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We just purchased a 1983 evinrude 9.9 outboard with was
We just purchased a 1983 evinrude 9.9 outboard with was extremely low hours. Upon running the motor, we noticed a slight misfire.There was slight white oil in the inside of the sparkplugs, but not on … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
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My flapper in the exhaust is not preventing water from
My flapper in the exhaust is not preventing water from coming up into the engine. … read more
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Jason
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I just purchased a 1999 Sea Ray 340 Sundancer with T - 7.4
I just purchased a 1999 Sea Ray 340 Sundancer with T - 7.4 Ltr Horizon 380HP engines with V-Drives. I've been reading about water ingestion on these motors on this boat. The exhaust has never been upd… read more
Jason
Jason
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Both heads filled with water gaskets look good 't see
both heads filled with water gaskets look good don't see any cracks in heads or intake manifold. Motor didn't over heat.… read more
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where can i find a "standard labour time" for servicing an
where can i find a "standard labour time" for servicing an OMC cobra 5.8 1989 ? eg : how long does it take to exchange the engine oil , spark plugs, oil on gearcase, impeller including housing ? (for … read more
Tan
Tan
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1996 4.3LX/V6 has hydrolocked. no water in oil. only in cylinders.
1996 4.3LX/V6 has hydrolocked. no water in oil. only in cylinders. No oil in bilge. was running fine at normal temp and press until it started running rough w/load-fine at idle. slowly accelerated tri… read more
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Im working on a 1996 4.3 sg volvo penta engine the right hand
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Scott Martin
Scott Martin
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I have a 1994 Sea Ray 180 Bowrider with a 4.3L Mercruiser V6-190HP.
I have a 1994 Sea Ray 180 Bowrider with a 4.3L Mercruiser V6-190HP. I recently had a engine compression test done and my results came back as this: #1 150 #2 110 #3 135 #4 145 #5 150 #6 145 A cylinder… read more
Jeff G.
Jeff G.
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I have a mercrusier 3.7 170. It started to over heat on the
I have a mercrusier 3.7 170. It started to over heat on the lake yesterday. Not very familiar with boat cooling systems. Someone told us to put water in a little cooling tank on top of motor, we did a… read more
James
James
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1991 MALIBU WITH A MAGNUM 350. TURNED ENGINE OFF FOR 5 MINUTES
1991 MALIBU WITH A MAGNUM 350. TURNED ENGINE OFF FOR 5 MINUTES & ENGINE WAS HYDRO LOCKED WHEN TRIED TO RESTART. WATER IN CYLINDERS ON BOTH SIDES. WATER IN OIL.… read more
James
James
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Vocational, Technical or Trade Scho
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2006 Honda 225 HP -450 hours TT--- water in all six cylinders
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Jeff G.
Jeff G.
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Vocational, Technical or Trade Scho
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I have a 1998 5.7 mercrusier with Bravo 2 outdrive, ran boat
I have a 1998 5.7 mercrusier with Bravo 2 outdrive, ran boat for past 3 days without problem. When returnurning home slowed down to enter channel and engine ran rough yhen died, yrt to re-start and en… read more
Jeremy R.
Jeremy R.
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I have a 2000 mercruiser 5.0 EFI stern drive. Have a problem
I have a 2000 mercruiser 5.0 EFI stern drive. Have a problem with water getting in to the engine. Pulled all of the spark plugs and turned it over. I saw water pump out form port side cylinders (I bel… read more
Michael
Michael
master marine technician/charter captain
Vocational, Technical or Trade Scho
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1995 crownline w/454 impeller seemed to explode, (it was brand
1995 crownline w/454 impeller seemed to explode, (it was brand new) did not run boat for more than a minute, it locked up, would not turn over, came home and pulled plugs, had water in cylinders on bo… read more
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James
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Vocational, Technical or Trade Scho
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Hi - I have a 96 Searay w/7.4LX Merc sterndrive. Yesterday
Hi - I have a 96 Searay w/7.4LX Merc sterndrive. Yesterday it overheated while at idle in the marina (seawater impeller shot) and pegged the temp gauge. After I shut it down and let it cool a little, … read more
mercmastertech
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without a gasket being blown out or the cause, how else could
without a gasket being blown out or the cause, how else could seawater get into a cylinder? Someone told me that it might be because the engine when shut off, it ran backwards, sound right?… read more
mercmastertech
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I have 1993 mercrusier gm 305 inboard engine and water getting
I have 1993 mercrusier gm 305 inboard engine and water getting in on all 4 cylinders on one side, recently replaced exhaust water flappers , replaced exhaust manifold, checked riser and exhaust manifo… read more
Dr Hamman
Dr Hamman
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I have a yanmar 3gm 30f w/ approx 250 hrs on it. My boat yard
I have a yanmar 3gm 30f w/ approx 250 hrs on it. My boat yard informed me the engine was hydro locked when they winterized it. What are the possible causes of hydro lock (aside from trying to start fo… read more
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Ted G.

Ted G.

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40 years boating, Safe boating instruct., Offshore Race promoter, Failure Analysis, Expert Witness

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Dominick

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John White

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Jason

Jason

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Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

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Jeff G.

Jeff G.

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Noel Schembri

Noel Schembri

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