Not having much luck with the motor
I'm not having much luck with the motor.
I got my new clutch and asjusted that saturday morning. It grabs good and i know there's no slip in the clutch.
I got the car on the track and got the car to the point where the speed and acceleration where good but no idle. The second i let off the gas, the car died. Also the second i hit something - even very lightly, the engine cut off.
I richened the low speed and adjusted the idle and the engine seemed fine. Good speed all around and the temp was around 240-255f. By the way, because of our weather, 250f is quite normal here.
I get the car off the track to install tires,etc... Put the car back on the track for the qualifier and the engine is running really rich. No speed at all. The weather didn't really change. We re-adjusted the engine on the high speed needle just a hair. then it ran good.
The next qualifier, the same thing. i didn't touch the engine and the thing ran really rich. We retuned the hsn. The same thing happened in the 3rd qualifier.
during the race, my car cut off at about 8 minute mark. We pulled the car in and my plug was dead. Put another plug in and out i go. since the plug was a different kind, we had to retune a hair leaner. At about 15min the car died again but this time the engine was at 340f !!!!! I stopped the engine and let it cool down. I went back out at 20minutes with an rb 7 cold plug and finished the race. The car finished with a temp of 280f.
This is freaking me out. The engine just seems to re-tune itself. I'm presently sealing the carb, back plate, changing my gas tank and fuel lines.
Are these carbs known to loose a tune?