Explorer 98' engine Pinging

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

you can get the pcm reprogrammed @ a dealer . alot of times the timing is
readjusted when reprogrammed
dosio wrote:
>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

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx...lorer/200610/1

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

"dosio" > wrote in message
. ..
> 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
>
>

I had the same problem with my '92, same engine. There was a jumper
on that model that could be removed to retard the timing. It hurt the
gas milage and performance so much I put it back and ran premium gas
from then on. There is a lot of discussion about this if you do a
Google search of news groups. I ran the premium gas for a number of
years until I sold the vehicle and moved up to a '99.

On Sun, 1 Oct 2006 08:19:14 -0400, "Vic Klein" >
wrote:

>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
>
>"dosio" > wrote in message
...
>> 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
>>
>>
>

dosio wrote:
> 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
>
>
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.

"dosio" > wrote in message
. ..
> 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

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

2. Upgrade to 89 or 92 octane fuel.

and/or

3. Replace MAF.

>


>

Thank you all , I'll try all suggestions out and post the outcomes
Dosio
"dosio" > wrote in message
. ..
> 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
>
>

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<, don't set engine on fire


"dosio" > wrote in message
. ..
> Thank you all , I'll try all suggestions out and post the outcomes
> Dosio
> "dosio" > wrote in message
> . ..
> > 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
> >
> >
>
>

If none of the above worked, try using a product called Sea Foam. It is used
like an injector cleaner product, but you can pour into your engine thru the
oil filler. The recommended amount is to use 1 pint (the entire bottle). Also
try pouring another bottle into your gas tank. I tried this on my '98 V8
Explorer, which was making a ticking noise, and was producing a non-stop
Check Engine Light, and agfter using Sea Foam, everything was fixed,
including the CEL!

Here's their website: http://www.seafoamsales.com

JohanB wrote:
>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<, don't set engine on fire
>
>> Thank you all , I'll try all suggestions out and post the outcomes
>> Dosio
>[quoted text clipped - 14 lines]
>> >
>> > Dosio

I've heard , to check intake vacuum leak with carburetor cleaner, is this
true?
Dosio
"JohanB" > wrote in message
...
> 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<, don't set engine on fire
>
>
> "dosio" > wrote in message
> . ..
>> Thank you all , I'll try all suggestions out and post the outcomes
>> Dosio
>> "dosio" > wrote in message
>> . ..
>> > 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
>> >
>> >
>>
>>
>
>