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DIFFERENT ENGINE NOTE???
Posted: Mon Jun 30, 2014 9:11 pm
by OR31LLY
I just put my NA6 in for a service and a tune up as it was running like dog balls.
I get it back, and the whole car under accelleration sounds much more growly instead of smooth and linear...
Is this a possible advance in timing?
Can a simple "tune" do this???
The exhaust note has changed to. I had a fairly raspy exhaust at a certain rpm, and now it hardly does that.
Can anyone explain?
Cheers
Re: DIFFERENT ENGINE NOTE???
Posted: Mon Jun 30, 2014 9:32 pm
by aka_juffa
New air filter?
Engine is breathing better and sounds more forty.
J
Re: DIFFERENT ENGINE NOTE???
Posted: Mon Jun 30, 2014 10:29 pm
by marty085
Rorty?
Re: DIFFERENT ENGINE NOTE???
Posted: Mon Jun 30, 2014 10:37 pm
by emily_mx5
It's not a carby... No such thing as a "tune"
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Re: DIFFERENT ENGINE NOTE???
Posted: Mon Jun 30, 2014 11:04 pm
by sailaholic
Not true Emily. Timing and plug gap are part of a "tune up service" and still apply here.
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Re: DIFFERENT ENGINE NOTE???
Posted: Tue Jul 01, 2014 9:41 am
by speed
Just changing a coolant sensor changed the note of my car.
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Re: DIFFERENT ENGINE NOTE???
Posted: Tue Jul 01, 2014 10:52 am
by 93_Clubman
Assuming still standard, have they refitted the airfilter element &/or the airbox snorkel up to the rear pside corner of the engine bay? Or have they possibly removed an old cloth that had been sucked into the airbox snorkel (that's what I found in the airbox snorkel of my old NA6 just after I bought it).
Re: DIFFERENT ENGINE NOTE???
Posted: Tue Jul 01, 2014 11:48 am
by project.r.racing
running like dogs balls. now running like it should. so the air-fuel ratio has changed. hence diffence in exhaust sound due to combustion being different.
Re: DIFFERENT ENGINE NOTE???
Posted: Tue Jul 01, 2014 12:36 pm
by chrisearl88
Also could have replaced a gasket or fixed a small exhaust leak which would change the sound.
Re: DIFFERENT ENGINE NOTE???
Posted: Tue Jul 01, 2014 1:03 pm
by lizard
speed wrote:Just changing a coolant sensor changed the note of my car.
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Now I have heard everything
Re: DIFFERENT ENGINE NOTE???
Posted: Tue Jul 01, 2014 1:54 pm
by CapitalF
Im with chrisearl88 - most likely a physical change related to exhaust. You may also want to check for exhaust / manifold cracks that have suddenly become more pronounced due to tune.
Re: DIFFERENT ENGINE NOTE???
Posted: Tue Jul 01, 2014 4:07 pm
by zero00
emily_mx5 wrote:It's not a carby... No such thing as a "tune"
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RUBBISH!!!
Re: DIFFERENT ENGINE NOTE???
Posted: Tue Jul 01, 2014 6:09 pm
by speed
lizard wrote:speed wrote:Just changing a coolant sensor changed the note of my car.
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Now I have heard everything
Ke? You don't believe me. Faulty sensor ran rich, new sensor not so rich. Changed sound. What's not to believe?!
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Re: DIFFERENT ENGINE NOTE???
Posted: Tue Jul 01, 2014 6:31 pm
by lizard
speed wrote:lizard wrote:speed wrote:Just changing a coolant sensor changed the note of my car.
Sent from my iPhone using Tapatalk
Now I have heard everything
Ke? You don't believe me. Faulty sensor ran rich, new sensor not so rich. Changed sound. What's not to believe?!
Sent from my iPhone using Tapatalk
Re: DIFFERENT ENGINE NOTE???
Posted: Tue Jul 01, 2014 7:03 pm
by OR31LLY
Wow didnt expect such a vast response!
I havnt got the invoice off the mech yet, as I picked it up after hours...
I most likely would assume that a air filter was replaced, as it has definately changed tone from the front section of the car.
So there wouldnt be any form of timing change from cam gears ect????