ellis8500
Member
Gentlemen, need some help diagnosing a problem. Had the 27T out for a drive and it was running great. Suddenly it would not run at idle. Had to stop and set idle screw to a higher rpm just to limp home. Check exhaust pipe temps today and cylinder 8 pipe near head is over 608F [max on my thermometer] when the rest are in the 520-530 range. Looked at carb nozzles and noticed the side ported to that cylinder was more erratic compared to the other side. I suspect it's a valve problem but wanted to get the opinion of the experts. I'll conduct a compression check to see if No. 8 has a burnt valve. Your comments please. Thanks.