RE: Re: RE: severe detonation problem

From: Bernd D. Ratsch (bernd@texas.net)
Date: Tue Dec 10 2002 - 08:49:47 EST


North or South?

-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Jim Miller
WB5OXQ
Sent: Monday, December 09, 2002 5:47 AM
To: dakota-truck@dakota-truck.net
Subject: DML: Re: RE: severe detonation problem

80 miles from Waco.
----- Original Message -----
From: "Bernd D. Ratsch" <bernd@texas.net>
To: <dakota-truck@dakota-truck.net>
Sent: Monday, December 09, 2002 1:53 PM
Subject: DML: RE: severe detonation problem

>
> Jim,
>
> There are some spots on the belly pan that you can't see through the
> manifold opening. How close are you to Pflugerville?
>
> - Bernd
>
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Jim
> Miller WB5OXQ
> Sent: Sunday, December 08, 2002 8:20 AM
> To: dakota-truck@dakota-truck.net
> 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.
>
>
>
>
>



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