Exhaust leakdown testing

[wirelessF]

Is it possible to block off the exhaust tailpipe using a silicone coupler and PVC pipe cover with a fittng on the end for the compressed air to pressurize the exhaust to find exhaust leaks?

Similar to an engine leakdown test.

Sorry if this sounds confusing.

 

[Steve S]

Get the engine running and have someone put the foot on the end of the exhaust pipe while you look or listen for a leak.

 

[rg200amp]

I would try spraying the whole exhaust system with soapy water, then start it up and look for bubbles being made.

 

[tom slick]

you'd have to block off the exhaust manifold also, otherwise the air would flow right through any open exhaust valves.

 

[mechtech2]

A quick check for exhaust leaks is to jam a rag in the tailpipe, and start he engine - a helper is handy. Try revving it up.
The car will only run for a short while like this, so be quick. You will probably have to try it a few times.

 

[Rooy]

I've used a shop-vac (blowing) connected to the tail pipe (duct tape coupler) and then sprayed soapy water to find the leaks. Worked well.

 

[mechtech2]

Rooy.
Hmmmmm.... Not a bad idea.