I have a 1994 4 cyl ranger. Last summer it was crazy hot here in TX. If i parked my truck in the sun I had to use starter fluid to get it going. I was not sure what was causing that.
Fuel pump is good, changed fuel filter and fuel pump relay. Fall and winter came and the problem didn't continue.
This past Sat it was above 95 degrees my truck was parked in the sun and had to use starter fluid to get it going.
What could cause this problem?