backfire
 

i have this problem when i first start my stang up it backfires through the driverside tail pipe for about a min and then goes away what would cause this?

Broken stuff....

Just kidding...I just saw that it was your first post and couldn't resist. When you say backfire, do you mean like boom bang kind of $hit or a skip?

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1992 5.0 LX, Edelbrock 6037 Heads, Cobra Intake,E-303, 1.6 Roller Rockers,65MM Holley TB, 75 MM Pro M Mass Air, 190 LPH FP w/ 24 lb injectors,BBK equal length shorties,offroad h-pipe,Mac Flowpath Mufflers, Pro 5.0, 3.73's,Motorsport "C" springs,welded subframe connectors, Ponies w/ 225/50 Nittos, 93 Cobra Spoiler

Daily driver: 89 Coupe with 205K plus, BBK shorties,offroad h-pipe,2-chamber flowmasters with dumps, cut and welded stock shifter...and it runs like a champ.

More than likely, I'd say your injectors are a little clogged or weak.

When you first fire the car up and it's cold the A/F mixture needs to be richer. If the injectors are running under a full load (especially low rpm's), usually they are just barely adaquate.

Like mine!

You could try to clean them, how many miles are on your car?