Dear Mark,
Is that the GM 4.3 V6 engine in marine mode?
I have an '03 GMC Savana cargo van with the 4.3L V6, and I think it is the
best truck engine ever. It develops 260 ft/lbs of torque at 2,800 RPM and
gets 20+ MPG on the highway. It is a torquey stump puller that sips gas. It
just about the best engine I have owned.
It probably is one of GM's oldest engines, too, as it is a 90-degree V-6
developed in the mid-1980s by removing two cylinders from GM 's small block
V-8. A counter-rotating balance shaft was employed to balance primary crank
vibration. They have made millions of them and have it worked out all the
small stuff over the last 20+ years. It feels like a V8 off the line and
drinks gas like a V6 at speed.
best,
doug
----- Original Message -----
From: "Mark" <mark@nashvilletn.org>
To: <shop-talk@autox.team.net>; "Spridgets" <spridgets@autox.team.net>
Sent: Saturday, September 06, 2008 2:52 PM
Subject: Re: [Shop-talk] Mercruiser 4.3
> Thanks for all of the tips, we got the engine running like a champ and the
> vacation was saved. It turned out to be a corroded plug on the ignition
> amplifier board that mounts on the side of the distributor. Sometimes it
> would work and other times not. We cleaned the "green" out and it fired
> right up. We filled it with silicone grease so hopefully it won't do it
> again. I won't be complaining about expensive parts again for a while,
> the
> plug with 5 feet of wire is $70 and the ignition module is about $300.
> Glad
> we didn't need either.
>
> Mark
>
>
> ----- Original Message -----
> From: "Mark" <mark@nashvilletn.org>
> To: <shop-talk@autox.team.net>; "Spridgets" <spridgets@autox.team.net>
> Sent: Wednesday, September 03, 2008 8:02 PM
> Subject: [Spridgets] Mercruiser 4.3
>
>
>
> My next-door neighbor just bought a 93 Sea Ray with a Mercruiser 4.3 V6
> engine. He has had a heck of a time starting it but once he does get it
> running it runs good. He called me tonight thinking that I might help
> with
> the problem. We centered on the electric choke and I think the problem is
> in the driver seat. He doesn't have a manual so we don't know what the
> procedure should be. It looks like the throttle should be disengaged from
> the shit mechanism with the unlock button below the engine control. At
> the
> first detent the choke seems to be free to move mechanically and if cold
> the
> electric choke servo should move the choke butterfly. Can anyone confirm
> what the starting sequence should be, are we getting warm? It is a Alpha
> One Chevy based V6, 2 barrel carb with a Thunderbolt ignition. I can't
> seem
> to find anything on line about operating the engine.
>
> Help, he is taking his family to the lake tomorrow evening for a long
> weekend.
>
> Mark
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