Why Khyber gives blue smoke?

[amee_hamza]

Hello every one. I am new here dont know how to post and get to know about my query.
Kindly let me know what will be the problem.
I bought a khyber 98 model car recently. Car is in superb condition according to the mechanic at the time when i was buying this car. There wasnt any work required in it. Car is on both petrol and cng. Last sunday i went to mechanic for oil change. For the frst time i changed oil in it as i bought this car on last tuesday. I bought original zic 20w50 engine oil and changed the oil and oil filter. After that i asked for the radiator water change. Mechanic drained all the water from radiator by removing its pipe till clean water came out. Then he fixed the pipe, added new water along with coolent. After that one of the bush of head had a minor leakage. I changed it. After that i asked for plugs chkup. He removed all the 3 plugs and chkd they were clear and then again inserted them back to there place. A lil bit setting he might have done with acceleration or gas setting or whatever i dont knw .. after that i went to car wash for full service. Plugs were covered with shoppers and the wires too. He frst used a mixture of diesel and soda with help of air pressure on engine. Then with piece of cloth he cleaned engine and then washed again. After body wash he dry whole engine and asked me to start the engine. When i started my car, car was started at half self but silencer gave blue smoke.. i accelerated my car twice and thrice but the quantity didnt decreased. Then i left my car start while he was drying. After some time the smoke qunatity became minor. I took a round of about 10kms and then before parking my car there was a lil white smoke coming out from silencer. The next day when i started my car.. a frnd of mine was trying to chk something i dont knw he gave 2 3 full accelerators and then car started giving a blue smoke .. a cloud of smoke came out from silencer. Then he constantly accelerated my car and there was constant smoke. When he lifted his foot away from accelrator and left car start.. the smoke decreased and the car became normal but smoke didnt went away fully .. there was still a little amount of light blue smoke coming out from silencer. At night time i cinverted my car from cng to petrol and took my car for a round of again 10 to 15 kms and when i came back the car was giving a little smoke on petrol too..
Kindly let me know what will be the problem ? Before sunday the car didnt gave any sort of smoke but after the work done as mentioned above on sunday its giving away blue smoke from silnecer. One thing to be mentioned when i bought the car i changed the air filter, and also tunning of carborator and then i came from peshwr to lahore on my car and the car didnt even stoped or misbehaved on the whole way.
Please help me and suggest what to do for this smoke as its irritating me bcz my car engine is water throwing as water comes out from silencer too and it easily goes on 100 above on both petrol and cng..
Regards.

[omersiddiqui5482]

1st and foremost don't ever pressure wash the engine.

Check if there any oil residue in the silencer.
Also notice if you smell petrol when your car starts on petrol.....
Also check the engine oil level on the dip stick...

What oil was in the car before changing and have you had the car tested for compression...

[amee_hamza]

The is black oil in silencer, as the water comes out from the silencer is also black. The silencers inner side is black and oily.
2nd there isnt any sort of smell as if i start my car on petrol.
I chkd the oil dip stick today oil is full.
I dont knw i bought it recently from bargain. I dont knw which oil was in it.
What is the compression test ? I dont know about it. As its my frst car

[omersiddiqui5482]

Bhai check YouTube on how compression test is done. Asan alfaaz mein it will tell you the health of your engine. If the smoke persists and increase with time the valve seat are gone you will notice a decrease in the oil levels after a few hundred kms... Go ask your mechanic. I hope he is the right guy.. @dayrider Bhai plz suggest I think the fellow is from Peshawar.

[def3nder]

Bhai whats the petrol average you are getting on your khyber?

Please stop using any soda diesel etc apply in your engine bay or any pressure water applied in the engine bay. Clean engine bay by yourself with a wet cloth.

About the smoke. sometimes it happens when you change the engine oil brand it starts giving smoke for sometimes and then it will vanish. @omersiddiqui5482 bhai whats the reason for getting oil in the silencer?

If not sorted and engine oil is reducing then rings issue or valves seals issue. And who said to use coolant in the cooling system without cleaning the cooling system of the car? did you clean water body before adding coolant? Which coolant you are using?

After that one of the bush of head had a minor leakage

@omersiddiqui5482 whats that ?

[omersiddiqui5482]

i haven't seen any bush in my Khyber @ defender

Oil in the silencer is due to bad valve seat and Piston Rings oil seeps from the distorted Rings and seals in the exhaust manifold, burns and leaves residue in the silencer. but there can be soot too hence i asked him to get a compression test done first!

[amee_hamza]

Actually its my frst car, my czn forced me to wash engine with soda and diesel for removal of oil stains from engine.
Secondly i didnt chkd its average on petrol as i am driving it on cng. Just last night i converted my car to petrol and drove a few kms like not more then 15 on petrol.
About the oil in silencer. There isnt oil .. silencer is just black from inside and water comes out from it while on runing engine so the water due to blackness also turns black. I chkd the air coming out from silencer it wasnt oily..
Yet the oil is full and water in the radiator is also full. My car is driven a total of max 30 to 40 kms on petrol and 10 to 20 kms on petrol after oil change and the oil level is full on dip stick.
Yes i dis cleaned water body until clean water came out. Then i added fresh water and after adding it i added coolent. It costs 400 and i think it was of guard company.

[amee_hamza]

Head from where we insert oil into car .. uski ek washal kahty hain ya jo bhi waha se wo thore oily se the.. wo aisa lag raha tha k shyd washal khrb hai to thora leakage kr rae usko change krwa kr new dalwa liaa tha..

[amee_hamza]

I dont knw from where to do this compression test. As i am near to sheikhupura city and living here in a factory due to my job.

[omersiddiqui5482]

he means either the Oil Filler Cap Rubber Seal or the Cam Cover Seal!

[omersiddiqui5482]

Sheikhpura is Like 40Kms from Lahore Lahore mein yeh test hojayega. @tintin1 sir i you can guide

[amee_hamza]

This is my car started on petrol. Half an hour ago picture

[omersiddiqui5482]

I dont see any Oil Residue in the Exhaust! it is just black due to the carbon that is usual! go to you mechanic and ask him to adjust the Air Fuel Mixture Properly! and Keep Noting the Engine Oil Levels!

[amee_hamza]

Lahore is almost 1.5 hour drive for me. Ok will goto lahore on this sunday.. are u from lahore ?? And from where in lahore ye test ho jae ga ?? And how much it costs. And is there any workshop jahan computerised tunning hte ho ?? May be computerize tunning se plugs ki adjustment amd petrol gas setting etc se ye sab khud theek ho jae. Qk mera shak plugs ki wajja sw hai car pe .. mechanic ne sahe nai lagae ya phir us ne petrol gas ki setting ko change kia thats why may be aisa kr rae.. bcz is se pahly kabhi nai kia. Aur rings ya valve seal kaisay kharab ho skte ? Agar aisa hta tomai lahore tak car le kr aya safe and sound ae. Na rastay mai ruki na khari hoi na tang kia na koi sound ya noise ae aur na he is ne smoke de kahe pe bhi even kalar kahar ki turns pe bhi car was going great. Us k bad itna drive he nai ki bas khari hte hai bht hai to halka sa 5 km ka round laga kr khari kr daita qk din mai ek bar atleast start lazme krta hn ta k kli maslay na ae..

[amee_hamza]

Ok i have to adjust the air fuel mixture properly and engine oil level ka kia krna smjha nai ??

[omersiddiqui5482]

what we explained about the the Rings and the Valves is the worst case scenario bhai! you are worrying too much. Go to your mechanic First and ask him to fix the thing! the is no big issues with it! Also Your car is a Carburated G10 iski computerized tuning nahi hoti.

Just get it tuned properly change the spark plugs and you will be good to go.

[amee_hamza]

I was telling you about this nut and washal.. isko bush kahty ya nut i dont knw

[omersiddiqui5482]

Just keep monitoring the engine Oil Level!

[amee_hamza]

Ok i will visit mechanic in lunch break, usko kahta hn k air fuel mixture ki adjustment karay.. plugs saaf thay mechanic kah raha tha.. change krwanay ki koi zarorat nai .. kia phir b mujhy karwanay chahea ?? Aur is k elawa baki tunning mai kia kia hta jo k mai karwa lon? Almost saray kam to krwa liay mainy.. plz dont mind bhai apka sir kha raha hn but actually its my frst car and yes its true am much worried. Its good platform and experts hain yahan pe thats why ap logo se poch raha hn .. new hn phir time k sath sath seekh jaonga inshAllah

[omersiddiqui5482]

Go and ask him why the car is giving blue smoke!

Also it is advised the when ever you buy a used car you should be changing the Plugs, Belts and all the fluids.

Ask him to clean the Carburetor if he hasnt at first and Hope For Betterment!

Best Of Luck!