Engine knock/ping - just moved to AZ

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Sep 17, 2003 | 09:58 PM

DSchaefe

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Pro

Joined: Nov 2001

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From: Cave Creek AZ

Engine knock/ping - just moved to AZ

I just moved from the midwest (93 octane premium pump gas) to Phoenix where all premium is 91 octane... the car runs fine but knocks/pings at when accelerating... it never did this in Illinois... could it just be the fuel? Is there any way to address this?

Thanks

Sep 17, 2003 | 10:44 PM

Bill Reid

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From: Chandler AZ

Re: Engine knock/ping - just moved to AZ (DSchaefe)

Dave,
... in short...

Your sweetheart was sipping the best Napa Merlot while back in Illinois... now she is forcing down Franzia box wine :yesnod: :jester Also, not only is the octane rating lower we run 10% ethanol... truely crappy gas.

Stop by sometime... we'll throw her up on the rollers (with air/fuel) and determine how bad the problem is... for a very nominal fee :D

:cheers:

Sep 17, 2003 | 11:02 PM

AZGASSER

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Joined: Aug 2002

Posts: 1,538

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From: Central MO

Re: Engine knock/ping - just moved to AZ (DSchaefe)

Would octane boosters help this situation? I feel for you man! Same down here in Tucson. :mad

Sep 17, 2003 | 11:30 PM

66ImpalaLT1

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Joined: Apr 2001

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From: Austin TX

Re: Engine knock/ping - just moved to AZ (AZGASSER)

The 12oz bottles of octane boost are simply not enough to make a difference. You can use Toulene or Xylene. I'd probably just tune the spark map a little different.

I moved from the midwest last fall, but my car runs fine on 91 octane because of the altitude here. I do get a little pinging driving home from Phoenix.

Eric

Sep 17, 2003 | 11:49 PM

intel55

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Joined: Jan 2001

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From: God's Replica

Re: Engine knock/ping - just moved to AZ (Bill Reid)

Quote:

:yesnod: :yesnod: :yesnod:
go there you won't be disappointed. :smash:

one time I took mine up Mt. Lemon on a unusually hot day up ther and I pinged like a ****.

Sep 18, 2003 | 12:15 AM

DSchaefe

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From: Cave Creek AZ

Re: Engine knock/ping - just moved to AZ (Bill Reid)

Thanks for the info. I'll be by just as soon as I can get over there. I have a 99 FRC and a 96 LT-4, I am guessing both would benefit...

Dave

Sep 18, 2003 | 02:02 AM

BHP

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Joined: Jul 2002

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From: Nevada and Florida

Re: Engine knock/ping - just moved to AZ (DSchaefe)

We have this gas in Vegas. :rolleyes: To fix I ended-up going to a Be-Cool radiator to keep temps below 200 (115* degree days) and colder plugs. You could also use LS1 edit and rich-up fuel or cut timing.

Sep 18, 2003 | 08:11 AM

Norris

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From: Sierra Vista, Arizona

Re: Engine knock/ping - just moved to AZ (DSchaefe)

I live in Sierra Vista and my vette runs great with the 91 octane. No pinging from day one. If your vette's computer has had time to "relearn/adjust" to the lower octane and the pinging is still there, you have a problem. The folks at Extreme can diagnose the problem and take care of it. Welcome to Arizona!