funwithfuel
Senior Member
The theory with the valve cover allowing boost into the crankcase is only on the electronic engines. Those were a combination unit of intake manifold and valve cover gasket the Boost pipe went straight into the top of the valve cover. The fact that you were able to loosen injector lines and create a miss for troubleshooting says that you have a pump line and nozzle engine so this is not one of your concerns.
Extracting nozzle injectors from an old conventional head can sometimes be very difficult you may need a special puller for that. Having having said that I would start spraying them up with penetrating oil and letting them soak. Regarding chasing the injector around see if it follows the injector or stays at the same hole is very valid and a common one that we all use from time to time. But again the downside is when removing the injectors if it is stuck to the cup you will run the risk of removing a cup with the injector.
Reading your posts it's nice to see that you are trying to troubleshoot it in a logical and methodical way rather than just throwing Parts at it
Keep up the good work
Extracting nozzle injectors from an old conventional head can sometimes be very difficult you may need a special puller for that. Having having said that I would start spraying them up with penetrating oil and letting them soak. Regarding chasing the injector around see if it follows the injector or stays at the same hole is very valid and a common one that we all use from time to time. But again the downside is when removing the injectors if it is stuck to the cup you will run the risk of removing a cup with the injector.
Reading your posts it's nice to see that you are trying to troubleshoot it in a logical and methodical way rather than just throwing Parts at it
Keep up the good work