what effect on engine if the timming chain is bad
If it has not broken yet just replace it with new parts. If it has not broken yet you o.k.
The 2.0L engine has a timing belt. If the belt goes bad the engine will not start. If it slipped it would throw the timing off and cause back-firing. Also IF this is a interference engine then you have the possibility of having bent valves. I would have to investigate further to know if this is an interference engine.
it is a 21st Century Audi- who knows?! you will need an Audi specialist- and a hefty bank account-
Looking for a Used A4 in your area?
CarGurus has 8,608 nationwide A4 listings starting at $1,499.
Search Audi A4 Questions
Audi A4 Experts
Related Models For Sale
Used Cars For Sale