Have a truck maintenance question for Mike? Ask your question.
This week’s question: What can I check myself as winter’s coming on and the weather’s getting colder?
Cold weather sometimes makes it difficult for trucks to build air.
One potential DIY fix is fast and easy.
Check the air dryer. If you hear air running out the bottom of the air dryer itself, then more than likely there is a purge valve stuck.
When this happens, you can put your hand over the purge valve. This will reset the purge valve and your truck should build air.