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Just replaced cylinder heads on 5.7 mercruiser (chev 350)
Just replaced cylinder heads on 5.7 mercruiser (chev 350) … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,804 satisfied customers
I own a 2001 Chaparral Sunesta powered by a Mercruiser
I own a 2001 Chaparral Sunesta powered by a Mercruiser 5.0 EFI engine. The manual isn't really helpful in identifying exactly what drains I should expect to find on my boat. Here's what it says: "Remo… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I hooked up a manual oil pressure gauge, 40+ psi at idle. I
Jason,, I hooked up a manual oil pressure gauge, 40+ psi at idle. I pulled the plugs to do a compression test as I had planned. The port side all 4 cylinders are 185 - 190. Th starboard side, cyl 1 is… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,804 satisfied customers
Maybe you can, I hope. I have twin 350 Magnum Mercrusier engines
Maybe you can, I hope. I have twin 350 Magnum Mercrusier engines on my 2002 Rinker 342 and have water intrusion into my Starboard engine cylinders on the port side. Never overheated but hydrolocked la… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
i have twin Mercruiser 305 ci (MIE228) in a 1978 Bertram 28
i have twin Mercruiser 305 ci (MIE228) in a 1978 Bertram 28 the port engine has been overheating with the temp gauge showing rapid increase at higher rpm, then dropping when rpms are reduced and engin… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
Hi,We have a 2005 Rinker 360 with 496 mercs and have had water
Hi,We have a 2005 Rinker 360 with 496 mercs and have had water in the cylinders in both port and starboard sides, what's the best fix? Thanks Andrew… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I have a 1992 Bayliner Classic 2252 with a Mercruiser 4.3L
I have a 1992 Bayliner Classic 2252 with a Mercruiser 4.3L V6 I/O. I removed the front two bolts on the left exhaust elbow to install a remote oil filter. I did not drain the elbow first. I found wate… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I replaced my raw water pump impeller and now i have water
I replaced my raw water pump impeller and now i have water leaking from the plugs in both the exhaust mainfold just before the riser. More water is coming out of the starboard side then the port side … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,804 satisfied customers
2006 Sea Ray 280 Sundancer Mercury 5.0 the motor dies after
2006 Sea Ray 280 Sundancer Mercury 5.0 the motor dies after a few minutes. Initial problem was fixed: Had water in one cylinder. Changed risers/manifold. Then ran engine, now it dies after a few minut… read more
briggs archer
briggs archer
master marine mechanic
Associate Degree
403 satisfied customers
I have a 2004 crownline with a merc 5.7 The port side of the
I have a 2004 crownline with a merc 5.7 The port side of the engine is hydrolocked. The boat doesnt overheat, there isnt water in the oil. It seems that its getting in when the engine is shut off. I p… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
Good Day, I have a 2000 Searay 340 with twin Mercruiser
Good Day, I have a 2000 Searay 340 with twin Mercruiser 7.4. I had to have the heads changed on the starboard engine in which they had to pull the engine out in order to do the work, long story. But s… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I have a 1996 5.7 volvo penta ran great onshore got wet on
I have a 1996 5.7 volvo penta ran great onshore got wet on monday ran for 30 mins than quit at dock discovered it had hydrolocked . What would be the main cause for this ? already removed the water an… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
5.7L raw water cooled. Starboard side riser running too hot
5.7L raw water cooled. Starboard side riser running too hot to touch. Changed the riser with a new one, no difference. Still running hot on the one side.… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have a 2006 Meridian 368 with twin mercruiser 8.1L, 420 HP
I have a 2006 Meridian 368 with twin mercruiser 8.1L, 420 HP engines. They have approximately 100 hours on them, and have been maintained according to specs. on the port engine the compression in the … read more
Greg Robinson
Greg Robinson
Senior service manager
Vocational, Technical or Trade Scho
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I have a Sea Ray Sundancer 270 with twin 5.7 mercruiser. The
I have a Sea Ray Sundancer 270 with twin 5.7 mercruiser. The starboard engine has water in all 8 cylinders. Any ideas where this would come from. If a head or gasket issue, I'd expect maybe 2 cylinder… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a 2005 - 3.0 Mercruiser with water in the oil (250 hrs).
I have a 2005 - 3.0 Mercruiser with water in the oil (250 hrs). I change the oil and it comes back, no overheating - oil pressure is good as long as I change the oil before the next trip. Local techni… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
16 year old 5.0 litre mercruiser engine wont start. Sounds
16 year old 5.0 litre mercruiser engine won't start. Sounds liek it want to but won't Fuel appears good! Spark Good! Did not check compression. Removed spark plugs and noticed moisture and rust. Clean… read more
briggs archer
briggs archer
master marine mechanic
Associate Degree
403 satisfied customers
1984 235 HP 5.0 over heats, stbd side flows better than port,
1984 235 HP 5.0 over heats, stbd side flows better than port, risers and manifold are clear what gives?… read more
briggs archer
briggs archer
master marine mechanic
Associate Degree
403 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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