Volkswagen Polo emissions warning light
Variant: 1.2 E
Model Year: 2005
Categories:
Electrics, ECU, Warnings & Lights
orange emissions warning light on permanently,slight misfire
The computerised diagnostic test came back with the following results –
16687 – misfire detected cylinder 3
The coil packs changed, which had no positive result, a set of spark plugs was tried after, again, to no effect, so a compression test was carried out.
Compression test results –
Cylinder 1 – 14 bar
Cylinder 2 – 10 bar
Cylinder 3 – 9 bar
What could be wrong? Car only done 25K and serviced by VW.
The computerised diagnostic test came back with the following results –
16687 – misfire detected cylinder 3
The coil packs changed, which had no positive result, a set of spark plugs was tried after, again, to no effect, so a compression test was carried out.
Compression test results –
Cylinder 1 – 14 bar
Cylinder 2 – 10 bar
Cylinder 3 – 9 bar
What could be wrong? Car only done 25K and serviced by VW.
Posted: Dec 18, 2009 (15 years ago)
Sticking hydraulic tappet ?
Posted Dec 18, 2009 (15 years ago)
possible injector fault in cyl 3. or wiring to coil 3 from ecu. i suspect lower compression in cyl 3 probably due to overfueling in that cylinder. is it using water??
Posted Dec 18, 2009 (15 years ago)
VW dealership has taken of the cylinder head and advised that exhaust valve on cylinder 3 was sticking and have quoted £1200 pound to fix. What could have caused this? Only done 25K and serviced regularly.
Posted Dec 23, 2009 (14 years ago)
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