Bishop

We took a three day, two night trip to the east side of the Sierras (Independence, Bishop, and Mammoth Lakes, CA) for some hiking and climbing. Our misfire issue revisited us as we headed up a steep mountain road to Onion Valley. Again not sure what the cause could be? This time seemed more likely it was an overheating issue but the engine gage was only at two thirds. Just sputtered and died maybe a fuel injection issue with climbing so much altitude since we started the van at 4,000 ft and died in the parking lot at 9,200 ft.