Hey guys, I have a an Orion MTE engine that has a little over a gallon of fuel through it. I am having a hard time getting the temps up past 220 today when I was tuning it, I could hear and see that the engine was way too lean but the motor was still not getting hot. My guess is maybe its shimmed too much. What do some of you veterans out there think? Another thing to mention is I blew a plug the day in a 25 min main. When I checked the temp after they brought my car back to me, so maybe 90 seconds later, the temp was only at 146. Any advise would be great.
Thanks