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I own a 17 ft deep V aluminum Boat with a 1988/89 80 HP
I own a 17 ft deep V aluminum Boat with a 1988/89 80 HP Mercury outboard (Serial #OC124352) with a 21 inch prop on it. I am having trouble getting on full plane with the throttle/shiftier all the way … read more
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Noel Schembri
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MY 2005 TROPHY WITH A 5.0L MPI HAS A FAULT. WHEN YOU
MY 2005 TROPHY WITH A 5.0L MPI HAS A FAULT. WHEN YOU INCREASE THE RPM FROM IDOL TO 1000 RPM THE TACH READS DOUBLE (2000 RPM). WHEN YOU INCREASE THE RPM TO 3000 RPM THE TACH READS DOUBLE (6000 RPM). TH… read more
Jason
Jason
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Vocational, Technical or Trade School
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Last year before I put the boat away winter I had a new
Last year before I put the boat away for the winter I had a new tilt/trim switch put into the shifter handle. The marine mechanic told me that he had to adjust the cables in the shifter. This past spr… read more
Tan
Tan
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Hi, I am wondering about what is the optimum operating rpm
Hi, I am wondering about what is the optimum operating rpm for 1994 Mercruiser 7.4l v-8. Any idea… read more
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Hello, I have a 2002 Volvo Penta 4.3gl. 320 hours on the
Hello, I have a 2002 Volvo Penta 4.3gl. 320 hours on the motor and serviced by volvo penta dealer since purchase new in 2003. At High RPM, two issues occur. 1) adjusting the power trim cause the engin… read more
Jason
Jason
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I have a ticking noise coming from my Volvo pinta 5.7 gsi
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Tan
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i have a 95 sleekcraft with mercruiser bravo 7.4 and bravo
i have a 95 sleekcraft with mercruiser bravo 7.4 and bravo 1 outcrive. i can drive about 15 minutes at full throttle but am only getting 3800-4000 rpm now.after that the boat will rev up fine to 5000+… read more
Jason
Jason
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i have a 2001 125hp mercury salt water series, this past weekend
i have a 2001 125hp mercury salt water series, this past weekend while running at cruising speed and about 4k rpm it began to have a surge, i came off plane aqnd idled for maybe 30 secs and reved it a… read more
Tan
Tan
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I have a 1987 Alpha 1 Mercruiser 3.7liter I/O which I have
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Tan
Tan
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When I asked the last question my boat was in the shop and
When I asked the last question my boat was in the shop and the tech said it was either the tach or control module on the motor. he did not have anything to check it. I've since got the boat back and r… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I just purchased a boat with a volvo 5.0GXi-b. It is a new
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Jason
Jason
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I have 1989 johnson 150 that has no out of the hole power have
I have 1989 johnson 150 that has no out of the hole power have a14.5x19 prop runs ok once gets out of the hole… read more
Jeff G.
Jeff G.
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you helped me back in april about the tach jumping when throtle
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Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a 16 ft aluminium boat with a 50 HP yamaha outboard
I have a 16 ft aluminium boat with a 50 HP yamaha outboard , when we have more than 2 people in the boat and we are just starting off, the motor won't get more than 3000 RPM's and the boat won't get o… read more
Scott Martin
Scott Martin
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Yamaha Exciter Boat 1998 270hp model. The motors shut off once
Yamaha Exciter Boat 1998 270hp model. The motors shut off once boat reaches speeds excess of 40 mph or 5500 rpm. It will pull out of the hole at full throttle and will run all day at 25 mph or less th… read more
Jeremy R.
Jeremy R.
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I have a 1974 merc 650. runs great but I was wondering if going
I have a 1974 merc 650. runs great but I was wondering if going from a 13 pitch to an 11 pitch would make my boat go faster without stressing the engine. I do not have a tach so rpms are not known. Th… read more
ROCKET
ROCKET
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1994 Cobra SX 5.0 L Multipoint fuel injection - starts fine,
1994 Cobra SX 5.0 L Multipoint fuel injection - starts fine, runs fine until it gets to about 3400 rpm. It then acts like the kill switch is being toggled. If I back it down just under that rpm, it is… read more
TOM
TOM
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which prop goes with a d3 190 i have x4 on at the monent and
which prop goes with a d3 190 i have x4 on at the monent and the boat will not plane my boat is a sealine 328. i have had x5 before this. twin engine diesel.will not get on plane i can only get 3000 r… read more
Dan Boy
Dan Boy
Amusement ride technician
High School or GED
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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