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glweek · 01-25-2018, 03:19 AM

I have a 1997 HX with 180k on it and am getting a ping starting around 2100rpm with even the slightest load. The spark plugs are NGK ZFRF4-11 with an OEM distributer cap and NGK wires all replaced about 10k ago. Timing is set to 12* as indicated in my Haynes manual. The Timing was checked with the jumper installed causing the check engine light to stay on, idle at 670ish checked with a gun with perfect red mark indicated as well as OBD2 reader also showing exactly 12.0* between 667-677rpm.

Its been happening for a while, but not getting any worse. I also have possible piston slap, first start on cold mornings till the motor warms a little. I have but haven't gotten around to installing a new fuel filter and have a pressure checker but have not checked compression yet. EGR valve was cleaned about 10k ago as well. Been raining for a while and no garage so can't check the valves at the moment.

What else do i check?

01-25-2018, 03:19 AM	#1 (permalink)
glweek EcoModding Lurker Join Date: Mar 2017 Location: Bellingham Wa Posts: 2 Hx - '97 Honda Civic Hx Thanks: 0 Thanked 0 Times in 0 Posts	Civic HX wizards I need help. I have a 1997 HX with 180k on it and am getting a ping starting around 2100rpm with even the slightest load. The spark plugs are NGK ZFRF4-11 with an OEM distributer cap and NGK wires all replaced about 10k ago. Timing is set to 12* as indicated in my Haynes manual. The Timing was checked with the jumper installed causing the check engine light to stay on, idle at 670ish checked with a gun with perfect red mark indicated as well as OBD2 reader also showing exactly 12.0* between 667-677rpm. Its been happening for a while, but not getting any worse. I also have possible piston slap, first start on cold mornings till the motor warms a little. I have but haven't gotten around to installing a new fuel filter and have a pressure checker but have not checked compression yet. EGR valve was cleaned about 10k ago as well. Been raining for a while and no garage so can't check the valves at the moment. What else do i check?