For Fuel Rail issues, I would check with ThePelicanServcies.com
I replaced a Fuel Regulator Diaphram in my 225 Opti using one of their Diaphrams. I had issues with idleing and hard starting. Took to my dealer and said everything checks out. Finally found a leaking fuel diaphram. After checking online, I found that I DID NOT have to buy a NEW fuel rail...pelican services sells regulator diaphrams by themselves. I saved $1100...
I replaced a Fuel Regulator Diaphram in my 225 Opti using one of their Diaphrams. I had issues with idleing and hard starting. Took to my dealer and said everything checks out. Finally found a leaking fuel diaphram. After checking online, I found that I DID NOT have to buy a NEW fuel rail...pelican services sells regulator diaphrams by themselves. I saved $1100...