Re: Vibration at Idle
Ok, I am not an expert, but this is what I found. I bought a set of used 7mm injectors due to a recent head change. I put it back together, and had a very rough running bus. (89 model with 5.9 BTA, and a VE rotary pump).
First make sure all cylinders are firing. Do this with a cold engine, and stay clear of the turbo. Start the engine and feel each exhaust flange. You will notice that each will warm within a minute. Often there is a cold one or two. Make notes on these.
Shut the engine down , remove the injectors from the cold cylinders. Have a shop check them for spray etc. Mine were not spraying, but dripping. You will see this with black smoke in the exhaust too.
6 new injector nozzles, the engine runs like a smooth diesel...
Remember, i am new to diesels, but have many years on Jet engines.