11-27-2024, 08:51 AM
(This post was last modified: 11-27-2024, 08:52 AM by Duckbubbles.)
jcrouch-
Vapor lock has been pretty much eliminated by high pressure fuel injection systems. It could occur in carbureted systems where the fuel lines are heated by heat from various parts of the engine and the fuel vaporizes in the feed lines, as in cars mainly. Higher pressure elevates the point where fuel can vaporize. I've seen it on old carbureted cars that run 5lbs. fuel pressure or less. The mechanical fuel pumps wouldn't pump vapor.
My various RS's have from time to time exhibited the dreaded "double tap" starting where the first tap of the starter button would spin the engine with no firing. Release and hit it again and it fires immediately. What has been described sounds to me like low capacity battery.
Frank
Vapor lock has been pretty much eliminated by high pressure fuel injection systems. It could occur in carbureted systems where the fuel lines are heated by heat from various parts of the engine and the fuel vaporizes in the feed lines, as in cars mainly. Higher pressure elevates the point where fuel can vaporize. I've seen it on old carbureted cars that run 5lbs. fuel pressure or less. The mechanical fuel pumps wouldn't pump vapor.
My various RS's have from time to time exhibited the dreaded "double tap" starting where the first tap of the starter button would spin the engine with no firing. Release and hit it again and it fires immediately. What has been described sounds to me like low capacity battery.
Frank
'23 R1250RS, 11,000 mi. 2 yr., '03 R1100S BCR #6/200, '85 K100/1100RS- 38 yrs. 331,000 mi., '17R1200RS- 51,054 mi. (gone), '16 R1200RS- 28,322 mi. (gone), '11 R1200RT-30,000 mi. (gone), '05 R1200ST-58,000 mi. (gone), '96 Ducati 900SS/SP-89,000 mi. (gone), 560K+ BMW miles