Starting problems

[matt blowen]

Hi there i have a a3 1.8t agu, my car wont always fire up! Thougt crank sensor but whist cranking it reads 200+ on vcds. It wil bump start then run rough and very low idle until i flick the throttle. Sometimes it will fire of the key but like before it will run as if its on 3 cyl unti i give it some gas. Please help oh and no fault codes

 

[auditech12]

Does the car come right & idle normaly, drive normaly after the flick of throttle or always missfire, run rough?

Idea #1 Air Flow Meter.

Idea#2 Depending if your car runs fine or not after you flick the throttle.
Check Coils. You can loosen them but leave them connected, put a spark plug in one coil at a time, get a mate to crank the engine & check for spark. Obviously do this one coil at a time untill you either find a faulty coil or not.

(FYI: If it was a Crank Sensor your car wouldn't start full stop.)

If you get that far with no luck, let us know....

Cheers

 

[CMcKenzie]

Is it similar to what mine does?

https://www.facebook.com/photo.php?v=10151588987066347&set=vb.680716346&type=2&theater

Only does it if the car's been turned off and I've come back and started it again. It doesn't sound like it's misfiring, I have recently replaced the MAF with a genuine Bosch one.
It's not thrown any fault codes up.
-Callum.

 

[matt blowen]

yes a bit similar to your vid, auditech12 I have removed each coil pack and 1st 2nd 3rd spark plug covered in oil so ive ordered a rocker cover gasket hopefully that should sort it. gunna order new ngk platinum plugs as well

 

[matt blowen]

Ok ive changes rocker gasket and plugs, but still happens!! When car is running and i unplug the maf it cuts out, is this normal?

 

[bree9482]

Ok ive changes rocker gasket and plugs, but still happens!! When car is running and i unplug the maf it cuts out, is this normal?

feel for ya dude