Engine hesitation under light acceleration
Posted: Sun Aug 03, 2014 11:41 am
Scirocco 2.0 TSI GT - 2009 - 67k
ISSUE
I was experiencing hesitation/juddering with light acceleration in gears 2 & 3 - it was relatively minor but became irritating and would only get worse. There was no issue under heavy acceleration or driving on the motorway, just around town in stop/start traffic.
My initial diagnosis was ignition problems (misfiring) so I decided to change all coils and spark plugs (4 coil packs - £82) (4 NGK sparks - £10) but unfortunately this did not solve anything.
SOLUTION
Mobile mechanic came to visit and nothing flagged up on the diagnostic computer relating to the hesitation - ( a coolant temp sensor code was alerted, so that was replaced - £80)
He took the car away and discovered the air intake manifold was dirty - further investigation discovered one of the seals on the injectors was damaged.
Mechanic replaced all seals, cleaned the injectors and manifold and replaced the fuel filter = £140
The car runs perfectly now - thanks Ervin
ISSUE
I was experiencing hesitation/juddering with light acceleration in gears 2 & 3 - it was relatively minor but became irritating and would only get worse. There was no issue under heavy acceleration or driving on the motorway, just around town in stop/start traffic.
My initial diagnosis was ignition problems (misfiring) so I decided to change all coils and spark plugs (4 coil packs - £82) (4 NGK sparks - £10) but unfortunately this did not solve anything.
SOLUTION
Mobile mechanic came to visit and nothing flagged up on the diagnostic computer relating to the hesitation - ( a coolant temp sensor code was alerted, so that was replaced - £80)
He took the car away and discovered the air intake manifold was dirty - further investigation discovered one of the seals on the injectors was damaged.
Mechanic replaced all seals, cleaned the injectors and manifold and replaced the fuel filter = £140
The car runs perfectly now - thanks Ervin