Sounds like an exhaust leak

Sounds like an exhaust leak

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By Edsel Ed - 9 Years Ago

Accelerating from a standing stop I get a sound like an exhaust leak. I changed the header pipe gasket 1st, no change. Cant see any cracks in the exhaust manifold and nothing loose down the exhaust system. I cant see inside the muffler but its quiet in the back? Any ideas where else to look of how to do a "shade tree" test? BTW the fuel pump is very noisy tap, tap, tap.

By charliemccraney - 9 Years Ago

Check valve adjustment.

The fuel pump shouldn't be noisy. If you're sure it is the pump, maybe it needs a rebuild or replacement.

By Edsel Ed - 9 Years Ago

The sound is not like rattling valves at all. I am going to get someone to help me identify the location at an idle you cant tell there is anything wrong. Thanks

By Edsel Ed - 9 Years Ago

Hi Guys How about a crack in the intake manifold? It sounds like it coming from underneath the intake manifold under the Carb. Have not pulled it off yet, Ed

By Edsel Ed - 9 Years Ago

Can I get a range of good compression for a stock 292? Mine was just measured out at between 125 - 130 on all cylinders
At a reliable shop and I was also told its running strong with good vacuum (seems a little low) for a 120+k mile engine

By Ted - 9 Years Ago

Edsel Ed (6/30/2016)

Lots of variables for cranking compression readings with the compression gauge itself being at the top of the list. But as a general rule, the readings for all the cylinders are expected to be within 10% of each other from the lowest to the highest.

By chiggerfarmer - 9 Years Ago

I have had two 54 cars with 239 motors and the little 2V carbs burn holes in the exhaust part of the intakes, one on top and the other underneath. I have never seen any other year manifolds do this, but they very well may.