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Author
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Topic: What's up with this?
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wythors
Gearhead Posts: 2205
From: La Conner WA HOW 'BOUT THOSE MARINERS?!?!?
Registered: Sep 2000
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posted 05-13-2001 05:55 PM
   
Yesterday, after 2 1/2 years of ownership, I finally got around to advancing my timing. I didn't want to get too radical, so I bumped it from 4* to 10*. I now have a little bit of a burble on decelleration. It didn't do this before. Why? Can I make it go away?
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Velocity0
Journeyman Posts: 86
From: Burnaby, BC Canada
Registered: Apr 2001
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posted 05-13-2001 09:19 PM
What do you mean by "Burble"?
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wythors
Gearhead Posts: 2205
From: La Conner WA HOW 'BOUT THOSE MARINERS?!?!?
Registered: Sep 2000
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posted 05-13-2001 10:13 PM
quote:
Originally posted by Velocity0:
What do you mean by "Burble"?
"Ba-dop-dop-dop-dop" Sort of a series of little backfires. Nothing major. It's not as bad as Ian's with an off-road pipe, but still annoying.
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wythors
Gearhead Posts: 2205
From: La Conner WA HOW 'BOUT THOSE MARINERS?!?!?
Registered: Sep 2000
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posted 05-14-2001 10:34 AM
Never mind. I had it out on the highway for the first time this morning and it "pings" now on 92 octane. It's coming back down when I get home. 
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Gearhead
Gearhead Posts: 960
From: Look up... waaaaay up!! No, no, no... not that far.
Registered: Mar 2000
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posted 05-14-2001 12:54 PM
Yours was set at 4*??? Wow, that's low, even considering the varience that they have from the factory. They are supposed to be set at 9* on the assembly line, though mine was down at about 7* in my 89 GT. I advanced mine to 14* and had no pinging at all with 93 octane. I have my 79 set at 12* right now with no problems. Maybe the outer portion of your balancer has shifted a bit? Sounds very strange that it would ping at only 10*.Hey, I like my burble on decel!!   ------------------
Cheers,
Ian
M&M Member #395
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'79 Mustang Indy 500 Pace Car
Ian's Pace Car Website
Indy Pace Car Registry of Mustangs Official Website "If you get to thinking you are someone of some importance and influence, just try ordering another persons dog around." - Author Unknown
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wythors
Gearhead Posts: 2205
From: La Conner WA HOW 'BOUT THOSE MARINERS?!?!?
Registered: Sep 2000
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posted 05-15-2001 11:47 PM
I dropped it back 2 notches. No more "burble". No more ping. Life is once again good.
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Stewart
Moderator Posts: 6088
From: Monterey, CA Mustangsandmore Member #437
Registered: Apr 2000
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posted 05-16-2001 03:14 AM
I just had my GT smogged. Got the results back and noticed that they show the timing degree on the printout! I never noticed that before. Mine is set at 10 degrees BTDC, and I have never had any problems with burbleing or pinging, and I run 87 octane regular through mine! I'm happy!! Stewart
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