hi guys
i have a reallly bad sputtering problems at low rpms but its when i push the pedal hard.... if i push it like 1/5 of tha way down it okay but if i push it in 1/2 way it sputters really really bad and it back fires and all!!! and it doesnt wanna go anywhere like it wants to but it doesnt..... i have a b16 in my civic hatch i have brand new wires, brand new plugs, brand new rotor and a walbro 255 pump in my car!!! i need answers ive been lookin all over to find the answer and i cant.... so please help me ......... i dont have a cat on the car and my o2 sensor has been bypassed with tha computer chip.... i had the blot on tha fuel filter off for about 2 and half weeks because i was parting out but then i decided that im gonna keep the car.... the car was runing perfectly fine before that but tha only thing that got changed is that i had a adjustable FPR and now i dont... i have a stock one....

 

sounds like you are pouring enough fuel into the motor to nearly extinguish the spark.

stock motor + 255 walbro = pig rich

have you hooked up a guage to see what kind of fuel pressure you're at?


Modified by 89s1 at 11:38 AM 11/11/2007

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16ajdmrex &raquo;</TD></TR><TR><TD CLASS="quote">tha only thing that got changed is that i had a adjustable FPR and now i dont... i have a stock one....</TD></TR></TABLE>
Hmmm, wonder if that could cause such a problem?

 

no i havent but i smell gas reallly bad everyday when i start it.... and sometimes it wont even start in the morning or anythin..... it runs prefectly fine when its cold tho....

 

and wud that really be tha fpr because if so ill jus go and get a new one....

 

bump

 

bump