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> Please help rid me of "ping"
Wyvern
post Sep 30 2016, 08:49 PM
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I am working on a 73 1.7

Valves adjusted to spec
Points set using dwell
Timing on the nose at 27' @ 3500 rpm (vac lines plugged)

She runs fairly well. had lots of ping on a up hill.
I could rev through it ... More ping as revs drop under load.

Today I put in fresh 91 octane and 16oz of seafoam, took a nice drive up a mountain.
Almost all the ping is gone.

Should I retard the timing just a bit ?
Or other suggestions / input much appreciated.
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Wyvern   Please help rid me of "ping"   Sep 30 2016, 08:49 PM
audio_file   Fuel injected or carbs?   Sep 30 2016, 08:58 PM
bdstone914   Any idea of the compression ratio? Yes retard the...   Sep 30 2016, 09:00 PM
injunmort   pinging under load is too much advance, stock dist...   Sep 30 2016, 09:03 PM
76-914   More Sea Foam or try squirting some water in the T...   Sep 30 2016, 09:08 PM
Wyvern   Thank you for input. It is stock FI (D jet) I hav...   Oct 1 2016, 12:09 AM
Perry Kiehl Clone   Make sure the distributor plate in the distributor...   Oct 1 2016, 05:56 AM
veekry9   An extreme technique,filling each cylinder wit...   Oct 1 2016, 06:12 AM
bdstone914   I agree with other to focus on the distributor. I...   Oct 1 2016, 06:27 AM
Mblizzard   Also verify fuel pressure, MPS operation, and abse...   Oct 1 2016, 06:32 AM
r_towle   Lots of carbon build up in the combustion chamber ...   Oct 1 2016, 11:22 AM
mark04usa   Try running Premium fuel :wavebye: .   Oct 1 2016, 03:18 PM
Dominic   Try running Premium fuel :wavebye: . He is, 91 ...   Oct 1 2016, 03:55 PM
ClayPerrine   1. get a normal sized bottle of water. Distilled i...   Oct 1 2016, 04:04 PM
injunmort   if you think a de-coking is nessesary, i like the ...   Oct 1 2016, 05:17 PM
Wyvern   Hello. I rigged a spray bottle the kind you would ...   Oct 3 2016, 03:22 PM
r_towle   Sprayed while driving deserves a picture of the co...   Oct 3 2016, 05:13 PM
Perry Kiehl Clone   Actually premium fuel has more additives, burns sl...   Oct 3 2016, 09:30 PM


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