I have an 02 F-250 4X4 XLT with the Triton V-10 and 38K miles. A while back I had the local Ford dealership perform a throttle body/fuel injection cleaning service. The truck has run fine until recently, I use Chevron 87 octane fule as per owners manual instructions. When I cold start the truck I hear slight popping noises from the tail pipe. Any ideas or suggestions?

Thanks in advance.

 

Sounds like a partial misfire - check the plugs and boots. Or there's a vacuum leak?

Could be lots of things...

Guys???