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cause of running rich

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Old 06-12-2007 | 06:43 AM
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Default cause of running rich

what all can cause a motor to run rich,i bought new plugs,o2 sensor,it has a virgin ecu,no cel's.

im just trying to figure out why my car is smoking grey,the past 3 motors i have put it all smoked grey,not blue,3 different motors,one of which i am positive did not smoke.

could a faulty injector resistor box?having the timing advanced??

any ideas are gretly appreciated thanks

also the car runs good,doesnt back fire or bog or anything
Old 06-12-2007 | 07:16 AM
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Default Re: cause of running rich

Originally Posted by sive ick
what all can cause a motor to run rich,i bought new plugs,o2 sensor,it has a virgin ecu,no cel's.

im just trying to figure out why my car is smoking grey,the past 3 motors i have put it all smoked grey,not blue,3 different motors,one of which i am positive did not smoke.

could a faulty injector resistor box?having the timing advanced??

any ideas are gretly appreciated thanks

also the car runs good,doesnt back fire or bog or anything
stock fuel pump? defective fpr? how much vacuum at idle? need a little more info here
Old 06-12-2007 | 07:43 AM
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Default Re: cause of running rich

stock fuel pump and pressure regulator,but good point,the past 3 motors have done the same,also i think the timing may be off but i have been playuing with it for a while
Old 06-12-2007 | 02:12 PM
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Default Re: cause of running rich

What about the fuel filter? If it's old and dirty, it will cause a blockage that will send your fuel pressure through the roof. Check it out!
Old 06-12-2007 | 06:56 PM
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Default Re: cause of running rich

Originally Posted by 9civic5
What about the fuel filter? If it's old and dirty, it will cause a blockage that will send your fuel pressure through the roof. Check it out!

damn didnt even think about that one,thanks
Old 06-12-2007 | 07:03 PM
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Default Re: cause of running rich

Originally Posted by 9civic5
What about the fuel filter? If it's old and dirty, it will cause a blockage that will send your fuel pressure through the roof. Check it out!
especially since it hasbeen in the car with every motor you put in..
Old 06-12-2007 | 07:05 PM
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Default Re: cause of running rich

Originally Posted by VB2NER
especially since it hasbeen in the car with every motor you put in..
haha your begining to know me to well
Old 06-12-2007 | 07:11 PM
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Default Re: cause of running rich

lol
Old 06-13-2007 | 02:58 PM
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Default Re: cause of running rich

Umm...do you have a cat in the exhaust still? I'm thinking probably not.
Old 06-13-2007 | 03:00 PM
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Default Re: cause of running rich

Originally Posted by MerF
Umm...do you have a cat in the exhaust still? I'm thinking probably not.
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