Cultus Carby: Early morning black smoke

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usman_haider84 (Haider Ranjha) 2014-03-05 16:05:19 +0500 #6

just adjust the mixture ,nothing else.

lonewolf1 (lonewolf1) 2014-03-06 02:39:32 +0500 #7

Mehroz tell me some good mechanic to take it to because my regular mechanic put his two cents worth of artistry already.

umarkhan1 (umarkhan1) 2014-03-06 02:52:34 +0500 #8

carb is running rich on fuel.get a complete overhaul of the carb and install small jets.will solve your prob.
top speed will be 120 kmph with small jets

lonewolf1 (lonewolf1) 2014-03-06 03:31:52 +0500 #9

Need a good mechanic for this in Rawalpindi/Islamabad. Have had enough bad experiences to last a life time.

lonewolf1 (lonewolf1) 2014-03-07 04:01:54 +0500 #10

Umair, I think that maybe the problem. Because my butterfly seemed fine when I had the carburetor serviced around 3 months ago.
The didnt use a carb repair kit though. Are the carb repair kits any good?

umarkhan1 (umarkhan1) 2014-03-07 05:55:31 +0500 #11

no one uses carb rpair kit.
carb overhauling includes cleaning by opening bolt by bolt and some new gaskets

lonewolf1 (lonewolf1) 2014-03-07 05:58:46 +0500 #12

ok I had this done 3 months back and the carb is fine. However, I think the mixture is a bit rich thats all.

ali454 (Ancient Pakwheeler) 2014-03-07 05:59:26 +0500 #13

early morning black smoke only seems like something wrong with the auto choke...until the car is giving very bad average and continuos black smoke..

nfsmostwanted (nfsmostwanted) 2014-03-07 09:06:19 +0500 #14

MY mehran does this when i pull the CHOKE in the morning while cold start up. it gives a black kind of smoke when i pull choke. the engine is in perfect condition . overhaulled 3 months ago
what could possibly the problem?

margallar (margallar) 2014-03-07 09:18:38 +0500 #15

The black smoke is due to rich mixture, inspect the plugs, they should be black if the mixture is rich, the remedy is to get mixture adjusted using an exhaust gas analyzer, most 3s dealers have it

Ishtiaq778 (Ishtiaq778) 2014-03-07 09:44:26 +0500 #16

As i know.........black smoke is normal in morning in winter season.........When choke is pulled.......air fuel ratio is changed and black smoke is also produced than.......if black smoke emit continuously than its problem of carburetor.......If white or blue smoke is emitted along with reducing engine oil, then its Rings,piston problem.
Early morning black smoke from tail pipe , which vanishes after some time is normal........not an issue at all

ahmad40 (ahmad40) 2014-03-10 13:03:20 +0500 #17

Can anyone shed some light on Carburator Repair kit? Is it good? I've never heard any mechanic talk about it.

margallar (margallar) 2014-03-10 16:37:42 +0500 #18

The kits are okay, but the mechanics have no idea of how the carburetor works so they rarely get it running well

sajjad76 (sajjad76) 2014-03-11 08:19:50 +0500 #19

Carburetor Kit used once last year during carburetor service, got nearly RS:/850. from Kohinoor autos Rwp.

lonewolf1 (lonewolf1) 2014-03-11 10:37:21 +0500 #20

Sajjad which shop did you use for Carb service? Any good?

gujartaj (gujartaj) 2014-03-11 16:06:02 +0500 #21

Friends...some one suggest me to use 98 and 102 no jets for my khyber 1989......is it better idea...as i not know current no of jets in carb...regards

getmoa (getmoa) 2014-03-20 04:11:29 +0500 #22

very much seems to be truth but could you tell me why if on petrol car does 120 km/hr with small jets then on CNG it does not even cross that or remain under 120 km/hr.

Does CNG has anything to do with jets inside carburetor?

umarkhan1 (umarkhan1) 2014-03-20 07:58:47 +0500 #23

jets do not do any thing with the top speed on cng

getmoa (getmoa) 2014-03-20 09:31:50 +0500 #24

Yes that's simply fine. However, heard several times CNG performing only a difference of 20Km/hr from its reach at Petrol supply. Could anyone justify it? Why & How.

If smaller jets restricting a car at 120KM/ HRS then on CNG it should be able to cross the figure but more likely to say it will not or definitely i am not confident to view a reply who admits the CNG top speed more than on PETROL.

WHY IS IT SO?

umarkhan1 (umarkhan1) 2014-03-20 10:06:08 +0500 #25

i was having two cultus carby 06 and 07.top speed on both of them was 120 kmph on petrol and 110-115 on cng obviously w/o ac.
the reason is that it is having underpowered engine.its tbi(throttle body injection) version used to produce 55hp and carby one is around 50 hp.
and on cng the hp reduces to 45.
now i am having cultus efi (g10b).it even crosses 140 on cng.hp is around 60.