How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Matt Your Own Question
Matt
Matt, Mechanical Engineer
Category: Audi
Satisfied Customers: 22250
Experience:  BEng hons Mech engineering, in auto industry 22 years
12772297
Type Your Audi Question Here...
Matt is online now

Audi A2 knocking valves, may lifters, cylinder head

Resolved Question:

Audi A2 knocking valves, may bi lifters, cylinder head overhauling, Where in London
Regards
Submitted: 1 month ago.
Category: Audi
Expert:  Matt replied 1 month ago.

Hello

if you've got a top-end rattle or regular ticking that increases in tempo with increasing rpm then yes I'd agree it could be a sticking valve lifter, as these use a small hydraulic piston to take up the valve clearances and what can happen is the small oil ways that feed the piston chamber can get clogged up

So the 1st course of action is to try an oil flush treatment complete with a new filter and fresh oil

as for an independent Audi specialist

try http://rac-london.co.uk/

Matt and other Audi Specialists are ready to help you