Diesel engine health

[Xulfiqar]

the tappets on the toyota 2C that was installed by Indus Motors has solid tappets, check the clearances for correct measurement then report back. How are you isolating its the tappets that are noisy?

[hello123]

Which is best shop in rwp/isb to get ones 2d checked like tappets nozzles etc

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[junaid.qtr]

xulfuqar bhai i have a question... i am not very experienced with cars so need your advice... my dad is planing to buy a land cruiser which is 1988 model but refurbrished recently to a 2000 model....it is a diesel engine 3000cc.....

my question is what do u think is better diesel or petrol engine for this sort of jeep??
does diesel give good millage and is it easy to maintain...

plz need ur opinion as u are quite an expert at this

Regards
junaid

[sdmaxi]

the tappets on the toyota 2C that was installed by Indus Motors has solid tappets, check the clearances for correct measurement then report back. How are you isolating its the tappets that are noisy?

Sound is coming from the tappets cover top side of the engine. Today I will visit my Mechenic or Toyota service center and then will report back
Thanks for the reply !!!!

[akifjanjua]

Yes bro.. replaced head with complete engine rebuilt

Did you rebuilt head too?

[rajaatta]

AoA @xulfiqar bhai,

I have recently rebuild a TD27 NA engine of a nissan D22. All is well except an annoying tick tick noise from top of tappet cover at idle and slight off idle positions. During driving its okay.

What we have checked so far:

1. Valve train.. from cam, lifters, rods, tappets, all checked.. all good.
2. Oil supply is good on tappets.
3. Head & internals rechecked

Now im going to focus on fuel system. A few things apparently wrong

1. One of the injector pipe seems different.. a bit thicker in size.. and the pulse in that injector is also feeble. Can this cause a major noise issue?
2. During the 1st ride.. I did notice a nozzle getting stuck.. a few revs and it cleared.. Possible incorrectly calibrated nozzles or delivery valves?

New nozzles were installed and pump was redone because it had leaky delivery valves. Starts up fine.. no smoke.. drives well.

On first start there is no tick tick.. rev it to at least 1000rpm and back to idle.. tick tick begins.. keep it idling upto 5 mins.. tick tick fades a bit but its still there.. I am planning to take it to another Pump wala as i have doubts on the earlier work done.

What can cause the tick tick at idle? Need your thoughts on this issue

is your problem resolved I had faced the same issue in my TD42 when i rebuilt it the culprit was incorrect Valve clearance it is common in nissan diesel's after rebuilt that this tick tick jump's in few other friend's also faced with their Diesel nissans

[rajaatta]

@xulfiqar sir how to resolve the sulphur content problem in diesel as it is harmfull in the C chamber?

[Xulfiqar]

Sound is coming from the tappets cover top side of the engine. Today I will visit my Mechenic or Toyota service center and then will report back
Thanks for the reply !!!!

It is extremely unlikely you can hear the tappet noise in a diesel engine specially at idle speed as the injectors are also clacking away and produce a ticking sound too. The other item that can cause such noise is the vacuum pump in the valve cover.

[YamahaYB100]

Yes bro.. replaced head with complete engine rebuilt

What had you done with your engine head
I'm using it since 2009 and to me it's the robust engine I have ever seen

[YamahaYB100]

It is extremely unlikely you can hear the tappet noise in a diesel engine specially at idle speed as the injectors are also clacking away and produce a ticking sound too. The other item that can cause such noise is the vacuum pump in the valve cover.

@xulfiqar
If you know that I too had asked you about this clacking (tic tic) sound.
Last year when I replace piston rings. nozzle redo and pump calibration it's gone
To me it is nozzle sound

[Xulfiqar]

Yes, the nozzles in any IDI diesel will click quite sharp at idle speed.

[YamahaYB100]

Please sir elaborate regarding full load adjustment screw and how to adjust fuel on diesel engine

[Xulfiqar]

Please sir elaborate regarding full load adjustment screw and how to adjust fuel on diesel engine

Dont mess with it, its output can only be "seen" when the pump is on a test bench. If you up the fuelling without any measure you run risk of

1 - damage from high EGT
2 - runaway engine.

you never ever ever want to experience a runaway engine no matter how much of Bruce lee and Arnold Schwarznigger hybrid you assume you are.

[Salman922]

@xulfiqar: with reference to our PM discussion, now ur inbox is full.

Calibration: Ask around or call up proper repair shops ? Cummins PK may assist you.

sir today i have got my pump and automizers uninstalled from the engine and will give them to Cummins PK tomorrow.

Many people are saying that i should not go for calibration as it will make pump very powerful and engine is weak so it will kill engine even further, now i don't know what to do ? confused !!

i also tried to move the part by hand which CSD moves and it was damn hard, had to put too much force, i don't think CSD would be moving it before as it might be rusty itself, would cummins clear it ? any further advice on this calibration ?

Sounds like bad synchronizer rings, this is also caused by a bad clutch cylinder. Replace the brake fluid in the clutch and retest. If all is good and the clutch plate is good and the car fails the reverse idle test (rev engine to 2000 rpm, let go, press clutch ? engage reverse gear, if you hear it crunch into gear ? you need a clutch job ? make sure to replace the pilot bearing too.

-as far as i remember there is crunch sound, in fact if i engage 1st gear with 1300 rpm then too i hear crunch sound. will check it properly tomorrow.Sounds like a bad clutch assembly or bad clutch slave.

sir today multiple times i tried this reverse idle test, my car passed it every time, there was no crunch sound, although if car is moving little bit and i try to engage first gear then it produces crunch sound.

please reply now sir as i'll leave tomorrow early morning to deliver the pump to cummins.

[Xulfiqar]

@Xulfiqar: with reference to our PM discussion, now ur inbox is full.

sir today i have got my pump and automizers uninstalled from the engine and will give them to Cummins PK tomorrow.

Many people are saying that i should not go for calibration as it will make pump very powerful and engine is weak so it will kill engine even further, now i don't know what to do ? confused !!

i also tried to move the part by hand which CSD moves and it was damn hard, had to put too much force, i don't think CSD would be moving it before as it might be rusty itself, would cummins clear it ? any further advice on this calibration ?

sir today multiple times i tried this reverse idle test, my car passed it every time, there was no crunch sound, although if car is moving little bit and i try to engage first gear then it produces crunch sound.

please reply now sir as i'll leave tomorrow early morning to deliver the pump to cummins.

good pump will kill an engine? thats news to me.. So technically we should be using fuel mixed with twigs and bugs in old engines?

your clutch problem more sounds like a completely trashed synchronizer cone for the 1st gear - you need to rebuild the gear, Call a toyota spares shop and ask them about the "cone garari" "gear ka karha" (gear's bracelet), for your transmission. You can also look for such in the yard from broken down gearboxes - make sure to measure the gap between the gear and synchro ring with feeler gauges after making sure the synchro is the right one.

[syncview]

good pump will kill an engine? thats news to me.. So technically we should be using fuel mixed with twigs and bugs in old engines?

I always wanted to ask about this

I've seen many people and even the diesel labs say that if the engine is weak, pump/nozzle calibration will only make it worse.. some people I know have experienced such as well..
now I know that doesn't happen due to the pump/nozzle calibration.. rather it may be due to miscalibration.. what could it be?

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[haroon47]

@xulfiqar. Sir i own a diesel car with the odo 295000km. The issue is that it doesnt start on first self at morning. I have to give few try to rev the engine. Secondly when it gets started it gives alots of blue smoke. Mileage of the car is satisfying. Does 14km/l in city. So what should be the cause. Actually i lack knowledge of diesel engines. So ur help is needed

[akifjanjua]

is your problem resolved I had faced the same issue in my TD42 when i rebuilt it the culprit was incorrect Valve clearance it is common in nissan diesel's after rebuilt that this tick tick jump's in few other friend's also faced with their Diesel nissans

We hav check the valve train completely.. its a nozzle cackle.. and with more km on the odo the noise is changing... I still need to put in new lines and proper clamps.. only then can we diagnose any further

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[akifjanjua]

What had you done with your engine head
I'm using it since 2009 and to me it's the robust engine I have ever seen

it was massively overheated.. head crack

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[Salman922]

good pump will kill an engine? thats news to me.. So technically we should be using fuel mixed with twigs and bugs in old engines?

your clutch problem more sounds like a completely trashed synchronizer cone for the 1st gear - you need to rebuild the gear, Call a toyota spares shop and ask them about the "cone garari" "gear ka karha" (gear's bracelet), for your transmission. You can also look for such in the yard from broken down gearboxes - make sure to measure the gap between the gear and synchro ring with feeler gauges after making sure the synchro is the right one.

same thing was confusing me, any ways i have given the pump to Cummins PK today morning, will get it in the evening or tomorrow, now i don't know from where to get it installed and timed with dial gauge.

regarding gear maybe u r right, my gear also goes little more to the left, like more then required to engage the 1st or 2nd gear (also works the normal way) and while engaged in 1st i can still move the gear to the left side but not freely.