Corolla 1.6 long start when warm

ussi (ussi) 2021-05-07 02:59:11 +0500 #1

As the tittle suggests my car is giving this long starting problem when its hot
In the morning when i start it starts perfectly
This problem only occurs when the car is driven for a while then you stop it like for an hour or so and then it takes long cranks

I have replaced the following things
Spark plugs
Fuel filter
Fuel strainer
Injector seals changed

Now what should i do? Its really annoying when it takes long time in starting
What else could be the problem
Fuel pump?
Fuel pressure regulator?
Fuel lines?
Or ignition coils?

Kindly experts help me in this regard

Thanks!!!

hammad_hey (Hammad Ghaffar) 2021-05-07 04:39:20 +0500 #2

What model? If between 2017-2021 get fuel pump replaced from toyota under recall. Seems to be a fuel pump issue as it is a sign of failing fuel pump that car takes longer starting

Hassan1991 (Electrical Engineer ) 2021-05-07 05:02:57 +0500 #3

What is the condition of battery and stator?

ussi (ussi) 2021-05-07 05:03:06 +0500 #4

Its 2013 model
Its starts perfectly in the morning
The problem occurs when the car is warm and you start it after 30 minutes or so
Can it be the fuel pump?

aziz.rehan (Rehan Aziz) 2021-05-07 05:07:20 +0500 #5

Maybe it can be.but not completely sure as it's a sign of fuel pump

hammad_hey (Hammad Ghaffar) 2021-05-07 05:16:09 +0500 #6

What is the odometer reading

ussi (ussi) 2021-05-07 12:09:41 +0500 #7

Above 1 lac

ussi (ussi) 2021-05-07 12:10:20 +0500 #8

Starter and battery are in good nick

Hassan1991 (Electrical Engineer ) 2021-05-07 14:45:00 +0500 #9

Does the startor rotates in same speed?

ussi (ussi) 2021-05-07 23:41:05 +0500 #10

Yes same speed
It just doesn't come alive till few cranks

Hassan1991 (Electrical Engineer ) 2021-05-08 00:17:56 +0500 #11

Check these things
fuel pump amp draw.
Valve lashes.
Resistance of ignition coils.

ussi (ussi) 2021-05-08 02:15:49 +0500 #12

Well i just opened up the coils and found out that the boots had cracks
So pulled them off
Cleaned the springs tapped the boots and fitted back
Now will check time to time if the problem is still there
Will start the car every hour to observe
Btw are these boots available in the market?

Hassan1991 (Electrical Engineer ) 2021-05-08 02:25:13 +0500 #13

yes will be.
you should check valve lashes as well.

dms664 2021-05-08 03:41:34 +0500 #14

Yes boots are available. Try to get kabuli boots. I usually don't recommend scrapyard or kabuli stuff but since this is not a mechanical part hence it is a cost effective option with good quality.

ussi (ussi) 2021-05-09 11:32:41 +0500 #15

Okay bro
I have got some from khi
They are identical to origínal ones in shape
Let them arrive I'll share pics

ussi (ussi) 2021-05-09 11:35:09 +0500 #16

Bro do u mean tappets? Sorry I don't know about these valve lashes
Do they need to get cleaned or adjusted or changed?

Hassan1991 (Electrical Engineer ) 2021-05-09 14:13:29 +0500 #17

Yes tappets.
They have to be adjusted after certain km's according to owner manual.