Stock '97 5.2 4x4 w/ 92k...
Runs poorly (low power + ping/knock under even light loads) with 87...
runs ok but has a power-loss under heavy load w/ 89... runs great w/ 93
under nearly all conditions...
I just resigned myself to the extra $3-5 per tankful and never go for
the cheap stuff...
Your milage sounds about the same as mine... I get 15-16mpg w/ my
version of "city" driving (35-50mph w/ a few traffic lights and almost
no stop n' go)... highway is mid-16s w/ my avg. speed between 60-65...
I bought it at 88k and judging by the rest of it's condition I'd say
it's never been tuned up...
Travis Bailey wrote:
>
> Well I've made a little progress on the pinging situation. Dropped in
> 17 gallons of 93 octane! $31 later I was on the highway heading home
> from school for a Dr. appt. and pulled a (record high) 16.9 MPG in fair
> weather at about 75 MPH the duration of the trip. This is also after I
> cranked up the torsion bars about 1.5" to level the front with the rear
> (looks MUCH MUCH better!). Dropped in 10 more gallons of 93 and
> proceeded to run the daylights out of it, either I'm going deaf or the
> pinging is gone. Next tank (tomorrow...on the road again, just can't
> wait to get back on the road again..) I think I will go back to 89 and
> try adding some injector/combustion chamber cleaner and see what that
> does (have a vote or two for Techron, any other suggestions? Ran a
> bottle of Lucas through when I got it, and did the GM Top End Cleaner
> before I did the intake gaskets, that combined with only having 38k on
> the clock I'm seriously doubting the problem is carbon build up). Are
> you guys running regular fuel (87) in your trucks? Mine's dead stock
> (well I've got a 180 stat, Moroso wires and 3923's if you count that has
> modified). One thing I will say is I did notice a slight drop in idle
> quality when I went from my Bosch single platinums to the Autolites. Is
> this from the change in heat range or the change from the platinums to
> the standard style plugs (or both)? Should have saved those to see if
> it pings with those and the premium...only had about 1000 miles on em!
> And then there were the platinum +4's that were in it when I got
> it...probably could have made two sets to sell the ricers. Noticed no
> difference in performance, idle, etc over the single platinums. But
> they are all in a dump, somewhere...
>
> Travis
> '92 Dak 5.2 4x4
>
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This archive was generated by hypermail 2b29 : Sun Feb 01 2004 - 16:29:50 EST