Thanks for all the replies and sorry for my late response. I finally got to this project again recently and decided to rebuild nikki Vapouriser. Rebuild went great but as someone had mentioned the injector body has a relief valve that remained stuck open. I have removed the plug that covers the adjustment screw to remove the needle valve to clean and reinstall. I am not sure as for adjustment procedure for the set screw but i believe the injector inlet pressure while running should be about 5 psi? Is that correct and do i use this screw to adjust this pressure. The truck is now running good but im not sure how to plug the set screw opening as it had a welch plug that i had to destroy to remove it. Any Input would be greatly appreciated
Thanks
Ralph ralphspa at hotmail dot com