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...
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Having an exhaust manifold leak on the older GM and Ford V8's is just about guaranteed. If you're not aware of the issue you'll swear that it's a bad lifter. I would wager that what you hear is the dreaded leaky manifold. It happened on my old Chevy P30 chassis with the 454 (I cured it with a set of headers) and now it's starting to show up for the 2nd time on my 1994 Bounder with the Ford 460.
When I bought the Bounder in 2009 the engine had a pronounced Tick-Tick sound when cold or hot. The dealership fixed the leak as part of the purchase agreement. When I took delivery of the motorhome all was quiet and there where new metal shavings on the frame rail under the rear section of the passenger manifold and new manifold bolts were evident. This year I crossed the Rocky Mountains from BC to Alberta four times and on the last crossing I started to notice the tell-tale ticking sound when climbing long hills.
The easiest way to work on the right-hand manifold is to remove the right-hand tire and go in through the wheel-well. Turn the steering wheel hard-left to move the wheel hub forward and out of the way, then climb into the wheel-well behind the hub. There's a surprising amount of room in the wheel-well on my Bounder and once I get under there the manifold is right in front me.
When I bought the Bounder in 2009 the engine had a pronounced Tick-Tick sound when cold or hot. The dealership fixed the leak as part of the purchase agreement. When I took delivery of the motorhome all was quiet and there where new metal shavings on the frame rail under the rear section of the passenger manifold and new manifold bolts were evident. This year I crossed the Rocky Mountains from BC to Alberta four times and on the last crossing I started to notice the tell-tale ticking sound when climbing long hills.
The easiest way to work on the right-hand manifold is to remove the right-hand tire and go in through the wheel-well. Turn the steering wheel hard-left to move the wheel hub forward and out of the way, then climb into the wheel-well behind the hub. There's a surprising amount of room in the wheel-well on my Bounder and once I get under there the manifold is right in front me.
