1B791202
2010 250 XS
I have an off idle miss, in gear 1500-2000 rpms most notable, sluggish to get on plane, loss of 15 or so mph on top end.
NO alarms No strange noises
changed plugs no improvement original plugs looked fine
changed VST fuel filter no improvement VST perfectly clean
What are my next items to check?
All shops certified to work on it are booked 2-3 weeks out.
THANKS in Advance.
Check available voltage to each cylinder and test wires for open ckts as well as arching to grounds
Thank You Leon Pugh
explain the voltage to each cylinder pleaseOriginally Posted by lpugh
the later I understand
Inspect coils and perform a spark test as the problem is occurring.
OK
Everytime I've had a coil failure the sparkplug associated with that coil would be wet, not this time.
Plug may or may NOT be wet (loss of spark can be intermittent).
Any warning Horns?
Compression, and fuel Quality/Delivery/Air-Fuel Pressures checked?
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no alarms smart craft gauges no horns normal single beep at key up
air and fuel pressures not checked yet buddy dropping of a set of liquid filled test gauges
fuel quality good half of tank used before miss/loss of power
testing compression this evening
idles smooth no unusual noises
removed belt air compressor no play tensioner and pulley ok
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