Rebirth of Khyber 1996 - Daniyal

[miqdadkanani]

guess my next task would be to learn to service the carb all by myself.

Sahi kehte hain: purani gaari insaan ko adha mechanic bana deti hai hahahah

[Xulfiqar]

Lol

Learning how to set a carburetor can either

1 - make you understand how its set
2 - make all your hair gray overnight
3 - make wife pack her bags

Dont forget this sentence “the carburettor is the very last item you touch when tuning an engine”

[sardarg]

And then you have morons who only work on “half salaff shtarrt” and “sunn injann” who start messing with the carby without checking if other parameters like valve clearances, ignition advance curve, ignition coil, rotor and cap performance is actually ok.

bulls eye sir !

[miqdadkanani]

https://drive.google.com/file/d/19dp9Ya4rmDDvxH8F_85yrX9sjzh998Od/view?usp=sharing

@helper_learner @xenerking @nnabeel @capsat @Xulfiqar Please listen to the sound and some squeeking noises.

[miqdadkanani]

https://drive.google.com/file/d/19rU4NLpNggVNQ0EunXrpi4f3E942ybjN/view?usp=sharing

Here is what happened when i pushed the pedal/accelerator to the max (immediately) and released it (immediately) on idle. Did this 4 times and the car almost died. It took another 3,4 mins then to stabilise the RPMs.

[capsat]

quiet strange. fuel economy. my 1300 cc automatic car is running 8 km / ltr in city and 10+ over long runs. I never switch off aircon. few days ago i smell bad fuel at morning warm up immediately only adjusted 3 sec (as in clock needle movement) retard over mixture screw. 2 minutes later it was dripping water.

[miqdadkanani]

Yesterday, fuel almost ended and the car starting shaking. I was leaving office late night so I poured in 3.5ltrs which I had in a reserve can. After driving 10kms, I went to the station and asked to max fuel it. The meter stopped at 25.3litres.

This is the gauge reading. What's wrong?

[miqdadkanani]

Also, when I started the car today (cold start), I could hear "thhuff thhuff" sounds near the tapper cover/carb. Something like vacuum leak or air leak. It came after every 3,4 secs but eventually died out when the rpm stabilised after 5 mins.

[Xulfiqar]

your exhaust manifold is leaking.

causes
1 bad gasket
2 head warped
3 manifold warped
4 studs stripped for manifold.

use a small pipe to find out the source of leak.

[miqdadkanani]

yeah this could be the reason. I remember when Irshad was fixing the head, he said that the exhaust gasket is genuine and in good condition (pure steel made i guess) and he used the same. I had gotten a custom one made but he used the previous one. This i believe is the reason for low mileage as well. When initially my exhaust pipe / drum was leaking, i had a very very poor average which improved by 40-50% after i got an entirely new one installed.

[miqdadkanani]

Now given there could be multiple problems in my car 1) coolant loss (can be welch plugs or head gasket leak), 2) carb issues causing jerks, idling issues, 3) exhaust manifold issue,. Would it be advisable to get a compression test first of all to confirm that there is no compression or any such issue at least within the combustion compartment (cylinder and head), and then proceed to set the timing, carburetor, tappets, etc.?

What sequence would you advise? First do the pressure test to find coolant leak, or get this exhaust manifold thing sorted, or carburetor diaphrams and jets issues, or a compression test?

[Xulfiqar]

first do a full thorough tune check, (all these are adjustable) and make sure all pieces of your carburettor work. - welch plugs etc are teardown repairs.

I would suggest to check the exhaust manifold leaks first though. As that can upset the carburettor too.

then do a full tune check and see if the engine behaves like it should.

[capsat]

the fuel gauge in cluster is faulty as well

[miqdadkanani]

use a small pipe to find out the source of leak.

please explain a little more.

I read about the foam/bubbles method as well. Dropping some lather/dishwasher mixed with water. It should make bubbles. Right?

[brownrose78]

@xulfiqar
New/ Genuine carburettor of Cultus 2000-2007 is still available/provided by some 3S dealers so if
Carburettor of Khyber gets too much out of order, can we use Cultus Carburettor here in Khyber instead of repairing/ fixing/ servicing of Khyber old carburettor?

[miqdadkanani]

last year, mehran autos at plaza had a genuine khyber carb available. he was demanding 84k for that . lolll. not sure how much would he be asking for it now

[miqdadkanani]

Not in favor of doing this but talking strictly from a financial cost/benefit point of view:

Assuming khyber gives 12kmpl on its own carb (0.083litres / km) and 15kmpl on Mehran carb (0.066litres/km)

So every kilometer i drive on Mehran carb, I save 0.02litres of fuel.

if my engine gives 20k kilometers before completely dying out. I can save : 20,000 x 0.02 = 400litres of fuel

at today's rate of PKR291/litre. This equates to a saving of PKR116,400.

Shop owners and scrapyards are asking PKR70-90k for a complete Khyber engine (japanese) and PKR50-60k for a complete local engine (local khyber but a few 1000s kms driven only, they claim those were government cars and were left to rust in scrap until sold at throwaway/auction prices).

So even if an engine completely dies out after 20,000 kms driving it with Mehran carb. The net saving would be : PKR116,400- 80,000 - 20,000 (labor, machinist and new oil etc charges for installing a new engine after 20k kms) = 16,400. The completely died out engine would be sold for at least 15k. That makes for a saving of almost PKR30,000.

For me and my family where car is driven hardly 700kms in a month, this means i can enjoy more fuel efficiency for 3 years and then get a completely new(kabli) engine.

[miqdadkanani]

Please note that the above is strictly a theoretical calculation. I dont intend to experiment this at least.

[miqdadkanani]

being a finance guy, i can further say that every penny saved today will generate 20% in a bank account. 116k saved will have generated almost another 35k or so after taxes in 3 years .However, that will compensate for the cost of new/kabli engine that would have soared to north of 100k by that time

[Xulfiqar]

Your calculations dont include the 1=1 or A=A. Dont assume 1=alif and A=@ because both look similar.

You are assuming that everytime you can buy a new engine with same factory performance and “control specification drivability” if suzuki could save money by installing 800 carby on 1000 engine they wouldve saved a ton of money (literal millions because they made millions of these engines)