting too. Wonder what happened to the company?
 
Thanks for the link bob696...I'll be on the phone to them this afternoon. Damned good stuff!

Injectors, pegasus parts, Hows that? These are both the later type, with the spill rail on the top, the early type are about £24 and have a square block of metal clamping them to the engine head. Paddocks have them too.

Hope that helps!
 
Ta...A&K. Just noticed they arent asking for an exchange unit on injectors at Pegasus. Do paddocks still? I know they used to...same cost as the injector it used to be.

They sold me one for the early type about ten years ago, I went to the store to get them rather than send them in the post, pay surcharge etc.. I stripped mine out, took them in, and swapped them over the counter. One of the new/recon ones thay gave me, the spill rail thread was fubar, didnt notice until I came to fit it. IN THIER YARD! They denied responsibility. Wanted me to pay for another, plus surcharge as it was stripped. I refused of course, had big argument, reminded them that customer was always right etc etc...saw head boy, who agreed, I got new recon injector. I haven't bought parts from them since.
 
Out of curiousity... who originally built the fuel injectors and the fuel pump for Land Rover? Was it done in house, or was it done originally by Lucas/CAV?

Is it hard to get new tips?
 
Are most of the injectors rebuilds? Is it next to impossible to find new ones? Lucas a.k.a. CAV a.k.a. Delphi (now) built them. Wouldn't somone have new fuel injectors available?

Would Bosch injectors be comparable... you will have to excuse me, as I am learning about my rover, and the mechanics in general. Is it possible to find injectors made by one of the competitors that fits right in... or is that wishing for too much?
 
Injectors are readily available over here, new ones are very cheap so not worth getting them reconditioned. I think the S3 ones also fit early 90/110 2.5D engines too.
 
Out of curiousity... who originally built the fuel injectors and the fuel pump for Land Rover? Was it done in house, or was it done originally by Lucas/CAV?

Is it hard to get new tips?

Originally made by CAV/Lucas as you surmise, and bought in for use.

The tips/needles are available, I used to take my whole vehicle up to Land Ranger Services in Middlewich, Cheshire, and strip the injectors out there and then, with the engine warm, get them tested, and replace any that were needed... They would strip them and recondition them while I waited. I would assume they bought the parts straight from Lucas CAV. There is a Lucas CAV dealer near here too, and I know folk who have had them redone on the premises..I was chatting with a guy last week who had taken his distributor pump there to have it reconditioned. It cost about £200 he said, but seems like it was worth the money.

The testing equipment is expensive though... that I do know. I guess if you could find a Lucas CAV agent near you that might be your way forward.
 
Not trying to hijack your thread, but Big Sandy mentioned a old type injector. I see Paddocks have old and new type.

Question: Can you tell by looking at the injector on the engine what type it is?

Hope it is not by engine number. Mine is a Santana with a Spanish engine number.

Are most of the injectors rebuilds? Is it next to impossible to find new ones? Lucas a.k.a. CAV a.k.a. Delphi (now) built them. Wouldn't somone have new fuel injectors available?

Don't know about B.C., but here in Panama I check with the Massey-Fergason tractor dealer. Some of those use the Perkins diesel and some parts are interchangable. I have parts for a tractor starter motor on my SIII.
 
Yes, the easy way to describe a difference, the new type have the spill off rail on the top of the injector, and the old type have it on the body, same as the fuel feed. (and in all probability, it would be a brass spill rail)

Also, they are held to the head with a metal block, not bolted through the injector. You can see the main differences in the attached, from the SII &IIA workshop manual. I was hoping I might have had a photo of one, but sadly no...days before digital cameras!
 

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I was told my injectors on my 200tdi 90 might still be blocked, as it's still very sluggish going up the hills. The mechanic that did the service thread 'a grand service' said he flushed injector cleaner through twice.
Is it easy to change injectors and how many is there?
Roy
 
One injector per cylinder.

Pretty straightforward, though they sometimes stick in the hole...dirt, rust etc.
When you get new/recon injectors they usually come with all the washers and seals they need..can't comment on the 200tdi, as I havent done one personally, but usually there is a copper washer and a dimpled washer. They usually remain in the hole, which is a pest..the dimpled one at the bottom gets stuck with carbon, but a flat bladed magnetic screwdriver gets them out okay (you push it into the hole in the washer...) Again, I cant say that 200tdi injectors will have those, somebody else will tell you fully, I am sure.

I would say though, if you do change them, do it with the engine warm, it makes life easier!
 
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