1mtx1
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So i been reading thread after thread about over heating 2.5 motors. I guess its the norm to see these motors run well over 270. I found some good info looks like the stock low end setting is to lean when you set it flush. I was running yesterday it was around 41 deg out side and i was sure enough running super hot. I seen temps over 250 (280+) and i had good smoke and it drove ok but i kept getting hotter . I know a air leak is not uncommon for these motors so i was up late going over the motor. I might have to seal the carb but what i did was i backed off the low end a full turn then what the stock setting was. I even think my carb opening from yesterday was on the smaller side so i set the idle a tad higher. I have my high end around 5- 5 and half turns out from closed. All this is not un heard of. I did a test tank to day around the same temps today. I ran around 200 deg after some on off throttle runs. I was not seeing lower temps as i would idle yesterday today i could hear the idle come down a tad and the temps would drop ever 3 or so seconds just a few degs. I did see a lot of fuel build up as i was idling. I had to lean the high end i was stalling after i started then gave it some throttle. I really did not do much with my high end, i know the rule is high first, then low then idle. In my case i was so close to messing up a new motor i had to dial in the low end and idle. I was damn near 8 turns out yesterday and i was still over 260 deg and i had a few flame outs. I plan to do more testing from where i left off. My next investment is a new air filter and i need a can of wd-40 to check my carb/ needle's for leaks. I know the back plate is prone to leaks as well. I really am blown away how so many people have the same issue i do. It can be a simple to high low end and not enough idle gap or it could be a air leak. I am running 20 percent fuel with a new hot plug and i think i am on the right path. I just want to see if anyone has came across the stock settings to be to lean? I know my out side temps are on the colder side so a richer setting would be a good idea.