Engine pinging

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Oct 28, 2004 | 02:42 PM

Forty9ford

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Junior User

Joined: Oct 2004

Posts: 54

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From: Kelowna, British Columbia

Engine pinging

I have a 97 F 150 4.6 5 speed. I notice that it "pings" really bad on the hills unless I am using a midgrade fuel or better. I have had the timing checked and they tell me it is ok. I have replace plugs and wires with Motorcraft platinum. Air cleaner is new K&N filter. Any suggestions on what else I can do?

Oct 28, 2004 | 07:33 PM

grafekie

Fleet Mechanic

Joined: Oct 2004

Posts: 1,496

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From: Simpsonville, KY

According to Ford, using higher grade fuel makes the pinging worse.... true? not true?

Oct 28, 2004 | 09:46 PM

chasman97

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Joined: Oct 2004

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I have the the same year and engine as you. My pick up had the same pinging troubles that you mention. In response to the very same question I was told to clean the MAF sensor in the air intake tube. I did and the problem has vanished. No more pinging, runs great. Give it a try..

Oct 31, 2004 | 01:29 AM

SHUSTANG

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Joined: Apr 2004

Posts: 157

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had the same problem. clean the mass air with throttle body safe carb cleaner. napa has it. no more pinging.

Oct 31, 2004 | 07:54 PM

broncbuilder

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Joined: Oct 2004

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how many miles does your truck have? You may want to check the egr and related parts.

Nov 2, 2004 | 08:25 AM

150VANTECH

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Joined: Oct 2004

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I had the same problem after trying to go back down to lower octane gas. I was able to get rid of the ping by weeninbg my 97 4.6 slowly. Half & Half then 60/40 then 80/20. On the 80/20 tank the pinging went away. From that point on, I have used nothing higher than 87 Chevron.