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06 DF-140 I have water in the oil milky. Has not over
06 DF-140 I have water in the oil milky. Has not over heated. has away's ran great. … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a 1976 Olympic with a 3.0L 181 C.U. 140 hp. Motor.
Hi- I have a 1976 Olympic with a 3.0L 181 C.U. 140 hp. Motor. Motor has less than a hundred hours on it. I started it and ran it yesterday after having been winterized and sitting for about a year. Th… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
Mercruiser 4.3 tks - looses power when throttling up - idles
mercruiser 4.3 tks - looses power when throttling up - idles fine. ran fine all summer - new plugs, wires, cap rotor in spring - replaced fuel filters, coil, distributor ignition sensor - fuel pump so… read more
Joe
Joe
Owner Kingsland Auto & Marine Services
Vocational, Technical or Trade Scho
1,396 satisfied customers
Just changed the oil (only) on our mercruiser 4.3 L engine. The
Just changed the oil (only) on our mercruiser 4.3 L engine. The oil level (out of the water and in the water) is between the low and high indicators on the dip stick. When I start the engine the oil p… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have owned a Sunseeker for 17 years, with 700 hours
I have owned a Sunseeker for 17 years, with 700 hours, no trouble at all. Two 1996 5.7 GSI engines. Professionally maintained by the supplying agent from new and trouble-free. Winterised and kept in t… read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
I have twin 1986 mercruiser 350 cu in 260HP with 1100 hrs
I have twin 1986 mercruiser 350 cu in 260HP with 1100 hrs running time.In the left engine over the past 2 years have noticed more moisture in the rocker box lines that go up to the flame arrestor and … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
Boat starting problem I have a 1999 Bayliner Trophy with
Boat starting problem I have a 1999 Bayliner Trophy with a 4.3 mercruiser engine serial # XXXXX It has a 2 bll carb and a Thunderbolt ignition. I bought it last fall and I was told it had been in stor… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
Sea ray Seville: I have a 1988 4.3l mercruiser with a 4 barrel
I have a 1988 4.3l mercruiser with a 4 barrel Rochester qudrajet carb. Here is my problem. At 3000 Rpms not on plane. It backfires. And when I got to get up on plane and give it a fistful of throttle.… read more
Scott Martin
Scott Martin
Service manager
Vocational, Technical or Trade Scho
167 satisfied customers
I have a 1993 4.3 liter mercruiser and it backfires under a
I have a 1993 4.3 liter mercruiser and it backfires under a heavy load but runs fine when planed out. I rebuilt the carb and changed plugs and wires. besides timing, is there any thing else I should c… read more
MRYZ450F
MRYZ450F
74 satisfied customers
have a 4.3 1998 v6 carb mercruiser engine changed oil this
have a 4.3 1998 v6 carb mercruiser engine changed oil this fall with boat tilted to rear to suck oil out of dip stick tube only got two and a half to two and three quarters quarts of oil out of it yet… read more
KKassel
KKassel
OWNER
High School or GED
381 satisfied customers
I have a 2004 Mercruiser 5.0. It has been started. Its sitting
I have a 2004 Mercruiser 5.0. It has been started. It's sitting on the trailer. The oil dip stick indicates it is over full of oil by probably a quart. Is this normail or does the boat have to much oi… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a Mercruiser 4.3 L V6 Engine 1996. Melting many of
I have a Mercruiser 4.3 L V6 Engine 1996. Melting many of the Spark plugs. The first time it melted 1 and 3 the head and valves had to be replace. The next time it melted 1, 3 and 6. But had it checke… read more
Master Tech
Master Tech
Service Manager/Technician
Vocational, Technical or Trade Scho
1,167 satisfied customers
I have a 2000 model Mercruiser 4.3 v6 engine in my boat. When
I have a 2000 model Mercruiser 4.3 v6 engine in my boat. When I checked oil after winter storage, found oil milky. Changed oil, all was milky and oil fliter milky oil also. Have not ran just turned ov… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
i have a 88 carver santego with twin 98 4.3 ltr mercruisers.
i have a 88 carver santego with twin 98' 4.3 ltr mercruisers. the port motor starts up fine and idles up to wot (wide open throttle) fine at the dock when not in gear. but when underway with drive eng… read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
I have a 1978 Johnson 70hp that has a what seems to be a misfire
I have a 1978 Johnson 70hp that has a what seems to be a misfire under load and will not rev over 2500-2600 rpms. It runs fine on the muffs but not during water test. The carbs were rebuilt, the compr… read more
Dr. Joe
Dr. Joe
Bachelor's Degree
198 satisfied customers
okay here it goes. last years winterization didnt go as planned
okay here it goes. last years winterization didn't go as planned and the boat motor froze and pushed out the frost plug,it is a mercruiser 4.3 2 barrel carb,2001. well I hoped for the best that the fr… read more
ROCKET
ROCKET
MASTER CERTIFIED TECH
Vocational, Technical or Trade Scho
426 satisfied customers
New boat owner (last summer). Just recharged batt, started
New boat owner (last summer). Just recharged batt, started motor--audible warning chirp, and motor ran for just 10-15 secs, sounded "dry," so I shut it off. Ran fine last year when I bedded it for win… read more
Greg Robinson
Greg Robinson
Senior service manager
Vocational, Technical or Trade Scho
199 satisfied customers
I have a 1977 165hp mercruiser inline 6cly engine.It is running
I have a 1977 165hp mercruiser inline 6cly engine.It is running rich. plugs are black not burning clean. The boat starts easy and seems to run great at low rpms, but when it is put under a load and co… read more
Larry B.
Larry B.
Marine Service Tech
High School or GED
574 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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