Engine popping under load - Mustang Evolution

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Old 07-01-2012, 09:17 AM   #1
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Engine popping under load

Was driving my 92 gt the other day. I noticed tht when I am in a low gear and going up a steep hill my engine makes a popping sound. It only happens when I am driving with low rpm. I don't know how else I describe it. When I am puttin it under a load and with low rpm the engine pops and kind of surges. Help please
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Old 07-01-2012, 05:45 PM   #2
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either an air or fuel deliverly problem. have you checked your timing?
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Old 07-02-2012, 01:27 AM   #3
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Re: Engine popping under load

Do you have a leak in your exhaust before the O2 sensors?
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Old 07-02-2012, 05:04 AM   #4
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I am not sure on my timing. But I do have an exhaust leak where the individual tubes meet on my long tube headers. I tried to weld it up but u can't get to it. So an exhaust leak can cause this?
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Old 07-02-2012, 05:20 AM   #5
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Trojan will probably better inform. But yes it could probably cause this. Any kind of leak before the o2 sensor will give it false readings from not travel through the sensor.
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Old 07-02-2012, 06:04 AM   #6
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Re: Engine popping under load

Yes, any leaks before the O2 sensors contaminate the spent gasses and cause false readings by the O2s.
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Old 07-02-2012, 07:30 AM   #7
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Things that make you go hmmm..
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