not quite boaty...but I know someone will know!

[Matata]

I have a mitsubishi pick up with 140k miles on it. it doesn't miss a beat. I bought it with no service history and i'm servicing it and learning lots at the same time. Im doing the rocker cover and tappets this winter and while I'm there I'm thinking of removing the injectors and having them cleaned/serviced. I get the impression they are a very old mechanical injector. The pressure from the fuel pump opens the injector type..not electronic or solenoid. Is it a good idea to do this? Is it reasonably easy to clean them ? If so, who would you recommend? Are there springs inside them that only allow the injector to open at a certain pressure.Would these guys check the spray pattern?Ta for the advice Nik

 

[PaulRainbow]

If they're not broken, don't fix them.

 

[seaangler23]

Unless your having issue so don’t bother, Ann injector cleaner additive would do

 

[chrishscorp]

Unless your having issue so don’t bother, Ann injector cleaner additive would do

+1 if they work leave them well alone

 

[PuffTheMagicDragon]

On the other hand, if you are going to the trouble of checking and setting the valve clearances, why not have the injectors set properly at the proper pressure and the spray pattern observed?
You'll be starting your relationship with an engine that is, as far as it can be, at its optimal performance. In the grand scheme of things, the cost of having injectors serviced by someone who is specialised in small diesel pumps would not be excessive... if one avoids anything that is even remotely related to 'marine'.
Sometimes following the old adage that "If it ain't broke, don't fix it" might be too late. Would you choose that route if you were dealing with the brakes on a vehicle?

 

[savageseadog]

If it runs without smoke leave alone

 

[AntarcticPilot]

+1 for leave well enough alone. Injectors and Injection pumps are no-go areas for DIY work because of the very fine tolerances and need for extreme cleanliness when working on them. There's also a safety issue - the high pressure spray can easily penetrate skin, and cause nasty dermatitis that results in a permanent sensitivity to diesel. Our diesel course tutor was very gung-ho about working on diesels except for the injectors and injection pump. That said, he also said that they were unlikely to cause problems that would result in an engine not running - running badly and smoking, yes, but not running at all, no.
If the engine is running well and not smoking, it is unlikely that there is anything worth doing to the injection system anyway.