Hi y'all, We have 2006 320 Sundancer with 350 MPI Horizon engines. Starboard engine stalls out slowly after running for 60 - 90 minutes. Fuel rail pressure drops from ~45psi down to 10 psi then 5 psi and stalls out slowly (takes 30 - 60 seconds to stall out). Engine will restart after sitting about 60 minutes and run normally for about another 60 minutes when it stalls out again repeating the process.
ECM diagnostic check showed no electrical faults/codes. Need help diagnosing the root cause. Looks like it could be a fuel pump issue.. is there a way to confirm if it is a fuel pump issue? Hate to spend thousands on a new fuel pump module without confirming that that is the problem. Has anyone experienced this and solved it?
We run non-ethanol fuel only, have new fuel filters, 280 hrs on engines and well maintained. Looks like the original fuel pump modules but difficult to confirm. Help!!
