Injector Cleaning (do I Or Don't I)

[ms700]

your cars o2 sensor will most likley be the reason its getting poor economy, they need replacing around the 100k mark.

←

Which hopefully it isn't - as there's none in Aust. and no ETA apparently

←

You need one Tabby?

[tab]

your cars o2 sensor will most likley be the reason its getting poor economy, they need replacing around the 100k mark.

←

Which hopefully it isn't - as there's none in Aust. and no ETA apparently

←

You need one Tabby?

←

Yep - well that's the excuse for the pretty little orange light being on anyway

[Doguepound]

Sorry for the late reply Doguepound, this problem with the O2 sensor was decussed not long ago on FF, here is the link to answer your questions.

Link

←

This is gold!! Cheers falconutebeast. Just what I wanted to read. Might save the $250 on the injector clean and throw it at the o2 sensor instead to see if that helps.

Cheers!

[kawerx]

O2 sensor will effect fuel economy.And do require periodic changing.Bosch automotive have a wall chart with the specs on this.From memory the ba is 80,000km.

I am a mechanic and just changed my fathers o2 sensor in his vs 5.0 stateman.It only has 90.000km on it and instantly economy improved about 15%.

They seem to gradually deteriate.And the recomended service intervalls vary from car to car.Some as low as 40.000km others 150,000km.

Also guys,don't forget to clean your throttle boddies.This can improve idle quality,reduce stalling and improve economy as well.

Use a product like nulon Carb and throttle body cleaner.Available at repco and bursons.

On car injector cleaning is just an upsell.forget it.Just buy a bottle of injector cleaner from repco or bursons again.Nulon again is good.The only way to do it properly is off the car.

[FLASHXR]

During my last service, the mechanic reccomended that I get the injectors cleaned. He commented that they were pretty dirty and then proceeded to ask for an extra $160 (on top of the cost of the service) to do it then and there. I declined, as I figured I'd get it done by a specialist injector cleaning mob but I want to know if anyone else had has this done? If so would you reccomend it?

the car is a BA MKI XR6 with 95,000km on the clock. Fuel economy is a lttle worse than I expect (I drive like a gradma and still only get 14.5-15.5L per 100km out of a tank) so I'm wondering if cleaning the injectors will improve things?

The only way to properly check to see if the injectors are in fact causing your poor fuel economy is to have them flow tested and the spray pattern examined. As previously stated, this has to be done whilst out of the car. If your gonna go to that trouble, I'd be getting them cleaned anyway seeing that they are already out. My personal recommendation for my customers was to have this done around 100,00km reagardless, seeing that its a more major type of service and most times including a timing belt etc... Generally the feedback was an immediate power increase and fuel economy improvements. In saying that, it only takes a small amount of debris to pass through the fuel filter and it will clog an injector and that can happen at any time.

Cheers Flashxr

[Doguepound]

Replacing to O2 sensor has definately helped. I watch my trip computer like a hawk and reset the thing after every time I fill the tank.

Before replacing the sensor I would only see less than 14 L/100km per tank if I took a trip up the coast (ie a whole lotta freeway driving). Using a tank around the city would easily see 16-17L/100km. After changing the O2 sensor the worst has been 14ish, with a typical tank returning 12-13L/100km. A trip to Tamworth saw over 600km between fills and the tank still wasn't empty

Also switched to 95RON and as suggested have thrown a bottle of Nulon injector cleaner into the tank on a couple of occasions.

Now to start driving it 'properly' without fear of going broke...