1.6FSI Misfire

Djole Petrovic

Djole Petrovic

New Member
Hi all, i am from Serbia, and i am having some troubles with my car,
when motor is cold, puls strong without any problems, no missfires, doesn t lack power but,
whem car is half warm or fully warm, then start misfiring, blinking cel... but idling perfectly
Vag com faults is only Missfire on Cylinder Number 3 and from time to time temperature sensor(shorted circuit)
I changed plugs NGK from the dealer, then i changed coil pack instantly was better and after 2 or 3 days same thing again... cylinder number 3
Then i measured compresion, great about 12bar on all cylinders
Does coil wires or coil connectors can make similar problems? or some other stuff can make symptoms like this
 
It's an FSI so could be a few things, list of things to check

N316 actuator
In take Manifold flaps
Fuel injectors
High pressure fuel pump
Fuel pressure regulator
EGR valve and pipe
Throttle body

I'd put my money on it being carbon build up on the flaps stopping them opening and closing correctly. Not a massive job however whilst your in there you might as well swap or refurb your injectors do the nok sensor and the *pipe of death* get it all cleaned put it back together and it should be ok for a few years again ??
 
BoxyA2 said:
It's an FSI so could be a few things, list of things to check

N316 actuator
In take Manifold flaps
Fuel injectors
High pressure fuel pump
Fuel pressure regulator
EGR valve and pipe
Throttle body

I'd put my money on it being carbon build up on the flaps stopping them opening and closing correctly. Not a massive job however whilst your in there you might as well swap or refurb your injectors do the nok sensor and the *pipe of death* get it all cleaned put it back together and it should be ok for a few years again ??
Click to expand...

I checked intake manifold, its in mint condition without carbon buildup...
N316 Actuator is in fully operating condition without any problems moving up and down
EGR valve and pipe is good, same for fuel pressure regulator and fuel pump
Throttle body have been cleaned 1 year agoo
I suspect on fuel injectors or something about wires loom
because from day to day car works fine and the another day it much more missfires blinking cell etc...
it only happens when car is on full operating temperature...
 
Going on what your said above i would get the car checked for error codes. Your mechanic with the right machine ( Audi/vag diagnostics) can check which injector is playing up and how severe the problem is by reading off the misfire count. A badly misfiring injector will read high around 300 misfires a minute according to my mechanic who is an A2 specialist. Thats where i would start.
 
Vorsprung durch Technik said:
Going on what your said above i would get the car checked for error codes. Your mechanic with the right machine ( Audi/vag diagnostics) can check which injector is playing up and how severe the problem is by reading off the misfire count. A badly misfiring injector will read high around 300 misfires a minute according to my mechanic who is an A2 specialist. Thats where i would start.
Click to expand...


?? What Mark said ??
 
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