Self Tunning - Khyber G-10 (Plugs, valve clearance, spark gap etc)

[brownrose78]

My Khyber has started problem of petrol consumption.
On petrol, it is giving 7 to 8 kmpl while on cng it is giving me 14.5+ Kilometers per Kg(without A/C)

BOth are calculated on Karachi roads and moderate traffic

@mustansir44 @capsat @arsal396 @s15 @speedster_101 @Hassan1991
Which part seems responsible?

[abuzaid425]

Its toooo much costly

[brownrose78]

Bhai,
As you asked for top quality plus you have also written that price is no problem, so pakwheels shopping is reliable place otherwise you can find in open market ranging from Rs. 250 onwards and metal one starting from Rs. 350

[brownrose78]

@mustansir44
Have you upgraded your self from 13-D or not yet?

@ThinkingHave you bought new gaskit ?

Anyways
Yesterday , my car refused to start, brought electrician and found that "Kuppy" of new self installed was out of order, so replaced that part

@Hassan1991
My petrol consumption in Khyber is becoming worsen day by day, it is now hardly giving 7 to 7.5 Kilometers per Litre on petrol while giving 14.5 Km per Kg (without A/c) & 14 Km per Kg (with A/C) on CNG, Furthermore, too much black soot is accumulating inside silencer while on very high rev(around 7k to 8k RPM), it was giving black smoke too at Petrol

[Hassan1991]

Sir mixture is going rich.
Check for any restrictions in air. If you drive more often on cng that cause jets to get choke.
Poor float valve can also cause rich mixture but also starting issue.

[brownrose78]

There is no starting issue right now. Also no air restrictions is present.
Float valve....Needle valve... Then seems it must be the Carburetor guy job purely and will not be handled by ordinary mechanics.

[Hassan1991]

Yes sir, carby's are easy and complex at same time.
You can start diagnosis from choke mechanism and vacuums.

[mustansir44]

Yes. I have replaced my self from 13d. It is working good till now.

[brownrose78]

@mustansir44
So you also got Gerrari based(Term/Tag) which they use.
Is it of Mitsubishi brand?

[munawar147]

Salam everyone, have anyone tried engine flush, because many of us using old cars and so many sludge can be present inside engine. Recently I bought a car and when I was inspecting my car I opened the oil cap, I saw rockers are darkish black maybe there is a lots of carbon or sludge present inside. So I did a little research and ends up with engine flush.

All seniors here plz help me out with this, do I really need engine flush? or its normal to have darkish black deposits in old engine.

What I was planning to use is HOME MADE ENGNINE FLUSH which consist of Diesel, Kerosene and Engine oil in desired quantity and ratio. Recipe from here

Home made engine flush formula

First of all drain old oil and then follow the below mentioned formula. Just try the home made engine flush formula as under; 1) Put 1.5 Liter diesel into engine. 2) Put 250 ML kerosene oil into engine. 3) Put 1 Liter cheap engine oil into engine Rs 120 per liter. Run the engine in idle speed for 10 to 15 minutes. Stop the engine and drain the oil. Replace engine oil filter and add new good quality oil such as Shell HX7 5W/30. Best homemade formula for engine flushing. Perform this engine flush…

@Xulfiqar, @smijaz

[munawar147]

Help plz...
@capsat, @margallar

[munawar147]

Help...
@ahsanonline, @syncview

[salman.r107]

Here's a post by Xulfiqar that might clear it up. Btw remove the tappet cover and post a couple pictures of the rocker arms etc so we can know how much sludge is there.

Ask Xulfiqar - An Automotive Encyclopedia

A question from this post.

You mean get a 30 wt and half litre kerosene oil.
Is their a specific ratio of this oil and the kerosene to be mixed and poured in the engine?
30 Wt ko mechanics ke zuban me kia kahte hain?

30/40 aail - 2.5 litre
0.5 litre mitti ka tail

mix and pour into engine, run for 15 minutes on hot engine, DO NOT rev engine at all. drain out and fill with new oil.

please note this is only specified when you have thick solid sludge in your engine. Do not apply this on regular bases as fresh oil has enough detergency in it to remove the built up varnish deposits that you see in normal engines.

Solid sludge usually happens due to choked PCV or leaks on the valve cover gasket. Repair those first.

[pwuser152533991444]

Be also prepared for the upcoming oil leaks from different seals, if that thing is holding it.

I would not recommend bothering unless you are very sure about the seals (like main front, rear, oil pan). And you won't be getting any extra hp, or mileage improvement from that. Why disrupt some thing when its working fine.

So just make sure that you are using good quality with filter, running at optimal temperature.

[brownrose78]

I have personally done flush via branded Engine Flush oil from M.M. Lube Oil Karachi on my Khyber's Engine.

Because i had to switch it from Shell Mineral 20w50 to Zic Fully Synthetic 10w40 as i had no maintenance record from previous owner plus i also saw such black tar type deposits in my engine.

No seal leakage or any other issue came.

They did it properly with around 20 to 25 minutes engine running and really it relaxes engine as too much sludge, tartar type material emerges out, also observed little improvement/difference in Temperature of car after that flushing

[margallar]

yes you can safely use it.

above advice by @brownrose78 is good

but, you dont really have to use it , just make sure pcv valve is good, thermostat valve is present and working good, fan is on auto.

then just get a good oil, i like caltex 10w30. and change it timely, it will clean itself

[uppalslink]

اسلام و علیکم مارگلر بھائ

[saad2006]

That oil is Api Sn does it contain enough Zinc ppm to be sufficient for Khyber's flat tappets

[brownrose78]

After recent ️ rain in Karachi, I used Khyber much during those days then left car unattended for some days as I was out of station.
Yesterday, during a deep citand full steering rotation, "Daragh Daragh" sort of noise came and bearing type item fell down.
When I went to Mr. Arif ( Axle wala )S.K Engineering works today, he told inner axle star was broken on driving side, reason behined is that rusty car floor has disappeared resulting into fall of Gadri causing vibration on gear foundation and Engine foundation so due to unbalance, that happened.

Additionally after opening, it was found that there was quite "play" in ball joint, spindle surroundings also had crack plus axle boots (both sides) were also replaced

I found S.K Engineering works at Karson Complex, Gulshan-e-Iqbal, Karachi quite reasonable as always experienced and found him. @capsat @abid110 @omersiddiqui5482 @mustansir44

[Hassan1991]

This area need serious welding work.