Just failed the emmissions inspection on the VX. CO was very good at idle and 2500 rpm but I failed the HC at idle test. 239ppm, 220ppm limit. At 2500 it was 116 so no problem there. I looked at my spark plugs again. I noticed a strange thing. While the electrode looked good, the insulator was white on one side and black soot on the other side. 3 of 4 plugs looked this way. It's like the combustion is fine on one side of the chamber but rich on the other side. I put in an old set from the Del Sol and decided to drive on those plugs for awhile to see what they look like. The only problem is that the heat range is one higher than what is recommended for the VX.
Anyone have an idea what would cause the plugs to look like that?
On another note, I installed my new main fuel relay which was preventing me from CODfishing. The drive to work was very interesting, just over 72.3 MPG which is about 0.5 better than my PB in the Del Sol. What made it interesting was that the FE at my milestones started out lower than the Del Sol. But when I got to the 6 mile uphill climb on the highway in lean burn mode I was able to make up for a 10 MPG deficit.
First milestone at 6ish miles, Del Sol - 63.59, VX - 61.10.
Second milestone at 13ish miles, Del Sol - 89.16, VX - 79.90.
Third Milestone at 19ish miles, Del Sol - 69.00, VX - 69.33.
Work at 25 miles, Del Sol - 71.71, VX - 72.33.
I could only get my HC down, I might really be able to see some good numbers.