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Car jerking aftet the eninge heats up

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Old 4/26/11, 05:17 PM
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Car jerking aftet the eninge heats up
I have a 93 Foxbody that is supercharged and after driving for a while the car starts to jerk when you get on the gas, but at idle it's fine? Anyone know what can be causing this? Thanks
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Old 4/26/11, 05:35 PM
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plug wires breaking down ?.. look at your engine running in the dark and see if there is any arching from the wires ..
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Old 4/26/11, 06:45 PM
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It's only does it sometimes, usually after driving the car after a while. But I'll check thanks
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Old 4/26/11, 07:55 PM
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It will hesitate when you get on the gas and then jerk really bad but the it will work itself out
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Old 4/27/11, 07:54 AM
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Moving to 'Fox Mustang' section, but will leave a link for today . . . .
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Old 4/27/11, 08:38 AM
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What size injectors and fuel pump do you have? Is the car tuned?
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Old 4/27/11, 12:55 PM
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I'm running 42lb injectors and a 255 walbro pump. And it is tuned
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Old 4/28/11, 12:42 PM
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That pump might be on the small side...not saying its the answer but process of elimination...
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Old 4/28/11, 02:03 PM
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What would you suggest going with then?
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Old 4/28/11, 03:39 PM
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Maybe a hi pressure pump for superchargers...check out aeromotive...pricey but worth it. Pull your plugs and re me what color they are ... black...grey...etc
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Old 4/28/11, 05:57 PM
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They are black. Is possible that since I got my tune done I did some other work to the engine and that's throwing it off
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Old 4/28/11, 10:47 PM
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Originally Posted by darkhorse93
They are black. Is possible that since I got my tune done I did some other work to the engine and that's throwing it off
Too rich...check your fuel pressure. Who makes your injectors? Mass air might be trippn...how's the idle?
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Old 4/29/11, 04:25 AM
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They are ford racing injectors. The idle is fine till it starts acting up.
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Old 5/15/11, 07:41 AM
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So I figured out what it was. It was a combination of the spark plug wires and the fuel filter. I'm pretty sure it might have been the original.
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Old 5/16/11, 06:24 PM
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Originally Posted by HOSS429
plug wires breaking down ?.. look at your engine running in the dark and see if there is any arching from the wires ..
you`re welcome
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Old 5/16/11, 08:14 PM
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And then today I opened up the distributer cap and there's a ton of carbon and all the teeth are worn. Maybe that's it
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