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Old 11-04-2010, 05:55 PM   #1
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Default engine pings

I've got a 95 Ranger 2.3 that runs great with one exception.At highway speeds with the A/C on,it pings like craky unless I'm running premium gas.It has new plugs.No help.Is this just something I have to live with?Other than that,it's a great truck.Any suggestions?
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Old 11-04-2010, 06:24 PM   #2
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The pinging you are hearing is fuel knock, when the engine is under a heavy load and is running on low octane fuel, it will "knock" or ping...You will need to run a higher octane fuel...
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Old 11-07-2010, 10:06 PM   #3
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sounds like you might have some carbon deposis in youre combustion chamberss/valves ,when these deposits get hot the cause the fuel/air charge to pre-ignite causing a ping,try some fuel injection cleaner or seafoam,to clean some of those deposits out,you shouldnt need premium fuel on the 2.3 to run.
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Old 11-08-2010, 06:55 AM   #4
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I have driven several later model Fords of various makes and engine designs. All of them pinged. Even more interesting, Ford actually discourages using high-octane fuel because they say it leads to heavy carbon deposits. Not sure I understand why... Anyway, I have a 2010 2.3 liter with 5k miles on it that pings under a moderate load. Its not horrible, but apparently its normal. Heavy pinging or knocking could suggest a timing issue, but you'll have to use your judgement as to whether you consider it harsh or not.
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Old 11-08-2010, 08:55 AM   #5
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The heavy deposits from high octane fuel is coming from the ethanol mixture in the fuel...As far as I know, Southern States Co-op is the only fueling station (at least around northwestern TN/south-western KY) that has no ethanol mixed into the fuel...
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Old 11-08-2010, 09:32 AM   #6
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I have a similar issue in my '86. I already tried retarding the base timing 2 degrees, it helped but it still pings at low rpm. What should the computer should be bumping the timing to at an idle?
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Old 11-09-2010, 12:11 PM   #7
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Would love to find a no-ethanol fuel locally. No one here sells it without unless you want to buy from a no-name station whose reputation is less-than-stellar to begin with. Who knows what else you might be getting... Then again, big gov wants to up the ethanol content to 15% in the near future. That should really get the engines going eh?
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Old 11-09-2010, 12:48 PM   #8
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I had similar problems, then changed the timing belt and water pump and it all disappeared. Until about 20k miles later.
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Old 11-09-2010, 06:08 PM   #9
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Timing will help, but you can only get so much...
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Old 11-10-2010, 06:15 PM   #10
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theres a variety of things that can cause pinging-timing,carbon deposits,fuel,dont know what they do to the fuel here in calif.,but mine hasnt pinged in the 5 years ive owned it,and i just use 87 octane reg. unleaded.
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