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Old 06-01-2002, 09:13 PM
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Post backfiring carb

I am currently running a 2.3 2bbl 4 cyl in my ford ranger. A few months ago me and my father rebuilt the carb. for about 2 weeks it ran pretty good, but after a while it began to backfire and choke. I figured it was the air fuel mixure so i adjusted and adjusted it, but it keeps backfireing, no matter what adjusments i make. I then bought new plugs, wires, a new roter and a new cap, but this also did not stop the backfireing, could the problem be coming from the cam.? last i saw it, it was pretty worn, i could never even get over 60 with the truck, but now im lucky if i can get up to 50 before it backfires. every time i take off i have to go nice and easy or it will choke. i am planing on doing a 302 swap, but i still need to relly on this motor for a while longer, i am 17 and i dont make a whole lot of monry working at mc-e-dees. someone please help!!!

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Old 06-01-2002, 09:56 PM
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check you timing...valve and eletrical...if that fails you either have bad jets in your carb or an intake manafold leak.
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Old 06-01-2002, 11:37 PM
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Check the ignition module pickup in the distributor, the TFI ignition uses a special pickup in the distributor that allows the computer to vary the timing. If that pickup is brown or black it's shot, new ones are white. You can't miss it as the module is a kind of rubber and is curved. When these things die the computer will lock the timing at ten degrees (limp home mode) and will cause the symtoms you describe. You would think Ford would allow the computer to light the "check engine" light on the dash when this happens but it doesn't. One of Ford's better ideas I guess?!
“She may not look like much, but she's got it where it counts, kid. I've made a lot of special modifications myself.”

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Old 06-02-2002, 03:21 AM
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check your catalytic converter to make sure its not plugged because fords are bad for that
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Old 06-02-2002, 08:16 AM
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I've had a motor with worn intake lobes, and yes it will backfire through the carb, all ignition
work timing,won't help if your cam is worn. do a compression test , if you are missing on one cylinder you are going to miss on two, air , fuel is altered. you kinda answered your own question
the cam.could it be, yes
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