Fuel cleaning system and o2 sensor

[captaincorolla]

http://www.amazon.com/dp/B003YJ47JO

http://www.amazon.com/dp/B003YJ47JO

So I was looking at getting this kit and doing this at home, as the process is pretty simple and significantly cheaper than doing it at a shop.

First question, is this worth a penny? The shop charges $100 to do it, which is highway robbery in my book. But I think the $35 on Amazon, is well worth it.

Second, I've had this done at the shop twice before, both times, within days I got a check engine light that checked out to be damaged/dirty o2 sensor. Now that I understand a little bit more about what this kit does, it makes sense. Basically, using this kit will probably soil the o2 sensor, pretty bad.

Is there a safe way to use this kit, to avoid destroying my o2 sensor(s)? How hard is it to remove and replace the o2 sensor(s)? I don't have any way of putting my car up on lifts or anything. The shops charge an arm and a leg to replace the o2 sensors. If I had a lift, my understanding is that it is pretty simple, if you can get access to them.

[fishexpo101]

IMO, not worth $35. Basically a three piece fuel system "cleaner" that most cars should not need, as long as you stay on top of the maintenance. Only nice thing I see if something that can snake down the intake manifold to spray down the intake port. Problem there, if you go too far = bent valve, debris in engine.

You could replicate this with a bottle of good fuel injector cleaner, can of Seafoam, and some throttlebody cleaner. Probably about $20 tops, worth of chemicals.

Shops that charge you over $100 to do this usually hook up directly to the fuel rail, having pressurized solvent pushed through the fuel rail, injectors, induction system, etc. as the engine is running. That will tend to loosen up lots of "gunk" that is normally present in the intakes and combustion chamber, and blow it past the O2 sensors. Eventually, the car will "cook" that stuff off, but depending on what was loosened, may permanently foul the O2 sensor(s).

Easiest way to prevent issues is to disconnect the front pipe, have it run directly to a test pipe. That way, that gunk is not forced past the O2 sensors or through the catalytic converter.

[Woodyg]

Originally Posted by captaincorolla

http://www.amazon.com/dp/B003YJ47JO

So I was looking at getting this kit and doing this at home, as the process is pretty simple and significantly cheaper than doing it at a shop.

First question, is this worth a penny? The shop charges $100 to do it, which is highway robbery in my book. But I think the $35 on Amazon, is well worth it.

Second, I've had this done at the shop twice before, both times, within days I got a check engine light that checked out to be damaged/dirty o2 sensor. Now that I understand a little bit more about what this kit does, it makes sense. Basically, using this kit will probably soil the o2 sensor, pretty bad.

Is there a safe way to use this kit, to avoid destroying my o2 sensor(s)? How hard is it to remove and replace the o2 sensor(s)? I don't have any way of putting my car up on lifts or anything. The shops charge an arm and a leg to replace the o2 sensors. If I had a lift, my understanding is that it is pretty simple, if you can get access to them.

run a bottle of Techron in your tank every 5k......that is all youneed