I went back into the Peewee V4 thread and found that the Peewee first started in January of 2010. It has not been running well and at the Maker Faire last weekend it wouldn't even rev up. I decided to do a tune up on it. The cap was made of clear acrylic and had many cracks from heat stress. When I pulled the rotor out it cracked in half. I made a new cap and rotor and installed a new set of spark plugs and that did absolutely nothing. Next I did a flush on the entire fuel system. I even pushed a drill bit thru all the fittings and passages in the carb and still nothing. It still idled great but labored to get up to speed. I thought maybe the timing was out of wack so I put the timing light on and noticed that the ignition was not firing properly. The timing seemed to be drifting around so I pulled the distributor expecting to find something loose. Well all was tight and I could not find any trouble in the distributor. While I had it out I figured I would replace the sensor and see if that was causing the trouble. I put everything back together and BAM it runs like brand new. I guess the sensors can get weak or something. You read on here that sensors fail and all but I thought I would post this to point out to the membership that sensors can become a problem without completely failing. The engine has been running for 3-1/2 years and anybody who has ever sat next to me at a show can tell you, I run the hell out of them. They are running on and off all day and never cool down so I got my moneys worth out of the sensor. If your struggling with a gremlin and your pride and joy just isn't running the way it used to, try a new sensor.
