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Posts: 99
| I am running a 1998 Ranger 692 which was repowered in 2007 with a 175 Pro XS (new in 07 now has 530hrs) mounted in the 3rd hole. I am carrying a 9.9 kicker motor, 4 very large batteries plus gear with two 200lb guys. The Merc has a Express 21 pitch prop which runs 50mph at 5600rpm. Up till this year I have had no issues. It seems like once this heat set in and water temps got up to 80 degrees back in early July I have been having problems. Whats happening is when I throttle down to take off the motor starts choking out. I had a dealer look at it and they say the motor runs fine in the tank and has no issues. Long story short I figured out when we come out of the hole the motor is dropping too low in the water column and covering the exhaust vent which is causing the hesitation/bog. If my partner goes up to the bow of the boat it will take off fine. I am working with Ricky out of Brainerd and he had me try out a Rev4 19p and with all 4 plugs removed the problems seems even worst. He advised me to try and raise the motor up one hole and see if that helps. I was just wondering if anyone has any insight on what is happening and if raising the motor up would help? Going up 3/4" don't seem like much? I mean when I throttle down this motor dives, seems to me it would have to go up a few inches to solve the problem. Thanks for any help, Kevin | |
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