Rebuilding injectors
 

My 1982 US spec 300TD needs some attention to the injectors, it's got about 170k on it (we think) and I'm getting a bit of uncombusted fuel when the engine is cold, which is gone when it's warmed up. And these are more then likely original injectors.

I have a much newer set of injectors from a Euro 300TD (non-turbo), will those fit and work on my engine? They look about the same, but I'm thinking that the pressure and amount of fuel they squirt will be different.

Can they be rebuilt to fit my car?

They can be rebuilt and put into your 82, but the turbo injectors are 135 bar instead of 115 bar, which are in the NA engines. You can bump up the pressure with a thicker shim inside the injector. But it's trial and error to get the pressure right. You have to take the injector apart and measure the shim, find a thicker shim. Put it back together and pressure test it. Then adjust again if the pressure is off.

There are undoubtedly plenty of turbo injectors actually popping at 125 bar, but that is not the specification. Unless you know something that I don't.

You need to find the correct opening pressure and reset the opening pressure.

The Injector spray has to push against the density of the density of the compressed Air inside of the Cylinder.

On the Turbo Engine when the Turbo kicks in even more Air is compressed in the Cylinder and that Air is denser than the non-turbo Engine; so the opening pressure on the Turboed Engines is set higher in order for the Injector spray to penatrate the denser Air better.

So I'll get the existing injectors looked at.

Thanks guys!

What I know is that I mistyped, It should be 135bar.:P