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Location:
Sydney
Registered:
November 2002
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 Pinging
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Tue, 12 November 2002 16:57
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Hi all,
Just advanced the timing on the 7AFE, and I'm wondering what exactly does pinging sound like?? It was making a quiet rattling noise somewhere in the engine bay under mild acceleration sometimes, until I retarded the timing a bit (still advanced a few degrees from stock) and gave it some 98 RON. Was that rattling noise pinging? And if it is do you think I did any major damage? I drove it about 10 km's with a bit of that noise.
Cheers!
-Paul
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Location:
Canberra, ACT
Registered:
May 2002
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Re: Pinging
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Tue, 12 November 2002 22:13
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I think thats called detonation, but I don't know if they are actually the same thing..
-Andrew
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Location:
Perth, WA
Registered:
October 2002
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: Pinging
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Tue, 12 November 2002 23:24
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Sounds like when you shake a blown light globe, only louder.
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Location:
Montrose, VIC
Registered:
May 2002
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Re: Pinging
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Tue, 12 November 2002 23:49
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...and when you do a really good job of it, it sounds like a busted piston... hang on, it is a busted piston 
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Location:
Sydney
Registered:
November 2002
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Re: Pinging
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Wed, 13 November 2002 01:13
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we have a winner - gianttomato..sounds just like that i think!
froodogs, i wish it had tvis but it don't! the whole reason i had to advance the timing was gutlessness before 4000rpm!
thanks guys..i always thought pinging would be really loud...luckily a friend suspected that it was actually pinging, not just a friendly rattle
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Location:
Sydney
Registered:
May 2002
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Re: Pinging
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Thu, 14 November 2002 01:04
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pinging is a bitch... AFAIK... it only happens a low revs??? dad was telling me (mechaninc at toyota dealership) that there is a knock sensor that detects pinging and should retard the timing.. he said to test this sensor they just get a hammer and "tap" the side of the engine  .. good old hammer.. always good for fixing things...
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Location:
Rocky Mountains, Canada
Registered:
May 2002
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Re: Pinging
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Thu, 14 November 2002 16:54
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| dylusion wrote on Thu, 14 November 2002 11:34 |
pinging is a bitch... AFAIK... it only happens a low revs???
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Not true... it can happen at any time.
Amazing how much you can learn about timing by remapping a weight/vaccumm based distributor.
Next is my DIY programmable electronic ignition.
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