I think that this is definately pinging. My wife's 92 Accord does this often
on hard acceration after the tach gets past about 4500. I suspect that
the injectors cannot supply enough gas at this RPM and the mixture leans
out. If you want a little assurance that it is the gas, try middle grade
or premium to see if there is any difference under similar conditions.
-Jim.
'87 v6 auto 4x4 (snow flurries here this morning!)
> <original post edited>
> There was another car coming up in the middle lane fairly quickly, so
> I decided to use a little V8 muscle ... floored it.
> My truck took off, but at WOT (at about 3500-4000
> rpm) I started to hear a clattering noise which seemed to be coming from the
> lower portion of the engine. I let off the gas, and the noise subsided, but
> when I tried again a little further down the road, ...downshift, punch it,
> same noise, I got a little worried. Was this an internal engine problem, a
> rod knocking or something?
>
> I'm wondering if this is just "pinging" (I run 87 octane as recommended by
> the owners manual) , or if perhaps the computer wasn't having enough time to
> adjust the timing when I went from loafing along at 70 mph in 5th gear, to
> romping on it in fourth gear??
>
> Ned Vogler
--
James A. Babcock, Software Engineer email: james.a.babcock@adn.alcatel.com
Alcatel Data Networks WWW: http://www.adn.alcatel.com
Ashburn, Virginia USA personal web page: http://www.dogwood.com/~jbabcock
Give blood -- it's a great feeling!!!
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:07:26 EDT