o2 Sensor and Spark Plugs Help

[Steve Welch]

I have performed a search and only found details on the 1.8t engine. I have a 99 A3 1.6 and have come across a few queries/problems.

1: Does my model have 2 x o2 sensors?
2: If it has two where is the pre cat lambda sensor located and how do i get to it?
3: How do i remove the HT leads to get to the spark plugs? I tried pulling and twisting but i didnt wnat to force them excessively.

Thanks.

 

[jay1601]

will be on the manifold or on the down pipe. can't be too hard to find. will need a 22mm open ended spanner or a 22mm lambda socket.

just pull them out. if they are the same when i had a 1.6