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fault scan will provide precise information for you

will need fual codes scanned for precise info on causes , please use the 3.0l forum for your engine 2 more down the list , good luck JOE

^^^^^^^ +1 exactly please use the 3.0l forum for more info on those engines

spark on all 6 ?? you got any pics of those plugs , you may have a detonation problem going on there , also may need to isolate non working cyls

GEN 2 gearcase in a HP application i would use solid hub on the 1.25 shaft although i have not seen the hard shift with the SSR hub and have ran one on one of my personal boats GEN 1 case

oil pump prime is recommended with diagnostic equipment , lap the reed cages as described on this forum ,do a search here form good info, reeds that are to tight or to loose can cause some running...

recommend having faults read /scan to determine alarm cause , possible low voltage

inspect top edge closely most seem to crack there

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^^^^ +1

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fuel ;pumps will be a buzzing sound port side of engine

^^^^+1

fuel psi at idle please ????

^^^^^+1 eliminate boat as source of problem use a separate fuel supply and new OEM fuel line no afterjunk

inspect reed /are they the original carbon fiber????

try connecting orange wires together and activate trim

new check valve doesn't mean good check valve / have seen some new bad ones

most i see are 170*

89984T5 / has no top housing

agree

very low batt voltages

shouldn't be a problem replacing would check for broken wire first

does it have a limit switch installed in trim system under cowling , possible problem