| Engine starting after sitting a few months [message #369770] |
Mon, 23 May 2022 06:40  |
rjw
Messages: 697
Registered: September 2005
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Larry and John recently suggested a few things to do for "Starting an Engine That Has Been Sitting for an Extended Period".
https://www.gmcmi.com/wp-content/uploads/2020/06/weidner-starting-engine.pdf
"the 2000 RPM thing is important to throw oil up on the walls/rings as any priming does not do that. That’s why I don’t like cranking as too slow and those parts suffer. IMHO."
That seems like a lot to do if the coach has just been idle over the winter. Probably good to do if idle for multiple years.
I wonder what best practices would be if sitting for only for a few weeks.
If my coach has been sitting all winter, for first start I've been shutting off the EFI fuel pump and cranking the engine until I see oil pressure on the dash gauge. Then I would turn the pump back on and hit start. With EFI it always starts immediately. When I had the old Q-jet carb almost the same thing was accomplished by the time it started after setting the choke. Oh I don't miss those days.
I do the same thing if its been sitting for a few weeks.
I'm wondering if that is wrong approach? What do others do?
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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