Anonymous Posted on Jun 02, 2009

!993 Explore 4.0l When I accele I feel a surge in power..

I am having a bad problem with engine surging when I accel, on both mild and hard aceeleration. I am also getting majotr spark knock and it dosent feel like the power is there anymore. I have a new catylitic convertor, new K&N filter, radiator was flushed and serviced. It did have code 336, 172 and 1 other.
I have spent a lot of change on this and need more help, money is tight.
Thanks guys!

Anonymous Jun 02, 2009

The fuel filter was replaced today as well as the cat, tune up is done also. I have not checked the fuel pressure as of yet, anyone know where that number should be? (PSI)
Raymond Ramirez May 11, 2010

you can have the fuel rail tested from autozone if the pressure isnt enough then try the fuel filter (cheap) then the fuel pump....by the way what are the codes indicating.

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Anonymous

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Posted on Jun 02, 2009

Anonymous

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So you gave it a tune-up?

possible causes of of loss of power:BAD SPARK PLUGS AND OR WIRES AND OR DISTRIBUTOR CAP.

GASOLINE FILTER PLUGGED THUS CAUSING YOUR ENGINE TO HESITATE. "loosing power"

AMONG OTHERS BUT THESE ARE THE MOST COMMON.

maybe the engine is worn......old engines tend to loose pressure and they start eating the oil, and also start smoking real bad.

this one is another casue of power loss too.

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1993 Explorer Limited

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97 civic lx 5spd loss of pwr & poor accel, eng surg on acc. Cold start prob & idle LOW whn eng WARM. new plugs & wires - $1200 last mo @ shop for sugr in tank & new fuel fltr & injects. Plz help me!!

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