ericsbestshot

iTrader: (2)

I am having an issue that only occurred after my turbo install. Every time put my foot on the throttle i get this ticking sound. Never happens at idle or when cruising and only when in gear. I also think it intensifies dependent on how hard I mash the throttle.

What do ya'll think?
I'm kinda guessing drive train, but i sounds like its coming from the engine bay.

Miater

Knock.
DET.

Whats controlling the fuel and timing?

How long have you been boosting? Has this been happening the whole time?

18psi

iTrader: (76)

lololol he's guessing drivetrain

ericsbestshot

iTrader: (2)

I have an aem fic. I've been boosted for about a week. yeah, happening about the hole time. If it was knock or det. would i happen even with a so little increase in throttle.

Also does knock or detonation happen very rapidly? (every cycle of the engine?)

ericsbestshot

iTrader: (2)

Sorry, but it is a guess, only based on the fact that there is more load on the trans/driveshaft/diff. when adding throttle.

MartinezA92

iTrader: (4)

Stop boosting, right now. Holy ****.

You should start researching knock, what causes it, how to fix it, and what it sounds like.

Joe Perez

iTrader: (8)

Do you also have a wideband exhaust sensor? If so, what is it reading when this occurs?

Can you give us a broad overview of what your fuel and ignition adjustments look like?

What injectors are you using?

(etc)

Hard to know, since we have no logs to look at. When you said that "it intensifies dependent on how hard I mash the throttle," this kind of suggests that it occurs only when in boost.


Typically, yes. In the most severe case possible, it would happen once per ignition event. It can also occur intermittently, and often begins in just one cylinder. Lots of variables.

It's hard to describe it to someone who has never heard it. Some people liken it to shaking a jar full of ball bearings, others to tapping very rapidly on the block with a small hammer.

spaztikcamel

It could be something as simple as a pre turbo exhaust leak at the head where it only leaks once theres a little back pressure.

considering your freshly boosted assume its det and take it very easy.
did you retard the timing? running high octane fuel?

if the ticking happens in nuetral towards redline its more likely an exhaust leak.

ericsbestshot

iTrader: (2)

its set up to removed 1 degree of timing per 1 psi of boost

aaronc7

iTrader: (8)

how much boost you running? 93 octane?

ericsbestshot

iTrader: (2)

The most psi i've seen is 6psi and yes, running 93 octane.

damir130

Very long shot, but it could just be bigger injectors ticking away while they inject. Its audible even on stock engines and could be mistaken for something worse if its the first time you start listening for trouble.

Reverant

iTrader: (10)

Or an EBC valve for that matter...

fwman1

iTrader: (3)

I would find someone near you that has turbo Miata experience and have them look/ride your setup before I did any more boosting. In Floridia, you should be able to find someone as there are a zillion miatas there. Just look at the Miatapalooza that is coming up.

The folks in this thread trying to help you need complete information on your specific setup. Turbo/injectors/intercooling, etc..

sixshooter

iTrader: (12)

One degree per psi is wonderful and all, but what was your BASE timing set at? Is it ten degrees or something more?

Do you have an 02 clamp? If not, have you read the sticky DIY FAQ for putting a turbo on a Miata?

fwman1

iTrader: (3)

I did a bit of poking around. He is running stock injectors, and has a 2000. Using the FIC/6 for tuning. Guess we'll have to wait for him to provide more details. Probably at work now.

ericsbestshot

iTrader: (2)

Here is a log of what my car is doing. test=afr

sixshooter

iTrader: (12)

Did you read my question?

18psi

iTrader: (76)

Some people really are too stupid to be helped.

Its so sad really.

ericsbestshot

iTrader: (2)

Stock timing, or at least I never changed it.