Run premium until you get it sorted out.
Gas is cheaper than a head gasket.
TonyC
-----Original Message-----
From: Jim Miller WB5OXQ <wb5oxq@grandecom.net>
To: dakota-truck@dakota-truck.net <dakota-truck@dakota-truck.net>
Date: Sunday, December 08, 2002 7:12 PM
Subject: Re: DML: Re: severe detonation problem
>
>Plugs are new. Plugs that came out having 30k on them looked good. I fear
>a lean condition and I am running mid grade now.
>----- Original Message -----
>From: "Terrible Tom" <SilverEightynine@earthlink.net>
>To: <dakota-truck-moderator@bent.twistedbits.net>
>Sent: Sunday, December 08, 2002 11:24 PM
>Subject: Re: DML: Re: severe detonation problem
>
>
>>
>> I would try burning premium grade and I would also replace the O2
>> sensors. If they have
>> gone bad - it very well could cause the rich conditions. How new are
>> your plugs? Might want to pull them to see if the electrodes are worn.
>> Running rich will cause a plug to wear out faster.
>>
>>
>>
>>
>> > -----Original Message-----
>> > From: Jim Miller WB5OXQ <wb5oxq@grandecom.net>
>> > To: dakota-truck@dakota-truck.net <dakota-truck@dakota-truck.net>
>> > Date: Sunday, December 08, 2002 3:56 PM
>> > Subject: DML: severe detonation problem
>> >
>> >
>> >
>> >>Just over the past 3 or 4 months my 99 R/T has developed a severe
>> >
>> > detonation
>> >
>> >>problem especially at full throttle but noticable even on the cruise
>> >
>> > control
>> >
>> >>pulling a slight incline. I have changed nothing that should cause the
>> >>problem over the past 4 years. the truck has 49k miles on it. I
>checked
>> >>inside the t'body to look into the manifold and it is very clean so I
>dont
>> >>suspect the belly pan gasket. I have tried techron fuel injector
>cleaner
>> >
>> > as
>> >
>> >>recommended by a local garage owner that specializes in tune ups and I
>am
>> >>running 89 octane fuel but that has not helped. I hesitate to take it
>to a
>> >>dealer because I am afraid all they know to do is retard the timing
>enough
>> >>to stop the knocking and I suspect that will take a big retard as bad
as
>> >
>> > the
>> >
>> >>knock is. I know that will hurt mileage and performance a lot and
since
>> >>timing is ecm controlled it should not have gotten out of adjustment.
I
>> >>wonder if low fuel injector pressure could be the problem? I have no
>way
>> >>to check this. I do not believe there are any vacuum leaks either. I
>am open
>> >>for suggestions because right now I have to drive very gently to avoid
>> >>knocking. Any help would be greatly appreciated. I may have to make a
>trip to Pflugerivlle.
>>
>>
>>
>> --
>>
>> -------------------------------------------------------------------------
-
>--------------
>> Terrible Tom
>>
>> "It's a living thing... It breathes, it eats, ...and it hates..."
>>
>> Silver '89 Reg Cab, V6, Auto, 8 footer, 4x2
>> Silver '89 Reg Cab, V6, Auto, 8 footer, 4x4 w plow - (aka Granpa)
>>
>> AIM Screen name: SilverEightynine
>> Yahoo Messenger: SilverEightynine
>>
>> DML Profile URL:
>> http://www.twistedbits.net/WWWProfile/dakota/LkxxVw49jp7dU/
>>
>>
>>
>
>
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