I have a 1988 Dodge Dakota with 3.9L V6. Over the years I have noticed that when the outside temperature is high (above mid
80's) the engine knocks a lot under a load.When it was new I noticed it went away with higher octane gas. So I made sure I used mid grade in the summers. But these days (55K miles) that no longer helps. And the knock is getting pretty loud.
I replace the plugs every two years (20K miles). But I am wondering if, at this milage, there are other things I should be doing to stop the knocking. Maybe clean the injectors, clean the throttle body or reset the timing.
I would appreciate any insite you might have on this.
Thanks
Derek Toeppen derek snipped-for-privacy@agilent.com