Worn Fuel Injectors?? How To Check? - Maintenance & Repairs

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  • Worn fuel injectors?? How to check?
Worn fuel injectors?? How to check? Yongwd

By Yongwd, February 7, 2002 in Maintenance & Repairs

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February 7, 2002

Yo Bradders and experts,

 

How to check worn fuel injectors??

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Neutral Newbie February 7, 2002

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February 7, 2002

Take out and blow see see lor.... [:p]

 

Sorry not sure, but I think have to take them out to pressure test.

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February 7, 2002

Zun bo? not cleaning spark plug leh.

 

 

 

Take out and blow see see lor.... [:p]

 

Sorry not sure, but I think have to take them out to pressure test.

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February 7, 2002

Else jut jut some fuel injector cleaner and see whether your car smoother or not lor. U want? I got plenty to spare.

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February 7, 2002

GEeee!! :) Fuel additive ? [:p]

 

Maybe worth trying, not much expectations anyway.

 

 

 

Else jut jut some fuel injector cleaner and see whether your car smoother or not lor. U want? I got plenty to spare.
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February 7, 2002

Fuel injection cleaner lah, for prevention rather than cure type of additive [;)]

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3rd Gear February 9, 2002

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February 9, 2002

The best if use a octane booster (as it contains cleaners) and then go NS H'way or better still track and whack !! The increase pressure from the whacking will help the cleaners to work better....

 

If just use cleaner then drive normally, IMHO....no use leh...

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February 9, 2002

Idea hor [cool] Pour in 200ml of Eagle One injection cleaner and lut all the way to Desaru for holiday will be fun [laugh]

 

 

 

The best if use a octane booster (as it contains cleaners) and then go NS H'way or better still track and whack !! The increase pressure from the whacking will help the cleaners to work better....

 

If just use cleaner then drive normally, IMHO....no use leh...

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February 9, 2002

Gold Eagle lah, Eagle one only do wax and polish. Don't go pouring teflon polish into your fuel tank ok! [:p]

 

Go Kukup for seafood also good! [cool]

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Neutral Newbie February 9, 2002

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February 9, 2002

Recently I just tried STP complete fuel system cleaner. It's good! Though used on a new car, I can feel it's as sensitive on my pedal compared with before. I've been using STP products for a long time already. i strongly recommand it. Of cos if your car is coming of age, it takes some time to see results. i took 200 km on my XR4 before I saw results. The website is www.stp.com. Hope this helps. Its available at B1 Golden Wheel Centre, Giant, major petrol stations.

 

 

Lester

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Clutched February 9, 2002

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February 9, 2002

I had run fuel injected cars more than 200,000kms on the odo. Never had a injector problem. These stuff are pretty low in technology and are not prone to breakdown. In fact, injectors don't run 100% duty cycle in a car. At most 70% in a stock std car, that we are talking about full throttle.

 

So, on daily driving, injectors are probably running 20% to 30% duty cycle. If it is choke, the O2 sensor will sense the mixture is not correct and then the ECU will adjust and keeps the correct fuel going into the engine. You fuel consumption and power will still be the same.

 

That's why you can put in all kinds of injector cleaner into your fuel tank, but your fuel consumption don't improve. The only way to choke the injector will be debris from your fuel tank and this cannot be solve by way of injector cleaner. So, always maintain your fuel filter, change every say 50,000kms.

 

Our petrol are also filtered before it is pumped into your tank. Not so dirty to start off with.

 

Conclusion : No maintain needed on fuel injection system.

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February 10, 2002 (edited)

Okie lah, paiseh man, new to cars lah. Dunno anything thats why. [:p]

 

Dont be surprise I pump diesel into my petrol tank. [crazy]

 

 

Gold Eagle lah, Eagle one only do wax and polish. Don't go pouring teflon polish into your fuel tank ok! [:p]

 

Go Kukup for seafood also good! [cool]

Edited February 10, 2002 by Shagmobil
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February 10, 2002

Yup! Thanks all the pros for the advise. Happy CNY! [laugh]

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February 10, 2002

Blue, so say for our bricks the injector cycle is ECU controlled right? Will they go to say.....90% duty cycle when the overboost is temporarily kicked in? [shocked]

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December 17, 2002

Give u a short description, w/o the actual calculations.

 

Say u got 240cc +/- injectors (which most 1.6-2L NA cars are using). The potential HP output would be around 180-200HP. My stock is 130HP, with some of my own tuning, it stilll kicked up only to 145hp at the flywheel. It will never reach the max duty cycle.

 

Even with your overboost or me kicking in my VTEC and redlining it...as said will never work >70% DC.

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