Help please! New to this forum.
Engine is very hard to start and seems to backfire occasionally. Tries to go but seems starved for fuel. Once started it runs fine even at idle.
Per scanner no fault codes being generated.
Passed all scanner induced checks - IAC, relays, coil, injectors
Have 2nd engine on vessel so have swapped/replaced the following with no change:
fuel pressure shows 45 psi when running then drops and holds at about 38.
Any ideas would be greatly appreciated!
Engine is very hard to start and seems to backfire occasionally. Tries to go but seems starved for fuel. Once started it runs fine even at idle.
Per scanner no fault codes being generated.
Passed all scanner induced checks - IAC, relays, coil, injectors
Have 2nd engine on vessel so have swapped/replaced the following with no change:
- fuel filter - no noticeable contamination
- spark plugs
- idle air controller
- throttle position sensor
- coolant sensor
- manifold pressure & temp sensor
- crank position sensor
- fuel pump relays
- ECM
- coil
- ignition module
- battery
fuel pressure shows 45 psi when running then drops and holds at about 38.
Any ideas would be greatly appreciated!