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1994 7.4 merc bravo 3 power surges at high idle, boat runs
1994 7.4 merc bravo 3 power surges at high idle, boat runs fine at 40mph anything over that starts to bog down. What I have done so far. Removed anti siphon valves at top of both tanks. Replaced cap, … read more
Tan
Tan
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Certified Marine Technician
11,399 satisfied customers
3.7L. 165 4cyl mercruiser engine 1988 at idle engine runs
3.7L. 165 4cyl mercruiser engine 1988 at idle engine runs fine...apply gas speed increases then slowly dies to point of stalling if not taken out of gear or starts accelerating then engine starts chok… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
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I have a 2001 Searay w/ 4.3 L mercruiser stern drive
Hello. I have a 2001 Searay w/ 4.3 L mercruiser stern drive Alpha I w/ Thunderbolt V ignition system. Recently rebuilt motor due to improper winterizing, cracked block. I ordered short block marine en… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,399 satisfied customers
On a 1991 sea ray310 express w/T 7.4 mercruiser On each gas
On a 1991 sea ray310 express w/T 7.4 mercruiser On each gas tank there is a filter or seperator with what looks Like a selenoid valve or a electric fuel pump in thr gas Line. What is it and it's purpo… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,399 satisfied customers
I just had a 2007 ETEC 90 serviced. Now at full throttle the
I just had a 2007 ETEC 90 serviced. Now at full throttle the motor surges between 5100 and 4600 RPM. I have bypassed the water separator, and left gas cap open for insured venting, no effect. Any gues… read more
Tan
Tan
MerCruiser Certified Technician
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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
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Hello, I have 7.4 l mercruiser that are have been fully rebuilt.
Hello, I have 7.4 l mercruiser that are have been fully rebuilt. I was on the water yesterday and the starboard motor started to pop and spudder trying to get on to plane. When I slow the engine to 15… read more
Jason
Jason
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Vocational, Technical or Trade Scho
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Hi Jeff, Hoping you can help with a suspected fuel starvation
Hi Jeff, Hoping you can help with a suspected fuel starvation problem. I have a 1985 Mustang 2000 with a rebuilt 454 that won't rev over 3300 - 3500 rpm - it coughs and splutters. It also coughs & spl… read more
Jeff G.
Jeff G.
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I have a 7.4 Mercruiser fuel enjected in a 2000 Sea Ray 340.
I have a 7.4 Mercruiser fuel enjected in a 2000 Sea Ray 340. Both engines are not idling correctly upon start up. I have to increase the throttles to keep them running. If I bring them back to idle, t… read more
Abiorca
Abiorca
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Vocational, Technical or Trade Scho
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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
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
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Vocational, Technical or Trade Scho
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I have a 2003 9.9 hp mercury outboard that I use for a kicker
I have a 2003 9.9 hp mercury outboard that I use for a kicker on my 36' catamaran. It runs fine in neutral, and in gear when we are under sail, but when I drop the sails and put it under load, it does… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
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I have a 1986 21.5 foot bayliner Bowrider. Purchased 3 years
I have a 1986 21.5 foot bayliner Bowrider. Purchased 3 years ago with a volvo penta GM 305 with rochester quadrajet. The secondaries would never fire. Due to a new boater right of passage I had to rep… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,399 satisfied customers
1996 bravo 3 mercruiser - 5.7L - on a chapparal - inconsistent
1996 bravo 3 mercruiser - 5.7L - on a chapparal - inconsistent performance at high speed. Starts to lose rpm after running fine at 3000 rpm+ for 15-20 minutes. If I try to throttle up it doesn't rever… read more
shane j forrest
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270 satisfied customers
Have a 94 Mercruiser 7.4 L (carb) w/Bravo II outdrive. Engine
Have a '94 Mercruiser 7.4 L (carb) w/Bravo II outdrive. Engine will start and run fine for 20 minutes (boat gets on plane with no problem), then motor will start to act like it's going to stall...so I… read more
mercmastertech
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1991 5.7 LITER Mercruiser 4 BARREL Quadrajet carb. Mechanical
1991 5.7 LITER Mercruiser 4 BARREL Quadrajet carb. Mechanical fuel pump. Boat wants to flood out running at idle. Rebuilt carb and new mechanical fuel pump still same problem. I want to check fuel pum… read more
Mechman45
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Vocational, Technical or Trade School
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2002 mercruiser 4.3 V-6, carberated; started stalling when ...
2002 mercruiser 4.3 V-6, carberated; started stalling when accelerating, and now stalls after 30-40 seconds of idle. fuel filter/water seperator is new, carb filter clean, fuel pump removed and tested… read more
Larry B.
Larry B.
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High School or GED
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I have a 3.0L Mercruiser marine engine in my boat...it ...
I have a 3.0L Mercruiser marine engine in my boat...it starts easily enough but when I put it into drive (forward) it usually backfire and stalls unles it is at a very low speed/rpm. It revs high in n… read more
Pappy's Sales and Service
Pappy's Sales and Service
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