On my 1998 Honda Accord 4-Cyl, my engine starts to shake/stutter when I'm
in 4th gear (automatic) usually between 1600-1900 RPM's. If I force the engine
to downshift, it goes away. I also started to smell a little gas vapor coming
from my vent right around the same time this started happening. It's faint
and I can only smell it when the car is not moving. I don't smell it with
the A/C on.

So far, I've replaced the spark plugs and wires and distributor cap and rotor.
I've also gotten the timing belt package replaced. Again, this started before
I did any of this stuff. I looked into replacing the fuel filter but the
1998 Accord has it built into the fuel pump so I don't think that's it.

Other than this annoying things, the car runs smooth. I have no idea what's
wrong. Can anyone suggest something? Thanks!

Erick

 

I can't explain the gas smell but I can suggest that you check the vacuum
advance. This is an "Old Tech" problem but that is what I found wrong with
my carborated '85 CRX CVCC. ]

Just to look and all those hundreds of vacuum hoses and different components
is intimidating, however, from years of old, low tech, cars I started with
the obvious and after finding one broken vacuum hose and then both diaphrams
in the vacuum advance leaking, the engine hesitation went away.


--
My experience and opinion, FWIW
--
Steve


"Erick Larin" <thelarin@hotmail.com> wrote in message
news:532a7232342f8c789b009887567@news.east.cox.net ...
>
> On my 1998 Honda Accord 4-Cyl, my engine starts to shake/stutter when I'm
> in 4th gear (automatic) usually between 1600-1900 RPM's. If I force the
> engine to downshift, it goes away. I also started to smell a little gas
> vapor coming from my vent right around the same time this started
> happening. It's faint and I can only smell it when the car is not moving.
> I don't smell it with the A/C on.
>
> So far, I've replaced the spark plugs and wires and distributor cap and
> rotor. I've also gotten the timing belt package replaced. Again, this
> started before I did any of this stuff. I looked into replacing the fuel
> filter but the 1998 Accord has it built into the fuel pump so I don't
> think that's it.
>
> Other than this annoying things, the car runs smooth. I have no idea
> what's wrong. Can anyone suggest something? Thanks!
>
> Erick
>
>

 

Hi Erick

I have to agree with Steve, 99% of the times if the engine
"shake/stutter", it is cause by a leaking vacum hose. Many times you
hear people saying that they changed a gas regulator or changed the gas
pump, etc.. However, while they change these parts, many mechanics
will also change the hoses and 99% of the time it was the hose that was
at fault.

Unfortuantely, it's easy and quick fix, the problem is finding the
leaking hose.
:-(

Good luck.
Frank

 

I have no idea where the vacuum advance is in the engine. Where is it usually
located?

> I can't explain the gas smell but I can suggest that you check the
> vacuum advance. This is an "Old Tech" problem but that is what I found
> wrong with my carborated '85 CRX CVCC. ]
>
> Just to look and all those hundreds of vacuum hoses and different
> components is intimidating, however, from years of old, low tech, cars
> I started with the obvious and after finding one broken vacuum hose
> and then both diaphrams in the vacuum advance leaking, the engine
> hesitation went away.
>
> "Erick Larin" <thelarin@hotmail.com> wrote in message
> news:532a7232342f8c789b009887567@news.east.cox.net ...
>
>> On my 1998 Honda Accord 4-Cyl, my engine starts to shake/stutter when
>> I'm in 4th gear (automatic) usually between 1600-1900 RPM's. If I
>> force the engine to downshift, it goes away. I also started to smell
>> a little gas vapor coming from my vent right around the same time
>> this started happening. It's faint and I can only smell it when the
>> car is not moving. I don't smell it with the A/C on.
>>
>> So far, I've replaced the spark plugs and wires and distributor cap
>> and rotor. I've also gotten the timing belt package replaced. Again,
>> this started before I did any of this stuff. I looked into replacing
>> the fuel filter but the 1998 Accord has it built into the fuel pump
>> so I don't think that's it.
>>
>> Other than this annoying things, the car runs smooth. I have no idea
>> what's wrong. Can anyone suggest something? Thanks!
>>
>> Erick
>>

 

Motor mounts or transmission problem. If it only does it in 4th it
can't be an engine problem.

And you have a gas leak from the fuel supply or evap recovery system.

 

Possibly a CV Axel joint sticking as well. I had a vibration at certain speeds that troubled me for a long time. Turned out to be a bad cv outer joint on the passenger side.

 

It is on the Distributor (where all the spark plug wires go). It is attached
to the side and is usually a round can shape with one or two vacuum hoses
going to it.

Steve

"Erick Larin" <thelarin@hotmail.com> wrote in message
news:da6aafe005738c78b4151042b9b@news.east.cox.net ...
>I have no idea where the vacuum advance is in the engine. Where is it
>usually located?
>
>> I can't explain the gas smell but I can suggest that you check the
>> vacuum advance. This is an "Old Tech" problem but that is what I found
>> wrong with my carborated '85 CRX CVCC. ]
>>
>> Just to look and all those hundreds of vacuum hoses and different
>> components is intimidating, however, from years of old, low tech, cars
>> I started with the obvious and after finding one broken vacuum hose
>> and then both diaphrams in the vacuum advance leaking, the engine
>> hesitation went away.
>>
>> "Erick Larin" <thelarin@hotmail.com> wrote in message
>> news:532a7232342f8c789b009887567@news.east.cox.net ...
>>
>>> On my 1998 Honda Accord 4-Cyl, my engine starts to shake/stutter when
>>> I'm in 4th gear (automatic) usually between 1600-1900 RPM's. If I
>>> force the engine to downshift, it goes away. I also started to smell
>>> a little gas vapor coming from my vent right around the same time
>>> this started happening. It's faint and I can only smell it when the
>>> car is not moving. I don't smell it with the A/C on.
>>>
>>> So far, I've replaced the spark plugs and wires and distributor cap
>>> and rotor. I've also gotten the timing belt package replaced. Again,
>>> this started before I did any of this stuff. I looked into replacing
>>> the fuel filter but the 1998 Accord has it built into the fuel pump
>>> so I don't think that's it.
>>>
>>> Other than this annoying things, the car runs smooth. I have no idea
>>> what's wrong. Can anyone suggest something? Thanks!
>>>
>>> Erick
>>>
>
>

 

I jumped the service connector today and am getting the following error codes:

71
73
74

What does this mean?

> On my 1998 Honda Accord 4-Cyl, my engine starts to shake/stutter when
> I'm in 4th gear (automatic) usually between 1600-1900 RPM's. If I
> force the engine to downshift, it goes away. I also started to smell a
> little gas vapor coming from my vent right around the same time this
> started happening. It's faint and I can only smell it when the car is
> not moving. I don't smell it with the A/C on.
>
> So far, I've replaced the spark plugs and wires and distributor cap
> and rotor. I've also gotten the timing belt package replaced. Again,
> this started before I did any of this stuff. I looked into replacing
> the fuel filter but the 1998 Accord has it built into the fuel pump so
> I don't think that's it.
>
> Other than this annoying things, the car runs smooth. I have no idea
> what's wrong. Can anyone suggest something? Thanks!
>
> Erick
>