Joseph Posted July 29, 2008 Share Posted July 29, 2008 Hi all - any tips for identifying the source of a leaking exhaust on a '97 Disco 4.0L V8? Should i be checking for physical holes or torn gaskets? Should i just start wiggling things to see what has play? Thanks, Joe Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted July 29, 2008 Share Posted July 29, 2008 Get underneath and listen, also you can hold a hand or something more heat-proof (a rag, etc.) over the end of the pipe to build pressure & make things leak a bit more audibly. You can often see sooty deposits on the pipe near a leak. For a decent quick fix, I can recommend dual-band pipe clamps (available cheap-ish from most exhaust places) and silicone sealant, just as long as it's downstream of the Lambda sensors. If it's upstream, use pukka exhaust putty. Quote Link to comment Share on other sites More sharing options...
Joseph Posted July 29, 2008 Author Share Posted July 29, 2008 After doing a bit of research, there has been a ticking noise coming from around the front of my car and i have noticed a residue around my head gasket area on the left side with occasional whitish smoke coming from the hood (i mistook for water vapor)- ill post a pic... Is this all related to a blown head gasket or just loose screws to hold the manifold onto the head? Thanks, Joe Quote Link to comment Share on other sites More sharing options...
Joseph Posted July 29, 2008 Author Share Posted July 29, 2008 Oh and the ticking noise seems to go away as the car warms up and under acceleration. It seems worse in cooler weather... Quote Link to comment Share on other sites More sharing options...
Les Henson Posted July 29, 2008 Share Posted July 29, 2008 It lessens as the engine warms up because the metal expands and tightens the leaking joint. Start the engine and crawl underneath - you may be able to identify where the leak is from soot deposits/good hearing/feel the puff as it leaks. Firegum is an excellent exhaust sealant - I use it all the time on exhaust systems. Les. Quote Link to comment Share on other sites More sharing options...
drkwack Posted July 29, 2008 Share Posted July 29, 2008 Oh and the ticking noise seems to go away as the car warms up and under acceleration. It seems worse in cooler weather... HI, might be wrong but sounds like a cracked manifold, as it warms up the crack seals up, as already suggested start car get someone to block tail pipe end and quickly look around and listen for a huffing sound, Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.