cat converter/light smoke from tailpipe

FORD F-150
Avatar
RACERBOY
  • MEMBER
  • 2 POSTS
:D I have a 1999 ford f150 xlt triton v8, 257,000 miles on it ,never had any problems with it. I am getting a slight noise from underneath kinda like a rattle a mechainic said it was the converter, also getting a very light smoke every now and then from tailpipe, are they connected or should I start thinking about a new truck?
Jul 2, 2006 at 2:48 PM
Advertisement
Avatar
TAURUSWHEEL
  • ✓ASE Certified Mechanic
  • 718 POSTS
  • ASE Certified Mechanic
check your cat, sometimes the heat shield mounts rust, the shield will rattle,, if that's the case use super-long hose clamps to cinch it tight against the cat. 257k is some serious mileage, I would expect a couple of issues.. light smoke could be anything from worn valve seals or guides to rings.. probably a compression check is the first order of business, see what's going on there,, something you can do, watch how the compression builds up in each successive crank, if cylinders are testing low, wet-test them by squirting a little oil in suspects, see what difference, if any it makes.. your mechanic will know what to do
Jul 2, 2006 at 5:25 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.