GLi 2010 - Long self starting

[bkdurrani]

ok thank you.

[haseeb.basharat]

Don't change the fuel pump.
It will cost you a fortune.
Change a fuel filter in the fuel pump+ a filteration gauze with it. It will cost you around 1500rs.and a good mechanic will charge you around 200-300rs. for it.
Toyota motors will ask you to change the fuel assembly after every 80,000km, but this is a cheat for the fuel pump.
Ps: my 2nzfe is running on genuine oem fuel assembly after 200,000km. Just have it changed after every 50,000km.
Enjoy

[Xulfiqar]

@Xulfiqar. I went to Toyota workshop last saturday to seek the answer of your first question. They did a number of experiments. They started the car for a minute and then switched it off for an hour or so. Then again they started and the car started in a reasonable time on first self but not half self. Today they checked the coils while the engine was in idle running condition. They took out coils one by one and touched the coils with the engine outer head to check for any spark leakage. Leakage found in all coils. Now, I am not sure and even they are not sure if we replace the old coils with the new ones, what will be the outcome? Fingers crossed!

Is this what they really did? or are you trying to really oversimplify it? - you write they started car and then left for an hour then restarted it - Dont they own a fuel pressure tester?

Testing an ignition coil in this setup is not a leak check - its an amp pull check with a good scope setup, You sure you visited a toyota showroom?

[Xulfiqar]

But how would engine start then I mean over lapping cam won't let compression built up in cylinder

the actuator can snap back to zero timing when the engine is cranked as there is no oil pressure to hold it. If the locking pin in the actuator has galled the cover then it can hang and not return back to zero timing.. problems start.

Usually when the engine is shut off - its idling at 750 rpm at no load, the actuator should be at zero point, but if its sticky the timing can be slightly out of sync, If it goes really out of sync the ECU will pop the TDC error code.

[bkdurrani]

Kindly simplify the solution

[bkdurrani]

If Toyota is asking for changing the assembly after 80k , then why should we change it after 50k? From where can I get the complete assembly in Rs.1500?

[bkdurrani]

They do have the fuel pressure tester with whom they tested the pressure which turned out to 3.5 which they said is ok.

[saboor73]

@xulfiqar. I went to Toyota workshop last saturday to seek the answer of your first question. They did a number of experiments. They started the car for a minute and then switched it off for an hour or so. Then again they started and the car started in a reasonable time on first self but not half self. Today they checked the coils while the engine was in idle running condition. They took out coils one by one and touched the coils with the engine outer head to check for any spark leakage. Leakage found in all coils. Now, I am not sure and even they are not sure if we replace the old coils with the new ones, what will be the outcome? Fingers crossed!

From what point coils are leaking ? Plug boot?

[bkdurrani]

@saboor73. Near the tip of the coils or you may say the neck of the coils.

[Xulfiqar]

They do have the fuel pressure tester with whom they tested the pressure which turned out to 3.5 which they said is ok.

yes - 3.5 bar is acceptable pressure for your engine, how long does it hold?

[bkdurrani]

Pressure release valve was checked with a gap of 2 hours to check how much pressure drops. After 2 hours it drop to 2.1 ---- They said that pressure was acceptable for car to start but again it too time to start. Today I got my fuel filter assembly tested by replacing it with another one which was believed to be in working condition; but again same result. Moreover. tappets adjustment was also verified for any faults but that was perfect. Now two final checks to go; fuel injectors and ECU.

[Xulfiqar]

Pressure release valve was checked with a gap of 2 hours to check how much pressure drops. After 2 hours it drop to 2.1 ---- They said that pressure was acceptable for car to start but again it too time to start. Today I got my fuel filter assembly tested by replacing it with another one which was believed to be in working condition; but again same result. Moreover. tappets adjustment was also verified for any faults but that was perfect. Now two final checks to go; fuel injectors and ECU.

I have dealt with such issues in corollas here in USA and almost all of them had their intake manifold gasket leaking, this leads to the MAF reading low. ideally you should be reading 1 gram/sec for every litre of engine size. Test its response time too - upon snapping open the throttle you should be seeing immediate spike in air volume at the MAF.

[bkdurrani]

How much fuel pressure is acceptable to be dropped once the car has been switched off?

[dms664]

Don't change the fuel pump.
It will cost you a fortune.
Change a fuel filter in the fuel pump+ a filteration gauze with it. It will cost you around 1500rs.and a good mechanic will charge you around 200-300rs. for it.
Toyota motors will ask you to change the fuel assembly after every 80,000km, but this is a cheat for the fuel pump.
Ps: my 2nzfe is running on genuine oem fuel assembly after 200,000km. Just have it changed after every 50,000km.
Enjoy

When u had ur first gear oil change in ur corolla? I mean odo

Sent from my GT-I9500 using Tapatalk

[Xulfiqar]

How much fuel pressure is acceptable to be dropped once the car has been switched off?

it should hold atleast 2.8 bar for 30 minutes.

[bkdurrani]

I see... But what is the minimum fuel pressure required to start the engine after a considerable time has elapsed?

[pwuser151754591455]

Hello bro ? Do you remember how it got solved ? As I am also facing same issue with altis 2013. I have changed fuel pump to but no help. On first self it takes ling but then it starts immediately, after 30 mins it agains take long

[pwuser151754591455]

@bkdurrani bro can you help telling how you got it fixed ? I am also facing same issue

[pwuser158913575038]

Did u check timing?

[muhammadmuneeb12321]

Facing the same issue with Gli 2012.