Pings some of the time
I have the 4.6 V8 in a 98 F150, I runs poorly and pings a little, once in a while. then runs great, maintiance suggestions appreciated, Larry
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When was the last time the plugs and wires were changed? Are the plugs and wires genuine Motorcraft? Is the CEL on, and are there any stored codes?
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Also try mid-grade fuel.
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Clean MAF, change fuel filter and plugs.
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I replaced the plugs and wires that helped, I'll clean the MAF and change the fuel filter, thanks for the help, Larry
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Originally Posted by Brew8
(Post 4126607)
I replaced the plugs and wires that helped, I'll clean the MAF and change the fuel filter, thanks for the help, Larry
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I used Motocraft plugs and wires for the change out, when I clean the MAF sensor just a little carb cleaner do the trick, Larry
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Do *NOT* use carb cleaner on the MAF, use MAF cleaner or non-residue electrical contact cleaner.
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Originally Posted by glc
(Post 4140145)
Do *NOT* use carb cleaner on the MAF, use MAF cleaner or non-residue electrical contact cleaner.
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Bought some MAF cleaner, it did not look dirty but gave it a good cleaning anyway seems to run better, thanks for the help, Larry
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You know I have driven this a while and the ping seems to be gone, (good news) but it dogs a little at low rpm, this is a 5 speed manual but it is doggy til 1500 rpm then fine as fine can be, any ideas, the gear it's in dosen't matter, thanks, Larry
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No codes?
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No there are no codes, I did get the check engine light several weeks ago it was a missfire on number 5, but nothing since, I would have thought I would have gotten some with all of the studder, Larry
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Sounds like high compresion, -might want to take it in for a Motor-Vac service at the dealer. It sure couldn't hurt. It will cost around $100, but it will clean the inside of the motor up. Might want to also start a regimen of using AutoRX, - that's the only additive that really works.
In other words, I think you have allot of carbon build up ie- tops of the pistons and the valves. |
AutoRX is for cleaning the oil system, don't put it in the fuel. Use BG44K, Techron, or Gumout with Regane for that.
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