78 Magnum Vacuum diagram hunting down a leak.

[popinsmoke]

So I purchased a new to me 78 Magnum http://www.forbbodiesonly.com/moparforum/forumdisplay.php?27-1975-1979-Mopars

Like all cars I buy used I am going through it a fixing everything that needs fixing and doing maintenance that I am not sure when the last time it was done. So far everything seems pretty well taken care of, the previous owner removed the lean burn system and added a proform electronic ignition system with a orange box.

I have been chasing a vacuum leak that I just can't seem to track down, I have used propane torch and fixed about half a dozen but its still leaking.

I am looking for a vacuum diagram so I can eliminate what doesn't need to be there and ensure what needs to be there is working and not leaking.

There must be 30 yards of vacuum line under the hood compared to my 67 Coronet.

 

[dodge1972]

The black magic women is still under the hood. Assume your replacing vacuum lines. Try blocking the lines with vacuum gauge installed on manifold vacuum ports. Block off brake vacuum booster. Spray engine starting fluid along the seams of the intake manifold, but in the end you may need to rebuild the heads (bad valves). Good luck\

Robert
Aurora, CO