self start problem

I am facing a peculiar problem in my punto emotion diesel, self start is not working after 10 to 15 km travel. self start will start to work after half an hour or so. once temperature needle comes down from half mark. No error signal is appearing in the dash board. I checked battery and it is OK then changed earth wire still problem exists. there is no problem in self start when engine is cool. Please suggest any solution

 

@KAMPARATH
I faced similar problem and I had to change the starter.
However, I am not too sure if that is the root cause. Please check with your mechanic at FNG/FASS.

 

I could not follow what you meant by self start? How do you start the car if it is stopped at a traffic signal after driving for 10-15 kms? (No pun intended).

 

The reason I ask is to enable better diagnosis. Apart from the starter sticking in hot condition, it could also be due to an engine timing or any sensors related to engine timing. Would be better to take the vehicle for a diagnostic check.

 

When I faced this problem, I took my car to FASS. They did not mention anything of sensor/timing issues.
They asked me to change the starter. I did. Now, after about 1.5 years, I am facing starting problem again. Only difference is that, car starts in 2nd or 3rd crank. Or may be 4th if it faced to heavy rains.

 

The starter motor are usually tested for few million operations (One from a batch in production is used for endurance tests). Repeated starting problem could indicate an issue with cam or crankshaft position sensor. Please see this link ,read the Function section in the article "The first sign of crankshaft sensor failure, usually, is the refusal of the engine to start when hot but will start again once the engine has cooled.". You may find one for your car here.

 

Informative. Thank you.
I would suspect crankshaft sensor failure. However, to ascertain I will take it to FASS. Not sure whether KHT or PPS would be competent to do it in Bangalore.
Does any error pop up in diagnostics?

 

Cannot be sure of the error in diagnostics. Few read in other forums suggest, there could be an synchronization error in the cam and crank shaft position in the ECU. May be need advance level of debug from the OBD. There should be some method of resistance measurements, after removing the sensor, to check if the sensor is faulty, using a multi meter.

OT: Cannot be sure if KHT or PPS would be competent enough. Which leads me to believe, we should be able to rent out garage with tools in Bangalore to hire and service by self.

 

@naruf1 : mine seems to be an issue of earthing cable/ground cable nearing its end of life.
See this pic. Only a few strands left. I replaced the same at JK automobiles and today morning it started at first crank. I hope this fixes the issue for mine.

The car is about to turn 7 in Jan, 2020 and the current ODO is 1.61L



I did get the car scanned with OBD tool and it did not show errors for cam or crankshaft position sensors.

 

Great that is good to know. Thanks for sharing. Appreciate the effort at JK automobile, looking at this, I may consider taking my drive to JK for the next service. Cheers.