Fuel System Cleaner that works?

Reply
 
LinkBack Thread Tools Display Modes
Old 17 Apr 2012, 01:18 pm   #1 (permalink)
Michael Dobony
Guest
  • Posts: n/a
  • User Status:


Default Fuel System Cleaner that works?

Toyota dealer suggested a $20 fuel system cleaner, but I already put some
Techron in at the suggestion of a friend. It cleaned up his O2 sensor and
eliminated the error code. The engine is running a bit smoother, but not
right yet after 100 miles. I've had Sea Foam suggested by a mechanic, but
haven't seen great results. Any other suggestions on something that will
work? Engine is running a bit rough and no, I can't change the fuel filter.
It's in the fuel tank
  Reply With Quote
Old 17 Apr 2012, 03:01 pm   #2 (permalink)
C. E. White
Guest
  • Posts: n/a
  • User Status:


Default Re: Fuel System Cleaner that works?


"Michael Dobony" <survey@stopassaultnow.net> wrote in message
news:jtnic1lkcp8p.1qtvjuscaqldg$.dlg@40tude.net...
> Toyota dealer suggested a $20 fuel system cleaner, but I already put some
> Techron in at the suggestion of a friend. It cleaned up his O2 sensor and
> eliminated the error code. The engine is running a bit smoother, but not
> right yet after 100 miles. I've had Sea Foam suggested by a mechanic, but
> haven't seen great results. Any other suggestions on something that will
> work? Engine is running a bit rough and no, I can't change the fuel
> filter.
> It's in the fuel tank


What makes you think a fuel system cleaner will fix the problem? Any symptom
other than running a bit rough? Did the error code go away automatically, or
did you reset it? What else have you done to address the concern? How many
miiles on the engine?

Excessive use of fuel system cleaners is noto a good thing. Of the ones
avaialble I like the Techron clean-up product the best, but it can't fix
basic mechanical or electrical problems. If the rough running is at idle, it
is unlikely the problem is related to the fuel filter. If it is really
somesort of problem with the injectors, then you may need to have a real
mechanic look at it.

Ed


  Reply With Quote
Old 17 Apr 2012, 03:24 pm   #3 (permalink)
NotMe
Guest
  • Posts: n/a
  • User Status:


Default Re: Fuel System Cleaner that works?

"Michael Dobony" <survey@stopassaultnow.net> wrote in message
news:jtnic1lkcp8p.1qtvjuscaqldg$.dlg@40tude.net...
> Toyota dealer suggested a $20 fuel system cleaner, but I already put some
> Techron in at the suggestion of a friend. It cleaned up his O2 sensor and
> eliminated the error code. The engine is running a bit smoother, but not
> right yet after 100 miles. I've had Sea Foam suggested by a mechanic, but
> haven't seen great results. Any other suggestions on something that will
> work? Engine is running a bit rough and no, I can't change the fuel
> filter.
> It's in the fuel tank



I had a similar experience with a Dodge Van. Turned out to be a bad O2
sensor. YMMV


  Reply With Quote
Old 17 Apr 2012, 08:21 pm   #4 (permalink)
Elmo P. Shagnasty
Guest
  • Posts: n/a
  • User Status:


Default Re: Fuel System Cleaner that works?

In article <jtnic1lkcp8p.1qtvjuscaqldg$.dlg@40tude.net>,
Michael Dobony <survey@stopassaultnow.net> wrote:

> Toyota dealer suggested a $20 fuel system cleaner, but I already put some
> Techron in at the suggestion of a friend. It cleaned up his O2 sensor and
> eliminated the error code. The engine is running a bit smoother, but not
> right yet after 100 miles. I've had Sea Foam suggested by a mechanic, but
> haven't seen great results. Any other suggestions on something that will
> work? Engine is running a bit rough and no, I can't change the fuel filter.
> It's in the fuel tank


Techron a couple of times. Techron is good.

I had a 125K Lexus ES that responded *very* well to a dozen or so tanks
of Shell 93, then maintained well with Shell 87. Fuel mileage went
noticeably up.
  Reply With Quote
Old 17 Apr 2012, 10:10 pm   #5 (permalink)
NM5K
Guest
  • Posts: n/a
  • User Status:


Default Re: Fuel System Cleaner that works?

On 4/17/2012 1:18 PM, Michael Dobony wrote:
> Toyota dealer suggested a $20 fuel system cleaner, but I already put some
> Techron in at the suggestion of a friend. It cleaned up his O2 sensor and
> eliminated the error code. The engine is running a bit smoother, but not
> right yet after 100 miles. I've had Sea Foam suggested by a mechanic, but
> haven't seen great results. Any other suggestions on something that will
> work? Engine is running a bit rough and no, I can't change the fuel filter.
> It's in the fuel tank



100 miles is not enough. Normally it would take a tank or
two of gas with techron in it to clean out a crudded up
engine. I don't know what kind of mpg he is getting, but
with mine, 100 miles would be lucky to burn more than a
1/4 a tank of gas.
Techron is as good as anything else you will find out there.
I'd stick with it. But give it at least two tank fulls to do
it's thing. That would probably be two of the smaller bottles..
They have two sizes I think.. I always get the smaller of the two,
being as my tank is only 13 gallons.
When using Techron to clean an engine, it's not when the
engine is running where the real cleaning comes in.
It's after you cut off the hot engine and let it heat soak
for a while, that it starts to cut the cheese.
Particularly with heavy carbon in combustion chambers,
behind valves, injectors, etc..
After it sits for a while, crank it up again to blow out
the crud a bit, let it get hot, and then turn it off to
start the cycle over again.
So the more run cycles you do per tank of gas, the better it
will work. If one were to add a bottle, get on the highway
and burn the gas up in one shot, it does much less cleaning.
Using normal "gas tank strength" Techron is going to take a
while to do it's thing.
And it's possible that you have a problem that chemicals
won't fix.


  Reply With Quote
Old 19 Apr 2012, 01:18 pm   #6 (permalink)
Michael Dobony
Guest
  • Posts: n/a
  • User Status:


Default Re: Fuel System Cleaner that works?

On Tue, 17 Apr 2012 16:01:32 -0400, C. E. White wrote:

> "Michael Dobony" <survey@stopassaultnow.net> wrote in message
> news:jtnic1lkcp8p.1qtvjuscaqldg$.dlg@40tude.net...
>> Toyota dealer suggested a $20 fuel system cleaner, but I already put some
>> Techron in at the suggestion of a friend. It cleaned up his O2 sensor and
>> eliminated the error code. The engine is running a bit smoother, but not
>> right yet after 100 miles. I've had Sea Foam suggested by a mechanic, but
>> haven't seen great results. Any other suggestions on something that will
>> work? Engine is running a bit rough and no, I can't change the fuel
>> filter.
>> It's in the fuel tank

>
> What makes you think a fuel system cleaner will fix the problem? Any symptom
> other than running a bit rough? Did the error code go away automatically, or
> did you reset it? What else have you done to address the concern? How many
> miiles on the engine?
>
> Excessive use of fuel system cleaners is noto a good thing. Of the ones
> avaialble I like the Techron clean-up product the best, but it can't fix
> basic mechanical or electrical problems. If the rough running is at idle, it
> is unlikely the problem is related to the fuel filter. If it is really
> somesort of problem with the injectors, then you may need to have a real
> mechanic look at it.
>
> Ed


So the Toyota mechanic is not a real mechanic?
  Reply With Quote
Old 19 Apr 2012, 01:19 pm   #7 (permalink)
Michael Dobony
Guest
  • Posts: n/a
  • User Status:


Default Re: Fuel System Cleaner that works?

On Tue, 17 Apr 2012 22:10:29 -0500, NM5K wrote:

> On 4/17/2012 1:18 PM, Michael Dobony wrote:
>> Toyota dealer suggested a $20 fuel system cleaner, but I already put some
>> Techron in at the suggestion of a friend. It cleaned up his O2 sensor and
>> eliminated the error code. The engine is running a bit smoother, but not
>> right yet after 100 miles. I've had Sea Foam suggested by a mechanic, but
>> haven't seen great results. Any other suggestions on something that will
>> work? Engine is running a bit rough and no, I can't change the fuel filter.
>> It's in the fuel tank

>
>
> 100 miles is not enough. Normally it would take a tank or
> two of gas with techron in it to clean out a crudded up
> engine. I don't know what kind of mpg he is getting, but
> with mine, 100 miles would be lucky to burn more than a
> 1/4 a tank of gas.
> Techron is as good as anything else you will find out there.
> I'd stick with it. But give it at least two tank fulls to do
> it's thing. That would probably be two of the smaller bottles..
> They have two sizes I think.. I always get the smaller of the two,
> being as my tank is only 13 gallons.
> When using Techron to clean an engine, it's not when the
> engine is running where the real cleaning comes in.
> It's after you cut off the hot engine and let it heat soak
> for a while, that it starts to cut the cheese.
> Particularly with heavy carbon in combustion chambers,
> behind valves, injectors, etc..
> After it sits for a while, crank it up again to blow out
> the crud a bit, let it get hot, and then turn it off to
> start the cycle over again.
> So the more run cycles you do per tank of gas, the better it
> will work. If one were to add a bottle, get on the highway
> and burn the gas up in one shot, it does much less cleaning.
> Using normal "gas tank strength" Techron is going to take a
> while to do it's thing.
> And it's possible that you have a problem that chemicals
> won't fix.


The Toyota mechanic found nothing wrong other than suggesting a fuel
treatment, which I already did.
  Reply With Quote
Old 19 Apr 2012, 02:38 pm   #8 (permalink)
NM5K
Guest
  • Posts: n/a
  • User Status:


Default Re: Fuel System Cleaner that works?

On 4/19/2012 1:19 PM, Michael Dobony wrote:

>
> The Toyota mechanic found nothing wrong other than suggesting a fuel
> treatment, which I already did.


Not if you've burned less than a 1/2 tank so far. 100 miles
is not long enough. The techron is highly diluted when mixed
with gas in the normal amounts.
Many cars with severe crud actually need full strength flushes
to clean them out. I had a Camry I had to flush very severe carbon
from the engine, and even with using techron in the gas, and also
feeding it full strength directly into the input using vacuum ports,
it took nearly a week to get it all out. In that case, it had
severe "snow coning" behind the intake valves.
To do that job quickly, I would have had to use a closed system
flush, motorvac, etc to get it out fast.
If you are only adding it to the gas tank, the cleaning is going to
take a while. And like I say, if there are few run cycles where the
engine gets to sit and heat soak, it going to take even longer
per the amount of techron you use.
It sounds like you probably have some injector clogging..
Varnish clogs injectors, the snow coning behind intake valves expand
when hot and keep the valves from properly closing, which no
compression, no run, on that cyl.
Carbon in the combustion chambers causes a lean run condition as
the carbon soaks fuel vapors, and it causes the compression ratio
to increase, which leads to more pinging, etc.. It can also clog
the EGR ports, which raises combustion temps, more pinging, and
usually a high NOX score if you took an emission test.
Carbon and varnish can be a real pain. That's one reason why
I use only top tier gasolines, which always have some type of
cleaner.. IE: Chevron and Texico both add techron to their gas.
The others use different proprietary cleaners..
Only my old Ford trucks with carbs will I use gas from almost
anywhere. It's not much of an issue on those old engines.
I just run some ATF down the carb every oil change.
But my EFI Toyota only gets the good stuff, as it's much more
critical on those engines.







  Reply With Quote
Old 20 Apr 2012, 02:30 pm   #9 (permalink)
SMS
Guest
  • Posts: n/a
  • User Status:


Default Re: Fuel System Cleaner that works?

On 4/17/2012 11:18 AM, Michael Dobony wrote:
> Toyota dealer suggested a $20 fuel system cleaner, but I already put some
> Techron in at the suggestion of a friend. It cleaned up his O2 sensor and
> eliminated the error code. The engine is running a bit smoother, but not
> right yet after 100 miles. I've had Sea Foam suggested by a mechanic, but
> haven't seen great results. Any other suggestions on something that will
> work? Engine is running a bit rough and no, I can't change the fuel filter.
> It's in the fuel tank


What state are you in?

Some states, like California, have very high standards for gasoline,
which includes the requirement to have detergent additives in the
gasoline. There's no advantage to filling up with one brand over another
here, and in fact refineries and pipelines from the refineries are
shared between different brands of fuel.

It seems that every service department recommends cleaning the fuel
system with every service, even though of course they have no way of
knowing whether or not it is necessary. At least they did not recommend
what Click and Clack call the "Bilstein Wallet Flush."

In any case, it's highly unlikely that the rough running engine is
caused by anything that a bottle of anything will fix.
  Reply With Quote
Old 23 Apr 2012, 08:49 am   #10 (permalink)
C. E. White
Guest
  • Posts: n/a
  • User Status:


Default Re: Fuel System Cleaner that works?


"Michael Dobony" <survey@stopassaultnow.net> wrote in message
news:i8iotkejsr8v$.1eedrjbzpdssf$.dlg@40tude.net.. .
> On Tue, 17 Apr 2012 16:01:32 -0400, C. E. White wrote:
>
>> "Michael Dobony" <survey@stopassaultnow.net> wrote in message
>> news:jtnic1lkcp8p.1qtvjuscaqldg$.dlg@40tude.net...
>>> Toyota dealer suggested a $20 fuel system cleaner, but I already put
>>> some
>>> Techron in at the suggestion of a friend. It cleaned up his O2 sensor
>>> and
>>> eliminated the error code. The engine is running a bit smoother, but not
>>> right yet after 100 miles. I've had Sea Foam suggested by a mechanic,
>>> but
>>> haven't seen great results. Any other suggestions on something that will
>>> work? Engine is running a bit rough and no, I can't change the fuel
>>> filter.
>>> It's in the fuel tank

>>
>> What makes you think a fuel system cleaner will fix the problem? Any
>> symptom
>> other than running a bit rough? Did the error code go away automatically,
>> or
>> did you reset it? What else have you done to address the concern? How
>> many
>> miiles on the engine?
>>
>> Excessive use of fuel system cleaners is noto a good thing. Of the ones
>> avaialble I like the Techron clean-up product the best, but it can't fix
>> basic mechanical or electrical problems. If the rough running is at idle,
>> it
>> is unlikely the problem is related to the fuel filter. If it is really
>> somesort of problem with the injectors, then you may need to have a real
>> mechanic look at it.
>>
>> Ed

>
> So the Toyota mechanic is not a real mechanic?


Suggesting adding more Seafoam or any fuel system cleaner as a cure after
you already tried Techron is suspect. A real Toyota mechanic will have the
tools to determine the cause of the rough running.

Ed


  Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 04:43 pm.

Attribution:
Autoblog
Powered by Yahoo Answers



ToyotaLexusForum.com is an unofficial community for car enthusiasts. ToyotaLexusForum.com is not affiliated with Toyota Motor Corporation in any way.
Toyota Motor Corporation does not sponsor, support, or endorse ToyotaLexusForum.com in any way.
Copyright/trademark/sales mark infringements are not intended or implied.