Explorer 98' engine Pinging

Sep 30, 2006 10 Replies
D

Hi guys,



I own an Explorer with 4.0 OVH or "pushrod engine" When I bought it, even up hill under load engine was very quiet. Recently I notice under same conditions , pinging sound start to come out from the engine. I understand it's not good if it happened for prolong time but with distributor less model , What to do to minimize or get rid of it?



I switched fuel with Texaco, change plugs and cables but sound still exised.



What else do I need to do to improve?



Please help any ideas will be appreciated



Dosio


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V

Just move up one octane grade of gasoline, from regular to the mid-grade, for example. That is why there are different grades, after all. Brands won't make a difference. =Vic= Bear Gap, PA

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B

Try cleaning your MAF sensor. Very easy to do and almost free. Might very well fix it. Google for the procedure. You'll need some electronic switch cleaner and a security type torx bit.

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M

Collectively, you've recieved the best advice possible. I have a 1998 XLT pushrod and have had similar problems over the later years, mostly in Summer when the temperature in NC/SC USA where I live is 90 Fahrenheit or hotter. For what it's worth, my XLT runs very well on Royal Dutch Pet. (Shell) fuels. That's all I use.

  1. Clean MAF with solvent.

and/or

  1. Upgrade to 89 or 92 octane fuel.

and/or

  1. Replace MAF.

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J

Don't forget to check the intake for vacuum leaks( very common)

Might be a lean ping

Spray carb or t-body cleaner @ the intake gasket area and EGR tube where it goes into intake and listen for rpm changing Or use a unlit propane torts

BE CAREFUL Dosio

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