Hoplite808
Well-Known Member
- Jan 11, 2022
- 507
- Boat Info
- 1996 Sea Ray 270 Sundancer
- Engines
- Mercruiser 7.4 LX MPI EFI (Gen. V)
For those suggesting that I scope the intake or try to unplug the fuel injectors while its running that's not really feasible. This engine has a plenum that houses all the sensors and the throttle body. In order to gain access to the injectors in any way the plenum has to be removed. I can test fuel pressure at the rail which holds at 37 psi throughout the entire throttle range. But testing items under the plenum while the engine is running is just really really hard to do. I don't have any photos of the plugs but they are all new and from the few hours they have run on the engine they all are slightly light brown and show no indications of any damage, oil or carbon fouling.