volvo penta 4.3 vortec water in oil
10-13-2017 | 10:00 AM
#12
Banned
Joined: Jul 2011
Posts: 9,594
Likes: 46
From: Ft. Worth TX
Located in the very front but off center a hair more starboard position. Its actually the exact same as a drain plug you put in the transom. Some are silver and some are brass but of course painted from the OEM - Volvo was dark grey and Merc of course Phantom Black.
You have to lower the nose of the boat to get it to drain completely. They hold water.
In late mid half 1996 we got one of the first Newer V 6 models - 190 hp - the one piece curved down exhaust manifolds ( no exhaust risers ) - with a 2 bbl carb - vortec and that drain plug in the intake manifold. Mercruiser. So looking over this engine in detail - seen a hull drain plug in the intake manifold. -
Marine service shops prob about 70 % in 1996 and about 50 % in 1997 ended up with cracked intakes basically because not to many knew about this especially the Volvo dealers. Volvo has less service training classes than Mercruiser and less training locations as well back then.
I will admit I / my shops got lucky finding this in Sept 1996. Cause if I did not we would have been in the same boat as the 70 % whom did not know about the V6 intake drain plug. .
You have to lower the nose of the boat to get it to drain completely. They hold water.
In late mid half 1996 we got one of the first Newer V 6 models - 190 hp - the one piece curved down exhaust manifolds ( no exhaust risers ) - with a 2 bbl carb - vortec and that drain plug in the intake manifold. Mercruiser. So looking over this engine in detail - seen a hull drain plug in the intake manifold. -
Marine service shops prob about 70 % in 1996 and about 50 % in 1997 ended up with cracked intakes basically because not to many knew about this especially the Volvo dealers. Volvo has less service training classes than Mercruiser and less training locations as well back then.
I will admit I / my shops got lucky finding this in Sept 1996. Cause if I did not we would have been in the same boat as the 70 % whom did not know about the V6 intake drain plug. .
Last edited by BUP; 10-13-2017 at 10:04 AM.
10-13-2017 | 10:18 AM
#13
Banned
Joined: Jul 2011
Posts: 9,594
Likes: 46
From: Ft. Worth TX
OEM stock Volvo exhaust manifolds - more times when deep freeze break -- crack external - a huge chunk will crack. The thinnest casting section in those manifolds are the external side wall of the manifold one of the reasons they crack externally from froze broke. I am not saying they will never leak internally from what ever reasons but passing along the info. .
06-23-2021 | 02:56 PM
#14
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Joined: Jun 2021
Posts: 1
Likes: 0
We had same problem ... Just found out the intake was bad
Hello . did you figure out the problem? . my pops did lots of work to it then reuseed the manifold and i guess it had a crak in it that. He never seen soo he put it on ...we had tge same issue . come to find out a big chunk of the manifold fell off in the top side of the engine. . .. just found that yestyrday...... Did you figure out your problem with it? Thank pete
QUOTE=tommy8103;4587314]Will check the manifold (Have to pull it).only thing that makes sense.same issue caused my first engine to blow.and the only thing I reused was the manifold.may have it magnifluxed. only ran it aprox an hour.then got the milkshake..so it happened fast.thanks for the tip.[/QUOTE]
QUOTE=tommy8103;4587314]Will check the manifold (Have to pull it).only thing that makes sense.same issue caused my first engine to blow.and the only thing I reused was the manifold.may have it magnifluxed. only ran it aprox an hour.then got the milkshake..so it happened fast.thanks for the tip.[/QUOTE]
