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First inboard boat. 4.3, 1st time out ran fine while pulling
1st time out ran fine while pulling tube. No problems starting and stopping engine. Was slowing boat down and engine died. Couldn't get it started and acted like it was locked up. Nothing was out of range on gauges prior to stopping. … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 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
17,310 satisfied customers
We run a Mercruiser 4.3 with Thunderbolt Ignition with an Apha
We run a Mercruiser 4.3 with Thunderbolt Ignition with an Apha One tail. Boat is a Draco 2500. Engine runs in principle fine. Nevertheless, since the start of the season engine sometimes spontaneously… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have a 4.3 L Mercruiser engine that runs fine at speeds up
I have a 4.3 L Mercruiser engine that runs fine at speeds up to about 1500 rpm's, but when I get up to cruising speeds of 3000 rpm's and above, the boat will go for a short while then the engine slows… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have a 94 Mercruiser 4.3 LX with Alpha I out drive. After
I have a '94 Mercruiser 4.3 LX with Alpha I out drive. After tubing with kids, shut boat key off while in gear inadvertently, at idle speed. When try to re-start, engine turns a partial rev then loud … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
I have a 1992 powerquest with a 5.7l mercruiser magnum stern
I have a 1992 powerquest with a 5.7l mercruiser magnum stern drive engine. When I put the boat in idle, it shifts into gear when I start to accelerate and the RPM's reach approx 2000, it feels like th… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
So i have a 1993 Larson cabrio 270 with twin mercruiser 4.3
So i have a 1993 Larson cabrio 270 with twin mercruiser 4.3 I/Os Alpha drives, recently when i am docking or leaving the dock or at slow speeds when i am shifting from forwards/reverse to nuetral the … read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
1,780 satisfied customers
Hi, Ive got a problem to start my Mercruiser 5,7 LX V8 Thunderbolt
Hi, I've got a problem to start my Mercruiser 5,7 LX V8 Thunderbolt V with Bravo drive. It just turned off at full speed during water skiing, got some see water through exaust manifolds and I couldn't… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
I have a 66 evinrude 40 horse big twin electric start what
I have a 66 evinrude 40 horse big twin electric start what is the fuel to oil ratio is it 40 to 1 or 50 to 1. It ran great for two days here at the lake but then now when putting slowly for awhile you… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,729 satisfied customers
I have 2001 4.3 mercruiser. Starts fine, idles fine but when
I have 2001 4.3 mercruiser. Starts fine, idle's fine but when you go to accelerate it gets up to almost plane and then acts like you turned the key off. It also diesels after you turn it off. I think … read more
Whitecap36
Whitecap36
Service Manager/Technician
Vocational, Technical or Trade Scho
1,545 satisfied customers
I have an 88 regal sebring 195 with the 4.3 lt mercruiser.
I have an 88 regal sebring 195 with the 4.3 lt mercruiser. the last two times we used the boat last year we had trouble starting it. he engine would turn but there was no sign of any fire. about an ho… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
Mercruiser 4.3 on a Bayliner 205 -- accelerate, and seems as
Mercruiser 4.3 on a Bayliner 205 -- accelerate, and seems as though the prop doesn't engage. speed very slowly comes up, and never gets about 25mph. Last weekend, had similar problem, couldn't get ove… read more
Whitecap36
Whitecap36
Service Manager/Technician
Vocational, Technical or Trade Scho
1,545 satisfied customers
Have 4.3 LX mercruiser 1996 has New Rotor,plug wires,spark
Have 4.3 LX mercruiser 1996 has New Rotor,plug wires,spark plugs, Module, sending unit inside the distributor and cap , coil also. It has a thunderbolt ingisition. Cruises down the lake them misfires … read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
I have a 92 Bayliner with a V6 mercruiser 4.3 engine in it.
I have a 92 Bayliner with a V6 mercruiser 4.3 engine in it. It has recently been tuned up and had repairs done on starboard exhust manifold (replaced with new one). The boat runs well at high and low … read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
I have a 01 90 Yamaha. I use it on a weekly basis. When
I have a '01 90 Yamaha. I use it on a weekly basis. When I bought the boat in '04 I used ethenol fuel for about 4yrs. The motor started stalling at Idle about a year ago. I switched from ethenol to no… read more
Whitecap36
Whitecap36
Service Manager/Technician
Vocational, Technical or Trade Scho
1,545 satisfied customers
have a 198 evinrude 3 cylander 70. Starts fine and runs fine
have a 198? evinrude 3 cylander 70. Starts fine and runs fine at 1/4 to full throttle. if idling or slow speed motor will run fine then just quits ( like it is starved for gas) motor is then difficult… read more
Expert
Expert
HI,I have a 20 bayliner with a 4.3-lx/v6 alpa one,my question
HI,I have a 20' bayliner with a 4.3-lx/v6 alpa one,my question is the boat keep surging ,dies and then go's but never right getting worse, fuel presure good ,had carb off cleaned seemed worse after th… read more
Master Tech
Master Tech
Service Manager/Technician
Vocational, Technical or Trade Scho
1,167 satisfied customers
I recently put my boat in the water. The boat ran great for
I recently put my boat in the water. The boat ran great for the first 30-45 min. After driving the boat at around 25mph it began to make a popping sound (like a misfire/backfire). If I slow the boat d… read more
ROCKET
ROCKET
MASTER CERTIFIED TECH
Vocational, Technical or Trade Scho
426 satisfied customers
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Jason

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Tan

Tan

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Jeff G.

Jeff G.

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Captain Dave

Captain Dave

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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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