[OMC-Boats] 1969 buick v6 omc coil

From: wheresjerry@...
Date: Sun, 14 Jun 2009 13:25:33 -0400

Ok, to be more specific, I have been having an issue of when my boat is wide
open, it starts to sputter and seems to be gas starved. What I have done so
far is:

1-Replace gas line.
2-Install fuel separating filter.
3-Install new fuel pump.
4-Install new gas line from pump to carb.**
    Mechanic put a small, but noticeable kink in metal fuel line. It
appears that it could be restricting.
5-Changed plugs and wires.
6-Cleaned carb.

All of this was done in order to stop fuel starvation issue, but to no
avail. :(

This is the 2nd season out on the water, and I need to get to the bottom of
this before I spend more money on my mechanic.

I'd like to change out the kinked fuel line to a flexible line to avoid
kinking, where can I find one? Also, could my coil be shitting out at high
rpm, causing rpm loss, which would cause the mechanical pump to fluctuate
starving motor for fuel?

I have posted questions in the past about this, but figured that a list as
to what has been done might help solving this issue. My mechanic also
suggested it could be from a check valve in the gas tank?

Any help would be grateful in solving this issue!

karl/wheresjerry banach
105 browns pasture rd
strafford, nh 03884

--------------------------------------------------
From: <omc-boats-request@...>
Sent: Sunday, June 14, 2009 12:00 PM
To: <omc-boats@...>
Subject: OMC-Boats Digest, Vol 26, Issue 30

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> 1. Re: 1969 buick v6 omc coil ? (Lee Shuster)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Sun, 14 Jun 2009 09:05:25 -0600
> From: Lee Shuster <lee.k.shuster@...>
> Subject: Re: [OMC-Boats] 1969 buick v6 omc coil ?
> To: "Evinrude & Johnson Boats of the 1960's and 70's"
> <omc-boats@...>
> Message-ID:
> <A862F82A5046A24EAAB14F5651B69AE344AA0874E0@...>
> Content-Type: text/plain; charset="us-ascii"
>
> Karl,
>
> How have you tested the coil or determined that you need a new one? They
> rarely fail, so I'm curious as to why you think you need a replacement?
> What resistance have you measured on the Primary side? What voltage are
> you seeing on the Secondary side? Have you checked the ballast resistor
> and it's connections? This might help :
> http://autorepair.about.com/od/troubleshooting/ss/coiltest-manual.htm
>
> Your 155 OMC Buick-Jeep 3.7L V6 Ignition Coil is a "universal" style
> canister-style, that uses an external ballast resistor. In other words it
> is not unique to the Buick V6 and it is not an electrical part that is
> "marine" rated for instrinsically safe operation. While it is called-out
> as a 12-Volt coil in application, the ballast resistor only allows 12V to
> flow during start-up cranking. Once the engine is running the ballast
> resistor reduces the voltage to the coil by approximately half. So in
> actual running operation the coil does it's job on only 6 to 8 volts,
> adding further confusion. Some 12-volt coils are sold with their own
> internal ballast resistor, so unless you want to bypass your existing
> EXTERNAL ballast resistor, don't get one of those. Keywords for your
> search: 12-volt, external ballast resistor, oil-filled, canister-style
> automotive ignition coil.
>
> If you want a "drop-in" stock replacement, just get a generic 12-Volt
> (using external ballast resistor) cannister style coil, with a similar
> diameter to the one you have. It the new one is slightly smaller diameter
> you can shim it to the clamping bracket holds it securely. Sometimes
> replacement coils might be a little taller, so make sure you measure the
> existing space for height and diameter. You can find these coils just
> about anywhere, ranging from $20.00 to $50.00 dollars depending on whose
> name is on them , how they are externally dressed, and who's marketing
> them up. You can pay a little more if you want a higher ourput spark
> voltage, but I wouldn't go there unless you are considering replacement of
> the stock points with an electronic ignition system. In other words, you
> are only complicating your search by barking up the Buick or Jeep 225 V6
> (3.7L) tree.
>
> While you're at it, don't forget that the best coil in the world won't be
> worth much unless you replace the the HT (High Tension) secondary wires
> running to the distributor and from the distributor to the spark plugs,
> including the distributor cap. You can get the wire in bulk and cut to fit
> or buy a V6 or V8 set and route the wires as neatly as you can. The Buick
> distributor is in a rather odd place compare d to most GM V engines, so
> the distances the HT wires have to travel are a little different. The
> DISTRIBUTOR cap is something that is unique to the 225 Buick V6 (3.7L) and
> that should be available at your local NAPA store. In other words. do NOT
> substitute any other GM V6 distributor or cap for the 150-155 hp OMC -
> Buick- Jeep 1964 - 1972 225 (3.7L) odd-fire V6.
>
> You can read more than you ever wanted to know about the world's first
> mass-produced V6 at:
> http://hhscott.com/evinrude/buick_v6.htm
>
> Lee Shuster
> Utah
>
>
>
>
> ________________________________________
> From: omc-boats-bounces@...
> [omc-boats-bounces@...] On Behalf Of wheresjerry@...
> [wheresjerry@...]
> Sent: Sunday, June 14, 2009 5:38 AM
> To: omc-boats@...
> Subject: [OMC-Boats] 1969 buick v6 omc coil ?
>
> Any one assist me in locating a ignition coil for my OMC Buick v-6 155 hp
> sterndrive....I have been searching all the usual places NAPA, Advanced
> Auto, etc....it seems all pages do not carry a Buick v6 engine, and I do
> not want to purchase a wrong coil....most are listed as v-8's and inline
> 6's...no v6.
> thanks!!!
>
>
> karl/wheresjerry banach
> 105 browns pasture rd
> strafford, nh 03884
>
>
> is on them
>
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> End of OMC-Boats Digest, Vol 26, Issue 30
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Received on Sunday, 14 June 2009

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