An annoying tick?
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- Written by Nick Bailey
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Whats ticking ?
A very common mx5 problem is the development of a nasty ticking sound from the top end of the engine. Usually the first signs of this are when started from cold, but similarly the problem can be non-existent when cold, but appear after the engine has been given a good workout.
99% of the time the problem can be put down to the Hydraulic Lash Adjusters (HLA's) which are used in place of a more common solid lifter with shims (as found in the later mk2 cylinder heads).
The noise is not a real problem to the car, but can become a huge problem for the owner as it can make your pride and joy sound like an old wreck.
Cleaning HLA's
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- Written by Nick Bailey
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So here's a little guide to hydraulic lash adjuster cleaning.
Take 1 set of filthy hla's all placed in the same order they were removed from the head (be careful to keep them in the same order as they MUST go back in the correct location):