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Late starting after piston change

Tiny
SINGHADARSHH
  • MEMBER
  • 2011 VOLKSWAGEN POLO
  • 1.2L
  • 3 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 70,000 MILES
I have done a piston replacement job and it is starting very late after ten to fifteen cranks. After start engine is shaking a little bit.

Please help me.
Monday, October 30th, 2017 AT 12:42 AM

5 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Has the timing been installed correctly?
Have you tested the engine compression?
Is the MIL indicating and have you checked for trouble codes?
Were spark plugs checked/replaced?
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Monday, October 30th, 2017 AT 8:19 PM
Tiny
SINGHADARSHH
  • MEMBER
  • 3 POSTS
Yes, timing checked it properly installed. Engine compression is good in all 3 cylinders.

It is showing an error code with crank seep sensor. I have replaced 2 times but still same code and delayed start.
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Wednesday, November 1st, 2017 AT 4:25 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
If it is a crank sensor fault code, possible causes are
1. The timing is not correct.
2. Sensor is bad.
3. Sensor wiring has a break somewhere or the connection is bad. Check for a poor ground too.
4. Crank sensor rotor is damaged or gap between sensor and rotor out of specs.
5. The Engine Control unit wiring is not connected well or is faulty
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Wednesday, November 1st, 2017 AT 6:48 AM
Tiny
SINGHADARSHH
  • MEMBER
  • 3 POSTS
Thank you. I will check all this and let you know
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Thursday, November 2nd, 2017 AT 4:14 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,904 POSTS
Please let us know what you find. I'm interested to see what it is.

Cheers, Ken
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Thursday, November 2nd, 2017 AT 6:46 PM

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