RE: [Chrysler300] popping

[john_nowosacki@xxxx]

Aside from giving up and just shipping the car to me with the title ;-) The only other wacky idea I might have is the distributor/timing, since a weight shift during the turn might possibly move something inside the distributor to effect timing. I think it's more likely to be an interference problem of some kind, potentially even a vacuum line (including the big ones for the power brake booster, which run to the extra tank under the left front fender). Do you dare try this manuever with out vacuum lines attached to the booster? If there's any interference with a vacuum or fuel line when making the turn, it would certainly effect air/fuel ratio, and could cause backfire.
I once had an itermittent problem like this on a 62, and it turned out that the condenser had worked itself loose and would sometimes not provide spark at the right time, causing excess fuel build up and ultimate backfire.
John

-----Original Message-----
From: John Hertog [mailto:crossram@xxxx]
Sent: Tuesday, September 24, 2002 12:47 PM
To: Chrysler 300 Club Listverver
Subject: [Chrysler300] popping


Hi to all,.

I am experiencing a problem which has left me befuddled. Perhaps someone on
this list can help, might have dealt with it before?

The patient is a 300G convertible in bone stock trim . The problem is
popping / burping / backfiring thru the carb(s) on left hand turns.

Before y'all say "carb. float adjustement" , let me tell you that I have
tried THREE different pairs of carbs on this car. I even took a pair of
carbs off my 300G convert, which does NOT pop when making any kind of turn
at any speed. I even roadtested my "G" convert. before removing the carbs
and made many turns at varying speeds before determining that it does not,
ever, pop back thru the carbs.

The result of all this carb swapping has left me completely mystified. The
sick car still pops thru the carbs when making a left. Even pops through the
carbs from my 300G convert, which I know are good. This is a dangerous
situation as it can pop / backfire thru the carbs so hard at times that it
will stall ! The popping mostly occurs when giving a little throttle while
going through the turn - as one would normally drive.

The car runs PEFECTLY otherwise. Good idle. Plenty of power. No accelerator
pump lag. Runs like a dream at any speed - except when making a left turn

I have taken off the rams, reinstalled with new intake gasket. No
difference. This feels like a fuel problem, and not electrical. I have
checked all the wiring, and indeed all the connections to distributor, coil,
etc.

Help. I don't know where to go from here.

John




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