Hard to start after shut down bateen 10 t0 30 mins

My 2007 camry with 282k miles is hard to start after turning off engine between 10 to 30 mins. It has no problem to start first in the morning and after turning off engine 30 mins later.

I almost read post here everyday. I know 5w20 always does well maintenance for his vehicles. I have never changed transmission fluid,  break fluid. But this car is still working well.

History  of problem maintenance :

LR wear baring and out tie rod

4 spark plugs and 2 coil packs, O2 sensor 

front and back stabilizer links

alternator

This camry used to have engine oil consumption problem. Later Toyota provided warranty  and changed 2 pistons, now the engine runs very well.

I check online and ask one good mechanic, but no one can give exactly why I have hard to start problem. Most possibilitis are:

collant level sensor problem, collant temperature sensorproblem , crankshaft sensor problem, spark plugs problem, etc

But nobody can tell exactly problem is.

Anybody can give suggestions? 

Thanks.

 

 

 

 

 

 

 

 

所有跟帖： 

• starter -biglow- ♂ (0 bytes) () 11/14/2015 postreply 07:15:12

• I changed starter, but it has same problem -fuelinjector- ♂ (0 bytes) () 11/14/2015 postreply 07:37:32

• Isolate fuel related first and then check CPS/CKP if I were you -5W40- ♂ (0 bytes) () 11/14/2015 postreply 08:32:59

• what is cps/ckp -fuelinjector- ♂ (0 bytes) () 11/14/2015 postreply 09:18:56

• Crankshaft Position Sensor -5W40- ♂ (0 bytes) () 11/14/2015 postreply 11:15:47

• 謝5萬40兄 -fuelinjector- ♂ (0 bytes) () 11/14/2015 postreply 11:24:45

• +1,先查一查有沒有code -soccer88- ♂ (0 bytes) () 11/14/2015 postreply 19:40:02

• there is no code. check engine light is off. -fuelinjector- ♂ (0 bytes) () 11/15/2015 postreply 06:40:48

• 熱車難打，第一查一查pump，和 gas line -soccer88- ♂ (131 bytes) () 11/14/2015 postreply 10:35:01

• 謝足兄, those have been checked -fuelinjector- ♂ (0 bytes) () 11/14/2015 postreply 11:19:12

• Hope my experince can help you -方宜- ♂ (530 bytes) () 11/14/2015 postreply 14:03:54

• pushing gas pedal while starting did not help. I tried many time -fuelinjector- ♂ (0 bytes) () 11/15/2015 postreply 06:39:35

• 你的情況如果是injector leaking,熱車啟動越給油淹的越厲害，等的時間要更長。 -5W40- ♂ (53 bytes) () 11/15/2015 postreply 09:31:03

• 是根本不著還是穩不住。 -周老大- ♂ (0 bytes) () 11/15/2015 postreply 18:23:19