Lifter noise vs cracked manifold noise
I have a 1994 Holiday Rambler with a Ford 460 V8. I recently completed a 2,600 mile return trip to Texas and had what I thought was a bad lifter for the last 1,000 miles. It’d be quiet while the engin...
Forum Discussion
DSDP Don wrote:
Take about a three foot piece of 1/4" to 3/8" tubing. Place one end in your ear and move the other end in and around the manifold (starting at the right rear as stated above, and listen for the exhaust leak. The tube will get very loud when/if you find it.
This is probably the best way to find hidden noises in an engine. My father was selling an old station wagon back in the early 70s and I remember as a kid watching an older Hispanic guy (of course he was probably only in his 40s then...LOL...) with a piece of water hose listening to the various places of the engine to check for rolled bearings, clicking lifters and yes, manifold leaks.
It's been my experience that both bad lifters and manifold leaks sound very similar.....BUT...manifold leaks will usually have a slight "puffing" sound along with the clicking. And yes, the lifters will usually quiet down once the engine gets warms and oil gets into the hydraulic port, whereas the manifold leak just keeps on leaking and clicking/puffing.
