Mitsubishi Repair Problems? Ask a Mechanic for Answers ASAP
Hello and welcome to just answer and allowing me to assist you. if everything is ok and tune up done recently what your experiencing is what they call heat soaking , this is usually caused by a low grade of fuel or one used in winter driving, it's the boiling of fuel it extra hot conditions and creates vapor locks in the fuel systems. you can counter act this by using a good octane booster or going up in octane fuel .Hope this helps your decision and if you require further assistance I'll be happy to do so.