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1985 merc 5.7 260.hp new cap plugs ign coil runs great
1985 merc 5.7 260.hp new cap plugs ign coil runs great starts great shuts down at any rpm wont start till next day … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
18,955 satisfied customers
My boat wont go over 3200 rpm at full throttle. I have
My boat wont go over 3200 rpm at full throttle. I have changed out all fuel components plugs wires distributer and cant figure it out. … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
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2000 sea ray with mercruiser 5.7 wont go full rpm, not above
2000 sea ray with mercruiser 5.7 wont go full rpm, not above 3400 at full throttle on the water. … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
18,955 satisfied customers
Have 1996 mercruiser 7.4 carbureted engine that starts great
Have 1996 mercruiser 7.4 carbureted engine that starts great and runs good to about 2200 rpm. Struggles to get above this level. If I back down near idle I can get it to 3000 rpm before it quickly fal… read more
Tan
Tan
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Certified Marine Technician
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When out about 2 weeks engine was running fine up too 1800
When out about 2 weeks engine was running fine up too 1800 rpm went up too 2200 started breaking down intermittently went fishing any way. 4 hrs later when coming home same problems except at 3200 rpm… read more
Tan
Tan
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hello! I have a 1998 240cs stingray with a 5.7 mercruiser bravo
hello! I have a 1998 240cs stingray with a 5.7 mercruiser bravo 3, I have a top speed problem after 3/4 throttle for 10 min or so the motor seems to drop rpm's and occational backfire!? I put plugs, c… read more
K. Kergan
K. Kergan
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I have a 1997 Mercruiser 5.7, throttle body fuel injection. When
I have a 1997 Mercruiser 5.7, throttle body fuel injection. When you accelearte full throttle from a an idle it back fires once at about 3000-3500rpm and then accelerates normally. The tach reads corr… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
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My 3.0 Mercruiser starts great. When I put it into gear, I
My 3.0 Mercruiser starts great. When I put it into gear, I can only get to a very moderate speed, and it dies every time at the same speed. Thanks, Jim… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have a 1997 Bayliner Capri 2050 SE with a 5.7 Mercruiser
I have a 1997 Bayliner Capri 2050 SE with a 5.7 Mercruiser EFI V-8. It started backfiring on heavy acceleration or wide open throttle. Did a complete tune up (plugs, cap, rotor, wires, fuel filter, et… read more
K. Kergan
K. Kergan
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Vocational, Technical or Trade Scho
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I have a 2005 Bayliner 5L mercruiser that started this morning
I have a 2005 Bayliner 5L mercruiser that started this morning then stalled. When trying to start it will run for a few seconds and stall. The fuel system seems fine as I checked the carb and fuel is … read more
Jason
Jason
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Vocational, Technical or Trade School
18,955 satisfied customers
I have a 350 inboard outboard, 5.7 liter mcm engine mercruiser
I have a 350 inboard outboard, 5.7 liter mcm engine mercruiser in a boat. the engine RPM's will not go pass 2100 RPM's before is strat missing and poping or backfiring. The engine start great and will… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
18,955 satisfied customers
backfire problems 2001 4.3 mercruiser boat (backfires through
backfire problems 2001 4.3 mercruiser boat (backfires through carb) when trying to get up on plane,also when at home on hose when moveing throttle from nuetral to full throttle quickly. seem to have s… read more
Captain Dave
Captain Dave
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Master's Degree
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i have a 2006 monterey with twin gxi-e 5.0 volvos. i have
i have a 2006 monterey with twin gxi-e 5.0 volvo's. i have been having trouble with my port engine for months, it cuts out, takes fits and won't start after sitting for one day, it shows no codes in t… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a 2002 Rinker Captiva 212 w/ mercruiser 5.7 liter fuel
I have a 2002 Rinker Captiva 212 w/ mercruiser 5.7 liter fuel injected, the boat runs great for a couple of hours cruising and pulling, then it will begin to cut out almost to the point of dying while… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
My 1996 Mercruiser (5.7 ltr) is having difficulty starting-
My 1996 Mercruiser (5.7 ltr) is having difficulty starting- ignition system (starter, coil, distributer cap, rotor and plugs are all brand new. When boat does start it runs great under med- full throt… read more
Joe
Joe
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Vocational, Technical or Trade Scho
1,392 satisfied customers
I have a 1995 4.3 L 4 barrel mercrusier. Yesterday I noticed
I have a 1995 4.3 L 4 barrel mercrusier. Yesterday I noticed some water in the spark arrestor and on the intake. I checked the oil it looked like no water there, but the oil filler cap and breather ho… read more
Pappy's Sales and Service
Pappy's Sales and Service
Vocational, Technical or Trade Scho
586 satisfied customers
Hi, I have a 1995 Mercruiser 4.3L lx IV thunderbolt ignition.
Hi, I have a 1995 Mercruiser 4.3L lx IV thunderbolt ignition. Motor operates great cold at full throttle, 20 mins later the rpms bounce all over the place over 4000 rpms. I have replace carb, had a sp… read more
Pappy's Sales and Service
Pappy's Sales and Service
Vocational, Technical or Trade Scho
586 satisfied customers
I have a 2006 Malibu inboard with a 5.7 fuel injected ...
I have a 2006 Malibu inboard with a 5.7 fuel injected engine.The engine idles great but spits sputters and hesitates when given throttle and will only turn about 3500 rpms. It acts like it bumps again… read more
Pappy's Sales and Service
Pappy's Sales and Service
Vocational, Technical or Trade Scho
586 satisfied customers
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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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