Ask Xulfiqar - An Automotive Encyclopedia

[Xulfiqar]

@ Xulfiquar

Dear bro, Assalam o alaikom
I wanted to know that which sort of grease be applied to car brake components like pins, shims etc. I live in islamabad and due to frequent rains, brake pins etc sometime make weird noises. I dont want brake components noise so which sort of grease shall i use?? And from where would i b able to get that sort of grease?
Please help

Regards

Sent from my iPhone 6 using PW Forums

you need silicone grease, it is actually waterproof and non-melting. It stays where you put it. Ideal for brake purpose.

Be sure to service the brake correctly, clean the pad carrier with a wire wheel brush and make sure the anti rattle clips are good n tight, the pads should slide very easily in the carrier under finger pressure.

lube with an extremely thin layer of silicone grease where the ears of the pads ride - if you are putting some on the backs of the pads, then use copper or moly antisieze in the tinest amount only - brake pads get blazingly hot when working and using a generic grease will cause it to become oil and run into the friction material essentially ruining your brakes and causing a deathly crash.

clean the slider bores thoroughly and pins too - here you also use a very thin coat of silicone grease. Dont try to shove more here - the pins may go hydraulic and your caliper may bind while driving - cooking the brakes.

[Xulfiqar]

If I plan to keep the vehicle for another 10 years, I may consider spending 300k on a pump. But for a vehicle that is going to be sold on the first good offer, 300k worth fuel pump is a waste of money

at this moment - your best line of action is to call cummins Pakistan and talk to them. - please be wary that if a sensor or fuel control unit is dodgy on the pump the repair can get expensive, if its just replacement of some hard parts like the the metering sleeve or vane pump etc, then its not too bad.

[Xulfiqar]

@Xulfiqar well i dont know how but you have hell of memory when you share your experiences.

1. Just for sake of understanding i was helping student to design a spin coater for thin film deposition. During that i observed and we all know when motor tries to spin something it spins itself too. Keeping that in reference When you put car in gear why does engine not spin opposite and break all those mounts?

2. My and my friends car has wieard noise during cold startup from Self (CL7) its not like over crank but likes slipping starter motor but no vibrations during slip.

the engine does torque in reverse direction - the engine mounts are designed and aligned to take up that movement. thats why sheeda/bubloo/gaama usttad swapped engines either have engine mounts that break everyday or have earthquake vibration.

to test it - get a freind to shift from P to R or D and check how the engine torques in the engine bay.

for the slipping sound, remove the starter and inspect it, is the overrun clutch bad?

[Xulfiqar]

The only problem comes is that there is no instant torque, if I floor it from a standstill, it gives the engine check light and starts accelerating at a rate which is even less than the 2.8. But if I start of with half the pedal or quarter, it goes decently and touches around 145 with ease. People who have driven healthy 4m41, say that my car has no acceleration, they say that when I drive one, only then will I know the real capability of it

I have driven a nearly brand new 3 door 4M41 pajero and can tell you that the torque it can apply easily overheats the transmission, To relate to a similar vehicle available in Pakistan, it goes like a hilux vigo truck with the 1KD engine.

to resolve this problem (as with any JDM of any era) you need to first get some control data first, lets start with the fault codes and what your diesel lab did - they should give you some information of their repair (if they know how to repair these) - if they dont give you anything then its most probably a "safaa karke pack kardo" deezal pump walay ustaad - tasalee bakhsh kaam etc.

your engine balking at more than half pedal (reading your post and not knowing any errors) leads me to a sticking fuel load control unit or bad advancing unit on the pump.

It can also run super bad and noisy if the timing is out. Have you verified it?

[Xulfiqar]

@Xulfiqar
1.which is the best brand selection for Automotive Paint & Puttty.
Denter work will finish tonight so tomorrow he will bring paint colour.

2.Colour code written on our Tikli inside bonnet(engine bay)is "045". White something like off white in fact.
Is colour available by this code or classic way of opening "petrol lid" & match colour via this?

3.i saw some "ZK" brand automotive paint?How is it?
What you guys suggest?

I worked with glasurit or standox paint systems - they were expensive but worth it honestly. The paint jobs looked great years later. The code 045 you see is the shade number, you can buy it in gallons too if you want.

The problem is that if your car is old, the shade wont match as your paint would have weathered down and changes hue and tint. That is why painters use the fuel lid but that is wrong too as the paint on vertical surfaces change differently from horizontal surfaces (depending on how your car is).

e.g. usual diesel ragra service station wash will make a white colour go brownish tan. so will some odd "rubbing polishes" - Make sure that your paint ustaad actually is skilled in such paint and knows how to blend panels together.

[aamirahsan89]

at this moment - your best line of action is to call cummins Pakistan and talk to them. - please be wary that if a sensor or fuel control unit is dodgy on the pump the repair can get expensive, if its just replacement of some hard parts like the the metering sleeve or vane pump etc, then its not too bad.

Cummins isn't responding to any of the phone numbers listed on the website, in fact all those numbers are no longer in use. I sent them an email, awaiting a response

[wasim625]

OK. Can you please guide how can I bed in car rear drum shoes? I am confused bedding them as we bed in front disc pads since front pads engage before the rear pads that makes it a bit tricky bedding the drums or we can use hand brake to bed them may be?
And can I use the same method you taught me once by going easy on brakes for first 500 KMs to bed in motorcycle drums too?

Bumpxx

[Xulfiqar]

Bumpxx

in drum brakes, hand brake helps in bedding them - make sure the automatic adjusters are working as they ratchet and keep the shoe in ready position near the drum.

[aamirahsan89]

I have driven a nearly brand new 3 door 4M41 pajero and can tell you that the torque it can apply easily overheats the transmission, To relate to a similar vehicle available in Pakistan, it goes like a hilux vigo truck with the 1KD engine.

to resolve this problem (as with any JDM of any era) you need to first get some control data first, lets start with the fault codes and what your diesel lab did - they should give you some information of their repair (if they know how to repair these) - if they dont give you anything then its most probably a "safaa karke pack kardo" deezal pump walay ustaad - tasalee bakhsh kaam etc.

your engine balking at more than half pedal (reading your post and not knowing any errors) leads me to a sticking fuel load control unit or bad advancing unit on the pump.

It can also run super bad and noisy if the timing is out. Have you verified it?

Well as for the pump repair, it was one of those tasali baksh ustaads who said that they replaced a kit in it after which it stopped leaking and said that it's a healthy pump.
Well I haven't found a fellow trustworthy enough to check these things. I recall using the self diagnosing system of the vehicle and that gave an error code 041, which I think is fuel pressure

[Xulfiqar]

Well as for the pump repair, it was one of those tasali baksh ustaads who said that they replaced a kit in it after which it stopped leaking and said that it's a healthy pump.
Well I haven't found a fellow trustworthy enough to check these things. I recall using the self diagnosing system of the vehicle and that gave an error code 041, which I think is fuel pressure

code 41 on this is a throttle solenoid valve error which can also be thrown by bad injector nozzles as the ECU has no way of checking injector nozzles because it assumes they are always perfect - it then throws a throttle position error because the solenoid goes out of range.

please remember these nozzles are two stage - so make 100% sure that the diesel pump guys actually know what they are doing - usually tasalee baksh pump walay hazraat dont have any clue about these and screw it up. If the nozzles are not balanced the pump will think the throttle solenoid is bad.

the nozzles need to be set 100% alike.

[hdkhan24]

Where can i get custom made headlights for Honda city 2015 in karachi do you know any one ?

[aamirahsan89]

code 41 on this is a throttle solenoid valve error which can also be thrown by bad injector nozzles as the ECU has no way of checking injector nozzles because it assumes they are always perfect - it then throws a throttle position error because the solenoid goes out of range.

please remember these nozzles are two stage - so make 100% sure that the diesel pump guys actually know what they are doing - usually tasalee baksh pump walay hazraat dont have any clue about these and screw it up. If the nozzles are not balanced the pump will think the throttle solenoid is bad.

the nozzles need to be set 100% alike.

So if I scan the vehicle again and provide the error code, would that be good. Or should I just pour in some injector cleaner?

[afnan.bashir]

the engine does torque in reverse direction - the engine mounts are designed and aligned to take up that movement. thats why sheeda/bubloo/gaama usttad swapped engines either have engine mounts that break everyday or have earthquake vibration.

to test it - get a freind to shift from P to R or D and check how the engine torques in the engine bay.

for the slipping sound, remove the starter and inspect it, is the overrun clutch bad?

I checked engine moves back and front, but what is the case when car pulls hard? mounts should break ?

Boy removing starter is PITA first have to remove Intake Manifold for thhat. By the way why is that clutch there? noticingly this sound comes at end not start of self

[argtr65]

@xulfiqar well i dont know how but you have hell of memory when you share your experiences. 1. Just for sake of understanding i was helping student to design a spin coater for thin film deposition. During that i observed and we all know when motor tries to spin something it spins itself too. Keeping that in reference When you put car in gear why does engine not spin opposite and break all those mounts? 2. My and my friends car has wieard noise during cold startup from Self (CL7) its not like over crank but likes slipping starter motor but no vibrations during slip.

Do you mean to say starter motor spins freely ( just like incase of leaky compression)?

[afnan.bashir]

Do you mean to say starter motor spins freely ( just like incase of leaky compression)?

Nops that is why its strange. It cranks fine. Just when car is abot to start i hear geeeerrrrr noise from self. and it is not same of when you over crank

[metalhead]

I checked engine moves back and front, but what is the case when car pulls hard? mounts should break ?

Boy removing starter is PITA first have to remove Intake Manifold for thhat. By the way why is that clutch there? noticingly this sound comes at end not start of self

If a motor mount is under higher load, then the stopper area highlighted in the figure bears the load by contact/pressing against each other.

[metalhead]

Nops that is why its strange. It cranks fine. Just when car is abot to start i hear geeeerrrrr noise from self. and it is not same of when you over crank

When you leave the key, the starter is no more applying torque so it's sound will be different than that of overrun cranking.
Probably your starter pinion is not returning smoothly and its dragging the starter along. Just a guess.

[malkana]

Can anyone guide on the following:
There is an unusual vibration in with 1KZ-FE diesel engine installed in Toyota Land Cruiser Prado. At times there is no vibration at all; however, the same starts without any specific conditions. Engine mounts are perfectly OK besides the diesel pump and injectors. Vehicle has neither an issue with starting nor gives smoke.
Please diagnose the issue and suggest the solution

[Xulfiqar]

Nops that is why its strange. It cranks fine. Just when car is abot to start i hear geeeerrrrr noise from self. and it is not same of when you over crank

the gheeeeen sound you are hearing is the motor of the starter spinning up too fast, This happens when the overunning clutch is not slipping as required when the engine fires.

The overrun clutch is there to prevent the engine from running the starter because the starter can only spin up the engine to about 250-300 rpm at max, the pinion also called bendix has a one way clutch built into it that slips in one direction and locks in the other. when it use - as soon as the engine fires and the starter is engaged the starter motor freewheels.

Yes - removing the starter is a nice painful exercise on that engine - make sure not to strip the threads on the super long bolt on top of it.

[capsat]

Magazine lane have plenty of headlight / tail light fabricators, you need to share your idea with them to get desired result.

Where can i get custom made headlights for Honda city 2015 in karachi do you know any one ?