Good advice about vacuum leaks. How often do members ask about poor running of their engines and I often think – yep, a vacuum leak. But far too often, people asking advice get a flurry of very good suggestions from members but don’t bother to respond back later saying they found the problem and explain what the cause was – so we are all none the wiser. So, I am reluctant to bother much anymore – and some people may be happy with that.
By the way, I recently was getting too hot in my Valiant and found it was continuously feeding water through the heater core. Traced it back to a crack in those small plastic vacuum hoses that feed the selector switch (and then the heater valve diaphragm) that was only visible by tracing and bending all the hoses. Doesn’t take much of a leak to ruin your day. Just keep the possibility of vacuum leaks in the back of your mind.
Henry
From: chrysler-300-club-international@xxxxxxxxxxxxxxxx <chrysler-300-club-international@xxxxxxxxxxxxxxxx> On Behalf Of John Grady
Sent: Thursday, 1 May 2025 1:32 AM
To: dplotkin@xxxxxxxxxxxxxxxxxxx
Cc: skyhawk@xxxxxxxxx; chrysler-300-club-international@xxxxxxxxxxxxxxxx
Subject: Re: {Chrysler 300} 300G/New Yorker brake vacuum tank proper location
I think Dan , it may be the rams that force it to up under the fender ,,not models or brands?
Some conflict with auto pilot too
while on this , big heads up , I had an F that i could not get to run right , maybe even my first one ( as in 1970 or so—yow)
Eventually I found the vacuum tank behind the headlight had a rust hole in it . Way back then . Better put , a perforation not a hole . Not large enough to be an obvious vacuum leak, but large enough to wreck idle or any ram setup attempt by FSM
I misdiagnosed it as carb bs , rebuilt them etc — still the same .
I thought engine had a problem, terrible idle / stall etc .
I found it by accident , saw rust on tank up over tire pressed on it it caved in .
It gets murdered by road salt spray there .
fyi. Check integrity with mity vac
lots of our cars ? leads to needless engine rebuild ..
Epoxy coat ir? or powder coat it if restoring
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