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Robert M. Gary May 19th 08 08:39 PM

Starting technique 190hp Merc (carb'd)
 
When I first bought my Bayliner I ran out to the water and started
using it before opening up the engine area. At that time it didn't
occur to me that it was carb'd. My starting technique at the time was
to just hit the starter. About 9 of 10 times it started right up. Then
I realized it was carb'd and I should probably give it some gas.
However, since doing that my starting percentage had dropped. What I'm
doing now is to move the throttle full forward (in idle), then back
full back, and then leave it back enough that it will start around
2000 RPM. Then I hit the starter. However, my "start on first attempt"
is less than when I did nothing.
Just curious how much priming people generally do.

Also, I've noticed that when I'm pulling someone; when I shutdown to
let them in the boat the boat tends to diesel for a bit. This doesn't
happen when I'm not pulling someone in the water. Can someone
recommend a good stopping technique? Should I let it idle for a bit or
should I run it at high RPM (in idle) before shutting down?

BTW: Where I am outside temps are between 90F-110F so I"m not sure if
"cold start" is the right term.

-Robert

John H.[_4_] May 19th 08 09:29 PM

Starting technique 190hp Merc (carb'd)
 
On Mon, 19 May 2008 12:39:15 -0700 (PDT), "Robert M. Gary"
wrote:

When I first bought my Bayliner I ran out to the water and started
using it before opening up the engine area. At that time it didn't
occur to me that it was carb'd. My starting technique at the time was
to just hit the starter. About 9 of 10 times it started right up. Then
I realized it was carb'd and I should probably give it some gas.
However, since doing that my starting percentage had dropped. What I'm
doing now is to move the throttle full forward (in idle), then back
full back, and then leave it back enough that it will start around
2000 RPM. Then I hit the starter. However, my "start on first attempt"
is less than when I did nothing.
Just curious how much priming people generally do.

Also, I've noticed that when I'm pulling someone; when I shutdown to
let them in the boat the boat tends to diesel for a bit. This doesn't
happen when I'm not pulling someone in the water. Can someone
recommend a good stopping technique? Should I let it idle for a bit or
should I run it at high RPM (in idle) before shutting down?

BTW: Where I am outside temps are between 90F-110F so I"m not sure if
"cold start" is the right term.

-Robert


I had a 5.7L I/O, and I always had to 'pump' the throttle two or three
times when starting it cold. I also had to start it with the throttle open
somewhat, 2000 rpm sounds about right. But as soon as it started I'd
throttle down to idle.

I bought the boat when it was two years old, and I sold it when it was
about ten years old, just to give you a frame of reference.

I would let the boat idle for a few seconds before shutting it down.
--
John *H*

Wayne.B May 20th 08 04:36 AM

Starting technique 190hp Merc (carb'd)
 
On Mon, 19 May 2008 16:29:32 -0400, John H.
wrote:

I had a 5.7L I/O, and I always had to 'pump' the throttle two or three
times when starting it cold. I also had to start it with the throttle open
somewhat, 2000 rpm sounds about right. But as soon as it started I'd
throttle down to idle.


Sounds about like my old 5.7L. Fuel injection has cured all that,
well worth the cost.


John H.[_4_] May 20th 08 11:37 AM

Starting technique 190hp Merc (carb'd)
 
On Mon, 19 May 2008 23:36:07 -0400, Wayne.B
wrote:

On Mon, 19 May 2008 16:29:32 -0400, John H.
wrote:

I had a 5.7L I/O, and I always had to 'pump' the throttle two or three
times when starting it cold. I also had to start it with the throttle open
somewhat, 2000 rpm sounds about right. But as soon as it started I'd
throttle down to idle.


Sounds about like my old 5.7L. Fuel injection has cured all that,
well worth the cost.


Mine was a '97. They probably went to fuel injection a couple months after
mine was made!

BTW, did you see my message 'over there' about Eleuthera?
--
John *H*

jamesgangnc May 20th 08 02:10 PM

Starting technique 190hp Merc (carb'd)
 
"Robert M. Gary" wrote in message
...
When I first bought my Bayliner I ran out to the water and started
using it before opening up the engine area. At that time it didn't
occur to me that it was carb'd. My starting technique at the time was
to just hit the starter. About 9 of 10 times it started right up. Then
I realized it was carb'd and I should probably give it some gas.
However, since doing that my starting percentage had dropped. What I'm
doing now is to move the throttle full forward (in idle), then back
full back, and then leave it back enough that it will start around
2000 RPM. Then I hit the starter. However, my "start on first attempt"
is less than when I did nothing.
Just curious how much priming people generally do.

Also, I've noticed that when I'm pulling someone; when I shutdown to
let them in the boat the boat tends to diesel for a bit. This doesn't
happen when I'm not pulling someone in the water. Can someone
recommend a good stopping technique? Should I let it idle for a bit or
should I run it at high RPM (in idle) before shutting down?

BTW: Where I am outside temps are between 90F-110F so I"m not sure if
"cold start" is the right term.

-Robert


Do what works best.

I would be a little concerned about the run on. Idling for a while will
make it shut down more positively when you turn it off. But the run on also
indicates that you may have detonation. That is the gas being prematurely
ignited because of heat in the cylinder. That is bad for the engine. Make
sure your cooling system is performing properly. When was the last time you
replaced the impeller? If you are using regular gas I suggest you try a
couple tanks of premium and see if that reduces it. Detonation or
pre-ignition can result in melted pistons/damaged cylinders so it's not
something you want to completely ignore.



Wayne.B May 20th 08 03:36 PM

Starting technique 190hp Merc (carb'd)
 
On Tue, 20 May 2008 06:37:34 -0400, John H.
wrote:

BTW, did you see my message 'over there' about Eleuthera?


Yes.


John H.[_4_] May 20th 08 09:47 PM

Starting technique 190hp Merc (carb'd)
 
On Tue, 20 May 2008 10:36:20 -0400, Wayne.B
wrote:

On Tue, 20 May 2008 06:37:34 -0400, John H.
wrote:

BTW, did you see my message 'over there' about Eleuthera?


Yes.


Good.
--
John *H*

Calif Bill May 21st 08 12:48 AM

Starting technique 190hp Merc (carb'd)
 

"John H." wrote in message
...
On Tue, 20 May 2008 10:36:20 -0400, Wayne.B
wrote:

On Tue, 20 May 2008 06:37:34 -0400, John H.
wrote:

BTW, did you see my message 'over there' about Eleuthera?



I thought of doing a Flats trip to Eleuthera. Ever used a place like the
Rainbow Inn for a week of fishing and beachcombing?



John H.[_4_] May 21st 08 01:42 AM

Starting technique 190hp Merc (carb'd)
 
On Tue, 20 May 2008 16:48:40 -0700, "Calif Bill"
wrote:


"John H." wrote in message
.. .
On Tue, 20 May 2008 10:36:20 -0400, Wayne.B
wrote:

On Tue, 20 May 2008 06:37:34 -0400, John H.
wrote:

BTW, did you see my message 'over there' about Eleuthera?



I thought of doing a Flats trip to Eleuthera. Ever used a place like the
Rainbow Inn for a week of fishing and beachcombing?


When I was there I was working. Didn't have time for any fishing as we
worked 7 days a week. Usually we were camped on some island with a survey
tower to man.

But, I did see the scenery driving back and forth to work. It's a beautiful
island!
--
John *H*


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