A key and two buttons? One for glow plugs and silence the low pressure alarm and one for starting? If so, start with jumping the start button. Turn the key on, press the pre-heat button and jump across the contacts on the back of the push button switch. If it turns over strongly, your start button is dirty.
Sometimes a start switch will get "carboned up" which can result in poor contact. -- Dennis C. Touche' 35-1 #83 Mandeville, LA On Fri, Jul 31, 2020 at 11:44 AM David Knecht via CnC-List < cnc-list@cnc-list.com> wrote: > This is a Universal M4-30. When I bought the boat, I had starting issues > and cleaned all the grounds and have since replaced the wiring harnesses. > It has been 8 years, but the reason I was skeptical of a ground issue is > that the engine has started every time on the first try when first warming > the glow plugs. And it has started on the second try both times when not > using the glow plugs. Does it make sense that a bad ground would work that > way? Dave > > S/V Aries > 1990 C&C 34+ > >
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