Very excited for my first trip to Lime Rock Park. Thought I had the car sorted and ready to go, but I was sadly mistaken. Brand new RRs installed for the weekend’s 3 sprint races and an Enduro I was going to run with my father. Half way through the Test & Tune day, I noticed an occasional miss above 3,000 rpm. Ask around the paddock for recommendations, all of which included spare parts swapping with stuff that I had not brought. I fiddled with a few wires to make sure they weren’t just loose and pulled the O2 sensor connection. No changes. As the day next day arrived, I was getting more and more concerned as the car wouldn’t make any power above 3,000 and rpm would build so slowly I couldn’t manage more than 90 mph on the front straight (down 20 mph from the previous day). The rain didn’t help me in the enduro, neither did brand new RRs, and the miss made me a problem for the rest of the field. I packed it in and left a day early because I was afraid to show my face after that performance. Now I’d like to figure out what the problem is with the car, but I’m terrible with electrical troubleshooting. Here is a list of what I’ve noticed thus far…
- If I don’t throw the kill switch and let the car sit for more than a day, I have to jump it to get it started
- Several fuses were blown at the track including the 30A for the computer and 1 fuse for the “ignition electronics” and the power windows. Replacing them didn’t help.
- Full or part throttle, it doesn’t matter the car will still miss
- My main relay is zip-tied down
- All my gauges seem to work fine
- With the miss, I believe it smells quite rich, so it’s an ignition problem and not fuel
I have not begun swapping parts out yet, but I would love anybody to point me in a direction to start with first. The spark plug wires are a bit on the old side, the coil has about 8 track days on it, the plugs are 3 track days old.