Engine noise help

blk na6 · Postby **blk na6** » Fri Jul 27, 2012 1:26 am

Im just seeking some guidance with my 93 aussie na6,

It sounds like its from the engine bay and it's like a ticking noise the more I rev the quicker the ticks get, it's there on idle as well and it's also there whiles cold and warm, if anyone has had experience or has a good guess on whats up I'd be great full

93_Clubman · Postby **93_Clubman** » Fri Jul 27, 2012 10:54 am

Being an NA6 (or NA8) it could be HLA noise, but usually it disipates after a while & then returns.

Many forumites have had excellent results using Nulon Lifter Free. Sometimes an oil change or different oil grade can also help. Could also be something other than HLA noise, but not easy to diagnose remotely with limited info.

HLA noise: search.php?keywords=hla+noise&terms=all&author=&sc=1&sf=all&sk=t&sd=d&sr=posts&st=0&ch=300&t=0&submit=Search

Apu · Postby **Apu** » Fri Jul 27, 2012 11:15 am

OP says noise is present when engine is cold and hot.

Is it really a ticking noise, or a tapping noise?

93_Clubman · Postby **93_Clubman** » Fri Jul 27, 2012 11:44 am

Apu wrote:OP says noise is present when engine is cold and hot.

blk na6 wrote:...and it's also there while cold and warm...

I've heard HLA noise in NA6 or NA8 when cold, warm or hot. With a bit of continued drving it sometimes stops making the noise, to usually return another day.

Postby **NitroDann** » Fri Jul 27, 2012 12:06 pm

Sounds like the Hydraulic Lifter Assemblies.

Nothing to stress about.

Replace them rather than use chemicals and oils to try to mask them. They can be had for 120 odd for the set.

Dann

blk na6 · Postby **blk na6** » Fri Jul 27, 2012 2:01 pm

Thank you all for your advice!

Yes it's more of a ticking noise like 60minutes but a bit more tinnie. Kinda embarrassing driving around and your car sounds like its got a time bomb in it.

Thank god coming from Nissan world constant engine noise means goodbye wallet.

I will do an oil and oil filter change anyway for peace of mind, and I'll probably head down to Mazda and buy some replacements. if i end up replacing them myself I'll do a write up if there isn't one already.

93_Clubman · Postby **93_Clubman** » Fri Jul 27, 2012 2:12 pm

In case you're tempted to go for the middle option of cleaning HLAs as per:
http://www.miata.net/garage/hla/cleaning.html
Don't bother, as it's time consuming & doesn't necessarily give the result hoped for:
viewtopic.php?f=29&t=41116&p=529002&hilit=hla+cleaning#p529002

blk na6 · Postby **blk na6** » Fri Jul 27, 2012 2:22 pm

Thanks mate I might give it a go now after I get my headlights flush, gave it a quick read looks simple thanks heaps.

PS sorry didn't use search properly think I saw a thread on HLA but assumed worse as I always get HLA noise from the start of my day to the end. whereas most get it on cold mornings.