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I have a boat with a mercruiser 4.3 thunderbolt. It will not
I have a boat with a mercruiser 4.3 thunderbolt. It will not fire. I have checked spark plugs and they are fine. replaced distributor cap, rotor and coil.… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,303 satisfied customers
I HAVE A 1998 SEA RAY 215 EXPRESS CRUISER. LESS THAN 200
GOOD NIGHT. I HAVE A 1998 SEA RAY 215 EXPRESS CRUISER. LESS THAN 200 HOURS ON THE ENGINE. AFTER THE BOAT HAD BEEN RUNNING FOR ONE AND HALF HOUR (AVERAGE THREE TIMES) THE ENGINE SHUTS OFF. GAS SMELL. W… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,303 satisfied customers
Coming back to the power leak, I've made a probe like You
Hi Jason, Coming back to the power leak, I've made a probe like You suggested. Attached is a video of me cranking the engine and putting my probe from minus on the battery to the engine, and as you ca… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,303 satisfied customers
We talked yesterday about leaking power, probably from the
Hello jason, We talked yesterday about leaking power , probably from the distributor. Today I disassembled the distributor and found two holes in the buttom of it, and I'm pretty sure that they could … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,303 satisfied customers
Flemming from DK here. So now I'm almost done with the
Hi Jason, Flemming from DK here. So now I'm almost done with the wiring on the engine, that you very succesfully helped me with. I'm looking at the switchboard and ignition key now. Quick question, is… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,303 satisfied customers
Flemming here again, from Denmark. You helped me the other
Hi Jason, Flemming here again, from Denmark. You helped me the other day with what pins to jump for my engine to get the ignition and all. Perfect, now I have a question because when I am jumping pin … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,303 satisfied customers
I'm working on a Mercruiser 4.3 V6 year 1988, and I'm fixing
Hi, I'm working on a Mercruiser 4.3 V6 year 1988, and I'm fixing to fire it up on a build up outside the boat. On the multi plug I can't figure out which to wires to connect for ignition. I'm using th… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,303 satisfied customers
Flemming here again. It worked like a charm with the jumping
Hi again jason, Flemming here again. It worked like a charm with the jumping of the pins. Another issue I'm having. It's an old boat I bought that I'm putting in a remodelled engine. From the Shift Cu… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,303 satisfied customers
I have a 1988 weekender 300 with twin Mercruiser 5.7l that I
Hello ! I have a 1988 weekender 300 with twin Mercruiser 5.7l that I did a tune up on and she won't start up on the port side engine. I replaced the port side distributor cap and rotor. She turns over… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,303 satisfied customers
Chevrolet: John, i have a V6 gm engine in my boat the plugs
hi John, i have a V6 gm engine in my boat the plugs i have are ac deco 41-101 12568387 do you know what gap i should have as 1 bank off 3 fire and the second bank does not all leads are ok spark at th… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,303 satisfied customers
Mercruiser thunderbolt v ignition module part # ***** 1251-1......
Mercruiser thunderbolt v ignition module part # ***** 1251-1...... Where do I buy a new one of these, how do I test the existing one, should I replace coil too. Basically after engine is warm, rpm's d… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,399 satisfied customers
2003 carburated 4.3 liter mercruiser, starts fine, runs great
2003 carburated 4.3 liter mercruiser, starts fine, runs great from idle all the way to full speed. When I shut the key off, instead of the motor shutting off like it did the last 7 years, it now motor… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,303 satisfied customers
Hi. I have a 1981 120HP Mercruiser that I am trying to wake
Hi. I have a 1981 120HP Mercruiser that I am trying to wake up after 9 years of storage. The engine turns over but will not fire. I checked for spark on the distributor coil wire against ground and go… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,399 satisfied customers
Problem: After 30-45 minutes or so of running my 4.3 mercruiser
Problem: After 30-45 minutes or so of running my 4.3 mercruiser I/O it slightly back fires and stalls. I can restart but only run it at very low speeds. When I try to accelerate it stalls again. After… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
this is kind of a 2 part question. so i may not want to pay
this is kind of a 2 part question. so i may not want to pay what it costs to get the answers. i have a 4.3 mpi v6 mercruiser. it should be a 2001 or 2002 it backfired and died going down the lake. and… read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
1,803 satisfied customers
I have a 4.3 v6 mercruiser. It will turn over and start for
I have a 4.3 v6 mercruiser. It will turn over and start for just an instant, but won't run. I tested the ignition and I have spark until the engine starts, then it shuts off. (no spark) Please help.… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
i have a 5.7 liter mercruiser in a 94 marada, and I have lost
i have a 5.7 liter mercruiser in a 94 marada, and I have lost spark. Local mechanics gave me sonme suggestions so, i changed the ignition switch, ignition module, and the coil with no success. any oth… read more
Joe
Joe
Owner Kingsland Auto & Marine Services
Vocational, Technical or Trade Scho
1,392 satisfied customers
I HAVE A 4.3L 2004 MERCRUISER. ENGINE IS OVERHEATING. HOW
I HAVE A 4.3L 2004 MERCRUISER. ENGINE IS OVERHEATING. HOW DOES ONE CHECK THEROMSTAT OR IMPELLER. RUNS GOOD, HAS NOT BEEN RUN MUCH IN LAST YEAR. TOOK OUT FOR SPIN, HEATED UP TO ALARM WHEN GOING FULL SP… read more
Infiniti Nissan Specialist
Infiniti Nissan Specialist
Master Technician
Vocational, Technical or Trade Scho
915 satisfied customers
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