I just sprayed some carb cleaner around the intake manifold with engine idling ca 750-800 (still cold).
I had not connected the vacuum gauge. On the 300H 2x4 intake manifold, there is an area midway along the sides of the manifold which usually has the paint burned off and is where there is an opening through the manifolds to the valley below. When I sprayed that area, on both sides, the engine “changed” . It seemed to run smoother but at a lower rpm (??). I thinks its odd that it’s where that opening in the manifold is on both sides so carb cleaner is going into the valley. I think SOMETHING there is leaking but don’t know what. That manifold was removed last in 1986 in Ray Dorn’s back yard in Portland while I was on my way back from a meet in Victoria. I had a bad case of valve recession and had to have hardened seats put in on the road. I did not have a torque wrench so I just tightened the dickens out of the screws . I wonder if the gaskets have just burned.
ps. I think my failing starter made its last start! (Maybe)
On Oct 26, 2015, at 4:12 AM, 'Ron Waters' ronbo97@xxxxxxxxxxx [Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:
How are you testing for vacuum leaks ? My method is to hook up a vacuum gauge and get a reading. Then with the gauge still connected, spray carb cleaner at the base of the carb and around the edge of the intake. If the numbers change significantly, you've found the problem.
Posted by: Michael Moore <mmoore8425@xxxxxxx>
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