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I have a 2000 560 searay sedan. at 14-1900 rpm I get a
I have a 2000 560 searay sedan. at 14-1900 rpm I get a vibration. we changes props, shafts, did alignment, everything we could think of and still have it. it seems to lessen with full fuel tanks and g… read more
Boat Doc
Boat Doc
253 satisfied customers
I have a 2017 Mecury 150 hp 4 stroke with 26 hrs on it.
I have a 2017 Mecury 150 hp 4 stroke with 26 hrs on it. while coming back to the ramp I noticed a vibration that would come and go. After getting it on the trailer and pulled the drain plug I just spu… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
T a submerged rock at about 6-8 knots about 7 PM tonight in
Hit a submerged rock at about 6-8 knots about 7 PM tonight in my 1986 Ski Nautique 2001. Wheel jerked in my hands, log metallic sound, boat stalled out. Restarted boat, engine not happy, ran a bit rou… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I'm considering buying a 1998 Bayliner 3988 with Cummins
I'm considering buying a 1998 Bayliner 3988 with Cummins 330s with 2200 hr. Both engines required replacement heads this spring. They turn out to have been over-propped as evidenced by acheiving only … read more
Jason
Jason
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Vocational, Technical or Trade School
22,043 satisfied customers
I have an 2000 Albin 28 TE, with Yanmar diesel 300 hp.
I have an 2000 Albin 28 TE, with Yanmar diesel 300 hp. Usually run at below 2400 rpm but have noticed that somewhere around 2400 there is a suggestion of vibration in the boat that intensifies as get … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have 1999 bayliner 3988 with cummins 330 hp turbo engines
I have 1999 bayliner 3988 with cummins 330 hp turbo engines with 1100 hours on each. Yesterday my starboard engine propeller drip less shaft seal started to take on sea water. I was able to use a hamm… read more
K. Kergan
K. Kergan
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Vocational, Technical or Trade Scho
1,031 satisfied customers
Mastercraft Prostar 190, 1986, makes a very loud grinding noise
Mastercraft Prostar 190, 1986, makes a very loud grinding noise generated somewhere between the engine and prop.… read more
Tan
Tan
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Certified Marine Technician
11,409 satisfied customers
My motor boat has 2 Cummins VT 903M installed as the two main
My motor boat has 2 Cummins VT 903M installed as the two main propulsion engines. Both used to give me 2800 rpm max. Now recently one engine is only giving me a max rpm of 1900 whilst the other is fin… read more
Diesel Boat Doc
Diesel Boat Doc
High School or GED
120 satisfied customers
rebuilt 260 hp engine installed in 1972 grew [merc] tried 4
rebuilt 260 hp engine installed in 1972 grew [merc] tried 4 props last being 23 pitch alum rpm 5500 should be max 4800 mechanic suggests 23 pitch ss local propellar guy provided 25 and 27 pitch al and… read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
2GM20FC - +/- 400 hours on engine - Engine runs up with no
2GM20FC - +/- 400 hours on engine - Engine runs up with no load but will not run past 2000 rpm under load (at dock in gear) and blows black smoke / unburned fuel. Air filter has been cleaned. What are… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I just purchased a Bravo 3 complete outdrive serial # XXXXX
I just purchased a Bravo 3 complete outdrive serial # XXXXX with 220R gears. It is a 1994 model. I am hooking this up to a 1992 OMC 454, King Cobra engine that has been rebuilt, and now has 395hp and … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
Not sure my question was received. My Yanmar 2gm is making
Not sure my question was received. My Yanmar 2gm is making knocking sounds above 2000 RPM in forward… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
You answered a question for me last week thanks. I have a
You answered a question for me last week thanks. I have a new one; Volvo 5.7 GI-F DP drive 2006, aluminum props. I get a vibration at about 2000 RPMs. It comes on at about 1900 RPMs and goes away at a… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have 8v92TA s in my boat. They were just overhauled and now
I have 8v92TA s in my boat. They were just overhauled and now the maximum rpms are 200 less than they should be. Could it be an injector problem even though the mechanic tells me they are all working?… read more
Diesel Boat Doc
Diesel Boat Doc
High School or GED
120 satisfied customers
heard aslight whin from out board last weekend mercury 60 four
heard aslight whin from out board last weekend mercury 60 four stroke 9 months old done app 100 hrs while flushing with water at home 3000 rpm no noise it appears to be when prop under load can move p… read more
Whitecap36
Whitecap36
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Vocational, Technical or Trade Scho
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I have a 48 motor yacht with twin Cummins 6BTA5.9 rated at
I have a 48' motor yacht with twin Cummins 6BTA5.9 rated at 330HP. I believe the same block also is used to get the standard 370HP apparently with some type of fuel input modification. My questions ar… read more
Diesel Boat Doc
Diesel Boat Doc
High School or GED
120 satisfied customers
Hope you can help me. I have a 30 sleek with a 500 hp and
Hope you can help me. I have a 30' sleek with a 500 hp and a bravo one out drive. the boat has 522 hrs on it. Approx. 2 years ago the drive got stuck in forward and would not go into reverse. I had it… read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
I have a bayliner 2755 engine was a 7.8ltr 300 bhp i have just
I have a bayliner 2755 engine was a 7.8ltr 300 bhp i have just had a new 5.0 ltr mpi 260 bhp fitted the same outleg etc only now at 2000 rpm all i get is cavation all seems ok to 2000 rpm then it just… read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
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