Using Petrol/WD-40 to clean engine valves

[antiflag]

Guys, i just want to ask you if it's possible to clean the engine valves, air intake valves and injectors by inserting little amount of petrolor kerosine oil(mitti ka tael) in the engine oil, intake vaccum, throttle body or should we use WD-40 in the same manner to clean the dirt and carban that sticks on lifters,valves,injectors etc ?

Which is better, petrol, or wd-40 because there are alot of things available in foreign markets like seafoam,BG,red... that you can use to clean these things. or if some expert knows What to use where, would really help.

[whiteangel]

Don't use WD-40 or kerosene oil, that's not what it's meant for.

The best way to clean injectors is to remove them and then clean them. Of course you'll have to take it to a professional to do that. Valves obviously require a different treatment, since they can't be removed without removing the head.

If you are looking for a quick fix, I would recommend Liqui Moly's Jet Clean. It is meant to clean Valves, and Injectors. What basically happens is that they disconnect the fuel line and connect it to the Jet Clean fluid and run your engine for about 40 minutes on the cleaning solution. after cleaning is complete they reconnect everything back together.

I've tried this treatment a couple of times. It increases the car's pick noticeably and improves mileage marginally. Do it every 30,000km to keep valves and injectors clean.

However I am in Lahore and don't know if there are any people in Karachi who deal in Liqui Moly products. May be some Karachi members can help.

Pic of Jet Clean

[wajeeh_4622]

is it available is rwp/isb?

[whiteangel]

Yes I think it is. But I don't know where you can get it from. Ask some members from Rwp/Isb.

I forgot to add that it is not recommended for old, worn engines. But if your car has a high mileage but the engine is still in good working condition, go for it.

First time I got it done my engine was around 140,000 km. Second time at 170,000 km. Now it is almost 200,000 km. I will be getting the same treatment done again in a month or so.

[antiflag]

This is for the injectors only, what about the valves and intake? I've seen so many vdo's in which the guy disconnects the brake booster vaccum line and put seafoam or redex liquid and to clean the carbon on the valves, and even put the same in the engine oil without opening anything, and just starting the car to blow thick smoke which means the carbon is getting out from the silencer.. so i was asking if v can use kerosine oil/wd-40 or any other thing to do the same ?

[Xplorer]

@ whiteangel
From where you do this treatment and which car? or you do it yourself?
Pls. also mention the expenditure.
Thanks

[whiteangel]

@antiflag
This treatment is for the entire fuel system and exhaust, which includes injectors, intake and exhaust valves. However it does not clean the throttle body/carburetor. Best way to clean that is to remove and clean it manually.

I don't think you can replace seafoam with kerosene oil or WD-40 and I would not even recommend trying that on your car's engine. If you could then you wouldn't need Seafoam in the first place.

@Xplorer
There is a workshop near Mozang in Lahore that does this.
My car is a 1996 civic exi
You can't do it on your own since it requires some additional equipment. The cleaning solution is poured into a pump which attaches to your fuel line. It works like your car's fuel pump and provides the cleaning solution to the engine under pressure.
First time I got it done it was around Rs. 1300. Second time the price went up to Rs. 1700 this time I think it will cost me more than Rs. 2000 since prices have gone up considerably. Time period between each treatment, for me was about 2 years.

[hassam]

thank you for the info whiteangel... do you have their telephone number (mozang)? please do get it next time you visit them and msg me personally...

[whiteangel]

Contact # 7554456-57. I don't remember the guy's or workshop's name though.

[antiflag]

true.. makes sense! I wonder where can you get this treatment done in Karachi .neway, thanks alot for your help. btw i have previously used STP Fuel System Cleaner with JET FUEL .. is it the same?

[whiteangel]

There are many other alternates available in the market. Most are the DIY type, which you can simply pour into your fuel tank. I have not tried them and thus I cannot recommend or discourage their use.

What I am telling you about is something that I've tried and tested and it has worked for me.

See this for more info:
http://www.liquimoly.de/liquimoly/produktdb.nsf/id/e_5118.html

[hassam]

thanks whiteangel

[Xplorer]

@whiteangel

Rs. 2000/- are too much. If all the injectors are removed and manually cleaned and cylinder head removed and manually cleaned, it will cost Rs. 1000/- labbour charges and only a little petrol.

[whiteangel]

@xplorer
If you get it done from the Honda dealership. Last time I remember they used to charge Rs. 1500 for injector service. But this was about 2 years ago, I'm sure it's much more now.

Throttle body service is about 700 Rs. I think.

If you get it done elsewhere, sure it will cost you much less. In fact if you are the DIY type you can do both the above yourself. It's not too hard.

However, you can't remove cylinder head just to clean valves. The cylinder head is only removed during complete engine overhaul or when you bend a valve due to broken timing belt. That where Liqui Moly Jet Clean comes in. It helps you clean the valves without removing the head.

The problem is that I don't know of any other place where I can get the above done, so it is not possible to make a price comparison. However, I don't thing spending Rs 2000 after 30,000 km is a big deal

[umar2606]

Most of us know how the injectors get clogged. Its nothing else but the fuel that we use which causes clogging. Every time we turn off our car's engine, last drop of petrol dries on the nozzle of the injector and leaves behind deposits. These deposits become firm with the heat of the chamber. The more we drive our car, more deposits accumulate. Gradually it starts to restrict the flow of petrol from the tiny hole on the nozzle and the injector starts to lose its efficiency. This causes the engine to lean misfire and hesitate on different rpm, power and pickup is lost, the car becomes uneconomical on petrol, unburnt fuel can be noticed in the emission and worst of all the wear of engine becomes faster. Only 8% to 10 % clogging in the nozzle can cause all this

Proper cleaning can restore their like-new performance. There is no need to replace fuel injectors unless they are actually gone bad. Injectors are designed in such a way that they are not very convenient to clean. They are sealed units and cannot be opened for cleaning. Ultrasonic cleaning is internationally accepted MOST effective process for cleaning fuel injectors. It is cheap and comprehensive solution for the problem.

In ultrasonic cleaning, the injectors are removed from the vehicle, tested for symmetry of flow and spray pattern on the test bench. The statistics are noted on a sheet. The injectors are then cleaned ultrasonically after which they are once again tested for the rectification and finally mounted back to the engine. This process eliminates missing, rough idling and hesitation. It restores power, improves economy, emission and generally enhances the performance of the engine by improving flow of the fuel.

[Xulfiqar]

your valves would not be sooted up as cars in Pakistan usually have no EGR valve, they soot up slightly because we love to run our engines dead cold all the time.