|
Related Topics:
| Saltwater Trouble - It appears saltwater has somehow got into my motor. The boat is a28' twin.Last summer it over heated, we waited till it cooled off,added water and then went back to the finger and tied up.It was used sparingly but without came Juan.I was..
The trouble with OMBO and IBS - The trouble with one man bridge operation (OMB0) on large ships is one man cannot possibly pay enough attention all the time he's on watch. Rather than making safer these bridge systems (IBS) make it more You can have an..
Not lookin fer trouble - I am generally courteous to law people cuz if they want they can always find something to cite you for so you might as well get on their good side. This has worked most of the time for everybody except the local marine patrol officials who..
Most Trouble free refrigeration? - Most Trouble free I am a system and am in what other folks have & have not found Thanks in advance. Doug King
Possible trouble getting rid of encrusted salt. - Howdy, I took an 8 horse engine out for three hours in the salt water. I hooked it up to a drum of fresh water but can't seem to get a steady stream of water to come out of the cooling duct. Instead i get a dribble. Am I doing something wrong on the.
|
|
|
Next: Strange Weather
|
| Author |
Message |
External
Since: Jun 22, 2008
Posts: 7
|
(Msg. 1) Posted: Sun Jun 22, 2008 7:30 pm
Post subject: Engine trouble
Archived from groups: rec>boats (more info?)
|
|
|
Hi, I have a 75HP, 1992, 3 pistons/2 strokes Mariner engine that
started to give me trouble yesterday. While a was pulling a tube, the
engine suddenly lost power and even at WOT, would not go over 2,600
RPM (while pulling the tube).
I tried the boat alone and even at WOT, the RPM would slowly increase
up to 3,200 and then jolted to 4,000 and then I had to pull the
throttle so it wouldn't go over 5,000 RPM (ie, from 4,000 and 5,000,
the engine was behaving normally). Below 3,200 RPM, the engine noise
is 'deep' and rough.
I had my wife driving the boat while I was watching the engine for any
physical anomaly and couldn't see any. There was no sudden linkage
movement between 3,200 and 4,000 RPM. The butterflies were fully
opened with the throttle at WOT.
The only two things I can think of (and that's just guesses) is there
are two sets of injectors and one kicks in at 3,200 or there is a
second sets of butterflies that opens at 3,200 (but I didn't see any).
I had the injectors cleaned last fall and the engine was running
smoothly until this happened.
Anybody knows what could make the engine behave that way? Or if you
know a better newsgroup/forum to post my question, I'm all ear.
Thanks! |
|
| Back to top |
|
 | |
External
Since: Mar 07, 2006
Posts: 292
|
(Msg. 2) Posted: Sun Jun 22, 2008 7:47 pm
Post subject: Re: Engine trouble [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
<gagnon.sylvain RemoveThis @gmail.com> wrote in message
news:75891839-5d1f-46f6-aa2c-df6033521575@x35g2000hsb.googlegroups.com...
> Hi, I have a 75HP, 1992, 3 pistons/2 strokes Mariner engine that
> started to give me trouble yesterday. While a was pulling a tube, the
> engine suddenly lost power and even at WOT, would not go over 2,600
> RPM (while pulling the tube).
>
> I tried the boat alone and even at WOT, the RPM would slowly increase
> up to 3,200 and then jolted to 4,000 and then I had to pull the
> throttle so it wouldn't go over 5,000 RPM (ie, from 4,000 and 5,000,
> the engine was behaving normally). Below 3,200 RPM, the engine noise
> is 'deep' and rough.
>
> I had my wife driving the boat while I was watching the engine for any
> physical anomaly and couldn't see any. There was no sudden linkage
> movement between 3,200 and 4,000 RPM. The butterflies were fully
> opened with the throttle at WOT.
>
> The only two things I can think of (and that's just guesses) is there
> are two sets of injectors and one kicks in at 3,200 or there is a
> second sets of butterflies that opens at 3,200 (but I didn't see any).
>
> I had the injectors cleaned last fall and the engine was running
> smoothly until this happened.
>
> Anybody knows what could make the engine behave that way? Or if you
> know a better newsgroup/forum to post my question, I'm all ear.
>
> Thanks!
Over temp possible. Maybe low oil in the tank. |
|
| Back to top |
|
| |
External
Since: Jun 22, 2008
Posts: 7
|
(Msg. 3) Posted: Sun Jun 22, 2008 8:00 pm
Post subject: Re: Engine trouble [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
On Jun 22, 10:47 pm, "CalifBill" <bmckees... RemoveThis @ix.netcom.com> wrote:
> <gagnon.sylv... RemoveThis @gmail.com> wrote in message
>
> news:75891839-5d1f-46f6-aa2c-df6033521575@x35g2000hsb.googlegroups.com...
>
>
>
> > Hi, I have a 75HP, 1992, 3 pistons/2 strokes Mariner engine that
> > started to give me trouble yesterday. While a was pulling a tube, the
> > engine suddenly lost power and even at WOT, would not go over 2,600
> > RPM (while pulling the tube).
>
> > I tried the boat alone and even at WOT, the RPM would slowly increase
> > up to 3,200 and then jolted to 4,000 and then I had to pull the
> > throttle so it wouldn't go over 5,000 RPM (ie, from 4,000 and 5,000,
> > the engine was behaving normally). Below 3,200 RPM, the engine noise
> > is 'deep' and rough.
>
> > I had my wife driving the boat while I was watching the engine for any
> > physical anomaly and couldn't see any. There was no sudden linkage
> > movement between 3,200 and 4,000 RPM. The butterflies were fully
> > opened with the throttle at WOT.
>
> > The only two things I can think of (and that's just guesses) is there
> > are two sets of injectors and one kicks in at 3,200 or there is a
> > second sets of butterflies that opens at 3,200 (but I didn't see any).
>
> > I had the injectors cleaned last fall and the engine was running
> > smoothly until this happened.
>
> > Anybody knows what could make the engine behave that way? Or if you
> > know a better newsgroup/forum to post my question, I'm all ear.
>
> > Thanks!
>
> Over temp possible. Maybe low oil in the tank.
Thanks for the very quick reply 
However, I tried the engine the next morning while the engine was cool
and it did the same thing. The oil reservoir is about half full. >> Stay informed about: Engine trouble |
|
| Back to top |
|
| |
External
Since: Nov 05, 2005
Posts: 1354
|
(Msg. 4) Posted: Mon Jun 23, 2008 4:23 am
Post subject: Re: Engine trouble [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
gagnon.sylvain.DeleteThis@gmail.com wrote in news:75891839-5d1f-46f6-aa2c-df6033521575
@x35g2000hsb.googlegroups.com:
> I had the injectors cleaned last fall and the engine was running
> smoothly until this happened.
>
A '92 Mariner has injectors, not carbs??
Does it have a PRIMER BULB? >> Stay informed about: Engine trouble |
|
| Back to top |
|
| |
External
Since: Jun 22, 2008
Posts: 7
|
(Msg. 5) Posted: Mon Jun 23, 2008 7:21 am
Post subject: Re: Engine trouble [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
On Jun 23, 12:23 am, Larry <no....DeleteThis@home.com> wrote:
> gagnon.sylv....DeleteThis@gmail.com wrote in news:75891839-5d1f-46f6-aa2c-df6033521575
> @x35g2000hsb.googlegroups.com:
>
> > I had the injectors cleaned last fall and the engine was running
> > smoothly until this happened.
>
> A '92 Mariner has injectors, not carbs??
>
> Does it have a PRIMER BULB?
Primer bulb on the fuel line? Yes I have one. Now that I think about
it, it has oil injector but probably carburetor... >> Stay informed about: Engine trouble |
|
| Back to top |
|
| |
External
Since: Jun 22, 2008
Posts: 7
|
(Msg. 6) Posted: Mon Jun 23, 2008 7:32 am
Post subject: Re: Engine trouble [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
On Jun 23, 6:31 am, Short Wave Sportfishing <em....TakeThisOut@swsportsremove.org>
wrote:
> On Sun, 22 Jun 2008 19:30:16 -0700 (PDT), gagnon.sylv....TakeThisOut@gmail.com
> wrote:
>
> >Anybody knows what could make the engine behave that way?
>
> If the VRO has been acting up, you could have fouled plugs, the carbs
> might need cleaning, could be a soft power pack - there are any number
> of possibilities with that type of RPM range.
>
> I would suspect either plugs or something along the lines of a power
> pack.
I'll check the plugs but at idle, the engine runs fine. I would think
a foul plug would show its color more at low RPM.
The transition is ALWAYS at 3,200 RPM. Once it reaches 3,200 RPM (on
the dot), it gets to 4,000 RPM within a fraction of a second (it feels
like a sport car taken off) as if it got the correct air/gas ratio
suddenly. >> Stay informed about: Engine trouble |
|
| Back to top |
|
| |
External
Since: May 04, 2007
Posts: 3008
|
(Msg. 7) Posted: Mon Jun 23, 2008 10:28 am
Post subject: Re: Engine trouble [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
gagnon.sylvain DeleteThis @gmail.com wrote:
> On Jun 23, 12:23 am, Larry <no... DeleteThis @home.com> wrote:
>> gagnon.sylv... DeleteThis @gmail.com wrote in news:75891839-5d1f-46f6-aa2c-df6033521575
>> @x35g2000hsb.googlegroups.com:
>>
>>> I had the injectors cleaned last fall and the engine was running
>>> smoothly until this happened.
>> A '92 Mariner has injectors, not carbs??
>>
>> Does it have a PRIMER BULB?
>
> Primer bulb on the fuel line? Yes I have one. Now that I think about
> it, it has oil injector but probably carburetor...
Dirty carb or carb needing rebuilding. Dirty plugs. Fouled sensor
somewhere. >> Stay informed about: Engine trouble |
|
| Back to top |
|
| |
External
Since: Mar 09, 2008
Posts: 576
|
(Msg. 8) Posted: Mon Jun 23, 2008 10:31 am
Post subject: Re: Engine trouble [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
On Sun, 22 Jun 2008 19:30:16 -0700 (PDT), gagnon.sylvain.RemoveThis@gmail.com
wrote:
>Anybody knows what could make the engine behave that way?
If the VRO has been acting up, you could have fouled plugs, the carbs
might need cleaning, could be a soft power pack - there are any number
of possibilities with that type of RPM range.
I would suspect either plugs or something along the lines of a power
pack. >> Stay informed about: Engine trouble |
|
| Back to top |
|
| |
External
Since: Jun 22, 2008
Posts: 7
|
(Msg. 9) Posted: Mon Jun 23, 2008 11:23 am
Post subject: Re: Engine trouble [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
On Jun 23, 10:28 am, HK <payer33....DeleteThis@mypacks.net> wrote:
> gagnon.sylv....DeleteThis@gmail.com wrote:
> > On Jun 23, 12:23 am, Larry <no....DeleteThis@home.com> wrote:
> >> gagnon.sylv....DeleteThis@gmail.com wrote in news:75891839-5d1f-46f6-aa2c-df6033521575
> >> @x35g2000hsb.googlegroups.com:
>
> >>> I had the injectors cleaned last fall and the engine was running
> >>> smoothly until this happened.
> >> A '92 Mariner has injectors, not carbs??
>
> >> Does it have a PRIMER BULB?
>
> > Primer bulb on the fuel line? Yes I have one. Now that I think about
> > it, it has oil injector but probably carburetor...
>
> Dirty carb or carb needing rebuilding. Dirty plugs. Fouled sensor
> somewhere.
The carb got cleaned last Fall. Was rough a bit but since it was
cleaned and up until yesterday, it ran smooth. I'll check the plugs
next weekend.
A local shop told me to check if there is water in the gas tank. Since
it's an inboard tank, it's not easy to check so I'll use a external
5gal tank (and clean fuel) and see if it runs fine. >> Stay informed about: Engine trouble |
|
| Back to top |
|
| |
External
Since: May 04, 2007
Posts: 3008
|
(Msg. 10) Posted: Mon Jun 23, 2008 2:32 pm
Post subject: Re: Engine trouble [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
gagnon.sylvain DeleteThis @gmail.com wrote:
> On Jun 23, 10:28 am, HK <payer33... DeleteThis @mypacks.net> wrote:
>> gagnon.sylv... DeleteThis @gmail.com wrote:
>>> On Jun 23, 12:23 am, Larry <no... DeleteThis @home.com> wrote:
>>>> gagnon.sylv... DeleteThis @gmail.com wrote in news:75891839-5d1f-46f6-aa2c-df6033521575
>>>> @x35g2000hsb.googlegroups.com:
>>>>> I had the injectors cleaned last fall and the engine was running
>>>>> smoothly until this happened.
>>>> A '92 Mariner has injectors, not carbs??
>>>> Does it have a PRIMER BULB?
>>> Primer bulb on the fuel line? Yes I have one. Now that I think about
>>> it, it has oil injector but probably carburetor...
>> Dirty carb or carb needing rebuilding. Dirty plugs. Fouled sensor
>> somewhere.
>
> The carb got cleaned last Fall. Was rough a bit but since it was
> cleaned and up until yesterday, it ran smooth. I'll check the plugs
> next weekend.
>
> A local shop told me to check if there is water in the gas tank. Since
> it's an inboard tank, it's not easy to check so I'll use a external
> 5gal tank (and clean fuel) and see if it runs fine.
Stuck reeds? Jumped timing (sheared flywheel key, maybe?) >> Stay informed about: Engine trouble |
|
| Back to top |
|
| |
External
Since: Nov 05, 2005
Posts: 1354
|
(Msg. 11) Posted: Mon Jun 23, 2008 8:13 pm
Post subject: Re: Engine trouble [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
gagnon.sylvain.RemoveThis@gmail.com wrote in news:62714b8c-e3b5-49cc-b991-
34a2207c3dff.RemoveThis@56g2000hsm.googlegroups.com:
> I've printed your message and I'll give a go next weekend. Thanks.
>
>
That little bulb is one of the best outboard motor troubleshooters ever
invented....(c;
I'll be watching for your reply. >> Stay informed about: Engine trouble |
|
| Back to top |
|
| |
External
Since: Mar 09, 2008
Posts: 576
|
(Msg. 12) Posted: Tue Jun 24, 2008 12:51 am
Post subject: Re: Engine trouble [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
On Mon, 23 Jun 2008 14:47:38 +0000, Larry <noone DeleteThis @home.com> wrote:
>The look on a boater's face when I tell him to open the gas cap a crack,
>or the fuel valve he forgot to open, and the engine smooths out in 15
>seconds, having watched his bulb collapse..........PRICELESS!..
One more advantage of direct injection two stroke engines - no primer
bulb.
Primer bulb - pfffhhhtt - ancient tech. >> Stay informed about: Engine trouble |
|
| Back to top |
|
| |
External
Since: May 04, 2007
Posts: 3008
|
(Msg. 13) Posted: Tue Jun 24, 2008 12:51 am
Post subject: Re: Engine trouble [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
Short Wave Sportfishing wrote:
> On Mon, 23 Jun 2008 14:47:38 +0000, Larry <noone.RemoveThis@home.com> wrote:
>
>> The look on a boater's face when I tell him to open the gas cap a crack,
>> or the fuel valve he forgot to open, and the engine smooths out in 15
>> seconds, having watched his bulb collapse..........PRICELESS!..
>
> One more advantage of direct injection two stroke engines - no primer
> bulb.
>
> Primer bulb - pfffhhhtt - ancient tech.
I understand your eTech runs on water vapors and pumps wine out the pee-er.
BTW, in the years I have owned two Yamaha four strokes I never once have
touched the primer bulb. >> Stay informed about: Engine trouble |
|
| Back to top |
|
| |
External
Since: Mar 09, 2008
Posts: 576
|
(Msg. 14) Posted: Tue Jun 24, 2008 2:33 am
Post subject: Re: Engine trouble [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
On Mon, 23 Jun 2008 21:45:22 -0400, HK <payer33859.RemoveThis@mypacks.net> wrote:
>Short Wave Sportfishing wrote:
>> On Mon, 23 Jun 2008 14:47:38 +0000, Larry <noone.RemoveThis@home.com> wrote:
>>
>>> The look on a boater's face when I tell him to open the gas cap a crack,
>>> or the fuel valve he forgot to open, and the engine smooths out in 15
>>> seconds, having watched his bulb collapse..........PRICELESS!..
>>
>> One more advantage of direct injection two stroke engines - no primer
>> bulb.
>>
>> Primer bulb - pfffhhhtt - ancient tech.
>
>I understand your eTech runs on water vapors and pumps wine out the pee-er.
Not wine - bourbon.
>BTW, in the years I have owned two Yamaha four strokes I never once have
>touched the primer bulb.
Of course not. >> Stay informed about: Engine trouble |
|
| Back to top |
|
| |
External
Since: May 04, 2007
Posts: 3008
|
(Msg. 15) Posted: Tue Jun 24, 2008 2:33 am
Post subject: Re: Engine trouble [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
Short Wave Sportfishing wrote:
> On Mon, 23 Jun 2008 21:45:22 -0400, HK <payer33859.DeleteThis@mypacks.net> wrote:
>
>> Short Wave Sportfishing wrote:
>>> On Mon, 23 Jun 2008 14:47:38 +0000, Larry <noone.DeleteThis@home.com> wrote:
>>>
>>>> The look on a boater's face when I tell him to open the gas cap a crack,
>>>> or the fuel valve he forgot to open, and the engine smooths out in 15
>>>> seconds, having watched his bulb collapse..........PRICELESS!..
>>> One more advantage of direct injection two stroke engines - no primer
>>> bulb.
>>>
>>> Primer bulb - pfffhhhtt - ancient tech.
>> I understand your eTech runs on water vapors and pumps wine out the pee-er.
>
> Not wine - bourbon.
>
>> BTW, in the years I have owned two Yamaha four strokes I never once have
>> touched the primer bulb.
>
> Of course not.
I kid you not. Never touched either of them. In fact, I didn't even know
where the current one was until I opened the bilge hatch this past week
to work the valve for the livewell. There it was...untouched. >> Stay informed about: Engine trouble |
|
| Back to top |
|
| |
|
FAQ
Search
Profile
Private Messages
Log in
