Ask Xulfiqar - An Automotive Encyclopedia

[brownrose78]

Sir @capsat
Did as per your advice. Now message is displaying "You flagged this as off-topic"

Is it correct way?

[capsat]

you should have selected the last option SOMETHING ELSE and added your message to move the post

now wait do not attempt to flag your own post again. Flag mine as explained

[brownrose78]

Oops, actually did it 1st time so Ghalti sey mistake ho gaya

BTW Sir, yesterday when tried to connect OBDII scanner with concerned port in neighbors Corolla but no signal is coming; checked concerned fuse & wiring. Apparently all seems Okay but no port is non-responsive. How to fix that issue?

This also happened some times ago in our Corolla but that was Fuse issue that time.

[capsat]

create new thread with make model engine & transmission type of vehicle and raise query. Would be best if obd port location picture can be attached., Please

[brownrose78]

@capsat
Bhai, as still i am in office, s can send you related information, Picture part can be done tomorrow Insha Allah
Make: Toyota Corolla XLi
Model: 2008
Transmission: Manual

[capsat]

when tagging capsat - please skip adding any salutations. as in bro bhai sir payr paon payeen payn di etc etc

OB port in 2008 Corolla is under steering over the sidekick panel. if it is in coma visit an electrician to check the connectivity. apparently OBD non-responsive is bad wiring.

[xzap042]

What about for pindi/isb? Specially for suspension/steering/wheel bearing jobs

[capsat]

@spectra the key person for any issues in RWP / ISB
Humsafar Auto Care, Kashmir Highway service road H-15 (Jhangi Syedan) Islamabad.
Dial 0323 4440094

[brownrose78]

Yes, yes, I know its position as there is similar series at my home too.

Car is OK but stalling at idle, Rpm fluctuates. As per my neighbor /owner, he has not connected scanner ever

[syedatayyabadanish]

Assalam alaikum,

What might be wrong in a car if it takes multiple self to start even when the battery is new?

[capsat]

bad ignition timing, in present day efi car it may be bad fuel pump as well

[tintin1]

This post was flagged by the community and is temporarily hidden.

[syedatayyabadanish]

Thank you for the replies. Our car Suzuki Margalla 96. The car requires three or four selves to start. Is the problem caused by fuel pump or spark plugs?
What may be the possible reasons in an old used car?

[ZainMahdi]

Thank you for the replies. Our car Suzuki Margalla 96. The car requires three or four selves to start. Is the problem caused by fuel pump or spark plugs?
What may be the possible reasons in an old used car?

Improperly working or disconnected choke.

[syedatayyabadanish]

What is a choke? Does it require cleaning or is it something to replace? What should I tell my mechanic?

[ZainMahdi]

Its present in all carburetor cars. In layman terms:

When the engine is started cold, the choke temporarily restricts the air supply in the carburetor. This leads to a richer air fuel mixture (i.e. more fuel than normal).

Its very easy to re attach and adjust, but most mechanics will give you lame excuses and won't do it. Most mechanics can't properly work on carburetors, and as a matter of false pride they'll never admit it.

[capsat]

Our car Suzuki Margalla 96. The car requires three or four selves to start. Is the problem caused by fuel pump or spark plugs?

@margallar @babarhyd

seems bad ignition timing,

@zainmahdi auto choke is activated through vacuum line to raise RPM bringing engine to operating temp and goes low.

[ZainMahdi]

Our car Suzuki Margalla 96. The car requires three or four selves to start. Is the problem caused by fuel pump or spark plugs?

auto choke is activated through vacuum line to raise RPM bringing engine to operating temp and goes low.

If I'm not mistaken, that vacuum line controls the fast idle. The choke plate itself operates on coolant temperature, whether through a bimetallic strip, or a wax pellet. As the coolant heats up, the plate opens up gradually. If the spring connected to the choke plate is disconnected, it will just hang open freely. Most mechanics tend to disconnect or remove this spring.

Btw, if the thermostat is missing, a connected choke won't fully open during driving, since the coolant doesn't heat up enough.

@syedatayyabadanish, get your Margalla to the factory ignition timing of 6 degrees (or 8 if you're using 95 octane). If it's still hard to start, then check the choke next.

In extreme cases, if all else is working, head gasket issues or low compression can be a source for hard starting too.

[capsat]

this thread contains correct guidance for carb engine margalla with images

[ramm1]

Assalam o alaikum,

Kindly guide me in this case :

I bought civic 2009 manual in january 2020, mileage was 88 K (which i doubt is true). However I replaced engine oil (dont know which grade they poured in) from dealership in january 2020, car was not used much during covid. Yesterday I checked engine oil and it was just touching the bottom line. Car has been driven around 3500 KM in this time.Can you please guide which engine oil should be used ? As Honda is offering 3 right now, SM 10W30 , SM 5W30 and SN 5W30.

Thanks in advance.