My fellow Car Talk fans,
I have a question for you that has stumped the finest minds of Victoria BC Canada. From what I’ve seen online there are other folks who’ve had it and not found a good answer. My truck is my livelihood. I build tiny homes. Thank you.
My 96 GMC Yukon 5.7L is a great beast but has developed a troubling tendency: it struggles to start when it’s warmer out and after driving, doing a short stop, and starting up again. Every so often, it’s so bad it makes a loud backfire with a puff of awful smelling smoke coming from under the hood toward the left.
I’ve done everything the Haynes manual says (air filter, fuel lines, distributor contacts etc) and shown my normally ace mechanic other ideas out there online (timing belt etc), to no avail. I want to understand what is going on, to make the truck safe and reliable and to learn more about how vehicles work. Thank you & Have a great day,
Victoria BC Canada