| Re: Spark Knock is back.... and I figured out why... And it's BACK AGAIN!!!! |
Subject: Re: Spark Knock is back.... and I figured out why... And it's BACK AGAIN!!!! by bogus on 2011/10/20 19:57:28 My logic for blaming EGR and ports, inclusive. Back starting in the early 90s, Honda has a TSB on EGR port blockage in the manifolds. In the pre-ODBII cars, it would manifest as some spark knock and what felt like a miss at highway speeds. It continued with the V6. These little 2mm ports, used to inject EGR back into each cylinder would get carbon build up, blocking them. On ODBII cars, you would get an EGR code. The fix? Remove and tank the manifold. Sometimes you could ream them out with a drill bit or wire, but tanking was the final solution. The result, as stated above, was hesitation at highway speeds and an overall blah thing going on. My 92 is doing much the same thing, except it's even flatter and the spark knocking like a mother... Off to hook my laptop up and see what the computer sees. Keep you all posted. If I save a datafile, I will be sure to upload it. |
