Re: Hard starting Reply #25 – October 16, 2022, 01:39:17 pm After having an "annual" service on our coach, the engine stumbled right after starting. It also put out some white smoke at idle and sometimes while driving. It had never done this before. The tech checked the fuel pressure in several spots and found it was very erratic down stream from the Racor fuel filter head. It was very erratic during cranking and a bit erratic during idle. He discovered that the Schrader valve on the Racor head wasn't sealing. After replacing the Schrader valve, the fuel pressure was stable and the issues were gone. I doubt this is your problem, but who knows?Oldguy, thanks for mentioning the M11 needs info from the crank position sensor before starting. I've always been a bit concerned that it takes our engine 3 seconds to start, even though several techs have told me it was normal. Was used to the instant starts of the 24 valve ISB engine in the '98 Dodge truck I used to own. Quote Selected
Topic: Hard starting