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Nov 20, 2013 | 05:06 PM

96xlt302

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96 302 pinging

hi im new on here and have acouple questions.ive gotta 96 f150 xlt with a 302 and auto.it pings real bad goin up hill especially when you get on it.91 octane its not as bad but 87 octane its real bad.its got 220,000 miles on it.any one know what I can do to make it quiet

Nov 20, 2013 | 05:15 PM

Conanski

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From: Ottawa, Ontario

You need to check the timing, factory spec is 10deg BTDC with the spout plug removed to disable computer advance.

Nov 20, 2013 | 06:08 PM

Doug351

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From: Ft. Worth Texas

Quote:

Originally Posted by Conanski

You need to check the timing, factory spec is 10deg BTDC with the spout plug removed to disable computer advance.

What he ↑ said. No doubt your timing has gotten too far advanced for some reason.

Nov 20, 2013 | 06:11 PM

BigBlockF350

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From: VA

As these guys have told you, check the timing. It may not be set just right.

At 220k miles it also wouldn't hurt to run a good dose cleaner in the fuel to get rid of some carbon deposits.

Nov 20, 2013 | 07:46 PM

timbersteel

Logistics Pro

Joined: Mar 2005

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From: Mexico, Missouri

Agree with all above. Could be carbon deposits in the combustion chamber causing the problem.

Also a.low fuel.pressure situation could exaggerate the problem...but do as other members suggested first.

Nov 21, 2013 | 08:44 AM

White Max

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Joined: Dec 2007

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From: Imperial, MO

It also wouldn't hurt to clean your MAF, especially if you've been running an oiled air filter (K&N for example).

Nov 26, 2013 | 01:41 PM

scrobbie

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From: Independence

Agreed, guys Might even also try premium gasoline with 93 octane that is what i use in all my stuff including small engines. also use seafoam on occaision.

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Nov 26, 2013 | 08:21 PM

scrobbie

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From: Independence

Yeah I have run 87 octane from time to time but it still our 87 octane fuel now a days is junk I think. I wish we still had leaded gasoline like in the old days.

Nov 26, 2013 | 08:32 PM

#10

Eddiec1564

Cargo Master

Joined: Mar 2007

Posts: 2,935

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From: Arcadia, Fla

Have you pulled the codes from the ECU? That may help in figuring out a problem. The EGR system may not be operational and that can cause engine ping too.

Verify ignition timing and pull codes to see what the ECU is telling. Correct those issues if any then clean out the engine with seafoam.