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I own a 2000 bay liner. It has a 4.3 liter thunderbolt
Hello Jason I own a 2000 bay liner. It has a 4.3 liter thunderbolt ignition it's a mercury mercruiser. I'm not getting a spark to my coil. My boat will turn over but won't start and I can't figure out… read more
Jason
Jason
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2003 4.3 mercruiser v6 test procedure in distributor
2003 4.3 mercruiser v6 test procedure for sensor in distributor and one for the module cranks but will not start… read more
Jason
Jason
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I have a 2003 4.3 mpi mercruiser. runs fine below 3000 rpm
I have a 2003 4.3 mpi mercruiser. runs fine below 3000 rpm Than dies. May restart right away or may take 20 min. changed crank sensor and ing sensor. cleaned fuel tank changed filter. Fuel pressure is… read more
Expert-Repair
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I have a 2003 4.3 mercruiser in a pontoon. would run fine
I have a 2003 4.3 mercruiser in a pontoon. would run fine for a period of time than shut down. thought i had bad fuel. Drained and cleaned the tank and changed the filter. Started and ran for a while … read more
Tan
Tan
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having a hard time finding the wiring diagram for the ignition
having a hard time finding the wiring diagram for the ignition for a 2003 4.3 mercruiser alpha1 gen 2. Its not getting fire cranks but no ressponse… read more
Tan
Tan
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Pulled the flame arrestor off carb and created a spark on my
Pulled the flame arrestor off carb and created a spark on my 4.3 mercruiser with thunderbolt ignition. Now I have no power at all. No ignition, no lights, no horn, no bilge pump ect.… read more
Whitecap36
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I have a 2003, 4.3 mercruiser. What is the correct diameter
I have a 2003, 4.3 mercruiser. What is the correct diameter and pitch for a 4 blade stainless steel propellor?… read more
Jason
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I have 2000 searay with twin 4.3 vortec mercruiser engines.
I have 2000 searay with twin 4.3 vortec mercruiser engines. Motors not firing. Mechanic replaced dozen electronic parts then said the tach was wired wrong. could a miswired tac keep motor from firing?… read more
Tan
Tan
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how do you reach and replace the ignition coil on a 4.3 L
how do you reach and replace the ignition coil on a 4.3 L v6 mercruiser engine on a tahoe tracker q 6 ?.there is no room… read more
Jason
Jason
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I own a V6 Mercruiser 4.3 mpi thats in a 2003 185 Sea Ray
I own a V6 Mercruiser 4.3 mpi that's in a 2003 185 Sea Ray Bow Rider. It has 125 hrs on it and I've been meticulous about maintaining it spring and fall. When I put it in the water this year the engin… read more
Tan
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I have a 92 Sea Ray with a Mercruiser 4.3 V6 with Thunderbolt
I have a 92 Sea Ray with a Mercruiser 4.3 V6 with Thunderbolt ignition. The problem that I am having is when I am going across the water sometimes it seems to knock when I go to throttle up. It could … read more
Jeremy R
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I have a 2003 Sea Ray Sundeck with a 4.3 liter Mercruiser.
I have a 2003 Sea Ray Sundeck with a 4.3 liter Mercruiser. I have a leak. I am seeing oil behind the boat (in the water) and in the bilge area. The only fluid that seems to be going down is the gear f… read more
Tan
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Hi i have a Bayliner 185 capri with the 4.3 mercruiser inboard.2003 They
Hi i have a Bayliner 185 capri with the 4.3 mercruiser inboard.2003 They never gave me a manual when I purchased the boat. I want to top up oil and lubes ,coolants etc but dont know what i need ,is th… read more
Jeff G.
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Vocational, Technical or Trade Scho
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I have a 1990 Mercruiser 4.3 Alpha One. The fuel seems to
I have a 1990 Mercruiser 4.3 Alpha One. The fuel seems to keep dumping in the throttle body after the engine is brought down to an idle or even with the power off. Why?… read more
Master Tech
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4.3 Mercruiser ThunderBolt Ignition Slave Solenoid clicks
4.3 Mercruiser: ThunderBolt Ignition Slave Solenoid clicks 1 time when trying to start Have 12 volts at SS have 12 volts at Starter good battery connections Can start by jumping across terminals on st… read more
Mike of Pompano Beach
Mike of Pompano Beach
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What should labor hours be on R & R of 4.3 v6 inboard that
What should labor hours be on R & R of 4.3 v6 inboard that need new coupler, also labor hours on replacing both bellows, gimbal bearing and shift cable?… read more
ROCKET
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I have a 2003 4.3 mercruiser, I seem to be experiencing a rather
I have a 2003 4.3 mercruiser, I seem to be experiencing a rather frustrating priblem. Two weeks a go while cruising about 30 mile an hour my engine suddenly had a significant power loss and began to b… read more
Captain Dave
Captain Dave
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Master's Degree
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I have a 1993 Lund with a 4.3 Mercruiser engine. It is hard ...
I have a 1993 Lund with a 4.3 Mercruiser engine. It is hard starting. I have to run the starter for 30 seconds or more to get it started, even after it has been run within the last hour. It is hard to… read more
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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