Pickup Loss

[R2D2]

But amines are the cat's behind when it comes to keeping your valves clean and Shell regular contains twice the minimum required by law (it's a top tier gasoline). I've talked to some industry insiders and use Shell if at all possible-my Yaris has had nothing but Shell since the dealer tank.

R2

[RedRide]

Are you absolutly shure that Shell contains twice the legal minimum?
Since all gas additives are added to gas a the distrubution point , what and how much is added is open to variation. We all know how oil companys pretty much do what they want.

As far as the legal minimum, it's a joke to begin with anyway and twice that might still not be enough.

[R2D2]

I agree with the twice not necessarily being enough and I run fuel additive in all my gasoline right down to my lawnmower and snowblower. The additive also helps with phase seperation issues associated with ethanol fuels.

However I do not think a steady diet of the cheapest gas out there without some sort of chemical intervention is the best deal long term-eventually the deposits will start to cost more than is saved.

As I stated above I have reason to believe the Shell is as good as it gets. Everyone I have recommended it to has reported good results with consistent use-unscientific for sure but interesting none the less.

In summary I guess I'm of the opinion that even consistent Top Tier use may not be enough by itself but is a good start at least. Also in my area the Shell does not appear to be any more expensive.
R2

[Yaris Hilton]

It's true, all the bad stuff I've seen about Seafoam is from folks who haven't used it and wouldn't, imagining all kinds of terrible things that they think COULD happen.

There are fuel system cleaning additives meant for regular use as you fill up, and some that are used for periodic maintenance. Some claim to clean injectors only, some claim to clean intake ports and valves as well, and some claim to also remove carbon in the combustion chambers. Those are the "Complete Fuel System Cleaners."

[1stToyota]

Originally Posted by talnlnky

a dirty Mass Airflow Sensor.

That'd be my 1st guess.

[sambo42xa]

Where is this Mass Air Flow Sensor; and, is it something I can change out myself (yes, I am mechanically inclined and do my own work)??
This way I can at least check it out.
Thnx.

[Yaris Hilton]

It's not something to change, just to clean. There have been a good many notes online about that problem, especially when aftermarket air cleaners that use an oiled filter element are installed. Search the archives for MAF.

[supmet]

Originally Posted by RedRide

"A little knowledge is a dangerous thing"

All the so-called "horror stories" aboput Seafoam soley concern putting Seafoam in the oil, sucking it up thorough vacumn lines etc, by people who really do not know what they are doing.

There are absoluly no problems connected to Seafoam when putinng it into the gas tank, only benefits.
It's simple, just pour it into the gas tank. It's fool proof.

Keeping injectors clean should be a part of routine maintenance and whether you use Seafoam or some other sort of qualty injector/ fuels sys cleaner, just do it and stay clear of all the mis information.
The cleaners in gas are totally inadiquate for the long haul and some suplimental cleaner must be added on ocasions.

http://www.greatlakes4x4.com/showthread.php?t=59631

you gotta be careful with those products. my buddy used engine flush one time and all the shit in his engine plugged his oil screen and blew his motor.

http://www.jeepforum.com/forum/f197/...ont-do-836782/

Turns out the seafoam broke all the slidge loose in the tank and cloged the pickup screen on the pump so bad it could not suck any fuel through it.

http://www.benzworld.org/forums/w202...-additive.html

With that in mind I decided to added the SeaFoam to the gas tank rather than directly to combustion chamber via the brake booster vacuum tube.

After adding the product the I drove the C280 about 30 miles. The car ran really well and had rock solid idling.The following day my wife was driving the C280 and after a short trip to the store,she parked the car. Upon returning to the C280 and starting it, she noticed immediately that the car was idling very roughly and the CEL light came on. Driving home on the highway at highway revs , the car had smooth acceleration and drove as it normally does. Only at idle was it rough. Tried to drain fuel from Benz but needed a longer tube to siphon the gas. Decided to just use up the fuel ( full tank ) and see if it will "correct" itself as was the case with the 99 'Explorer


I drove the car this morning, and expected a rough idle at startup. Surprisingly, the car idle like a watch , this AM and during my initial 47 mile commute to work performed as it always does ( plenty of power and smooth running ). Once again ,upon leaving the highway and entering the city and having to stop I noticed that the rough idle has returned. CEL light is still on

I'm thinking fouled plugs or a fouled O2 sensor due to the carbon or guck in the combustion chamber being removed. It's strange that this morining at start up ( and for a while afterwards ) it idled beautifully. Only after the commute and entering the city , where I'd have to stop for stoplights did it idle roughly . Weird.

gas tank fool proof what???

I don't really have anything against seafoam, just 3 people recommending it without knowing ANY symptoms besides loss of power, and NO attempt to diagnose or check anything else.




"A little knowledge is a dangerous thing"

kind of like having extremely limited knowledge about dude's car and recommending seafoam - right?

[1stToyota]

Originally Posted by sambo42xa

Where is this Mass Air Flow Sensor; and, is it something I can change out myself (yes, I am mechanically inclined and do my own work)??
This way I can at least check it out.
Thnx.

That's it, upside down. 1 connector, 2 screws. You saw it when you changed your air filter. Wire-blobby thang on right in photo is for air temp, MAF heated wires are visible down in the sensor. CRC MAF cleaner works great.