B20b swap 91 civic si

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Old Apr 5, 2007 | 05:37 PM
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From: mississauga, ontario, canada
Default B20b swap 91 civic si

ok i got everything in everything done awsom but one problem its runing like a bag of crap the motor was in a 90 integra it got smashed so i boght it for the motor put it in my civic si and used my 91 civic wire harness and now its hard to start and it back fires and bogs and wont pas 2600Rpm ish it starts back fireing and boging ????? what can this be i cheked timeing dizzys good im confuseed some one help IS THERE ENY SPECIAL REPINING ??
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Old Apr 5, 2007 | 05:54 PM
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Default Re: B20b swap 91 civic si (b20efmike)

throwing any codes?

are you POSITIVE that the cam/crank timing is dead on?

does the motor make any weird noises?

does it smoke?

are you getting spark to all the cylinders?
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Old Apr 5, 2007 | 05:56 PM
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Default Re: B20b swap 91 civic si (Suck my DX)

im geting 4 and 14 no smoke

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Old Apr 5, 2007 | 05:59 PM
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Default Re: B20b swap 91 civic si (b20efmike)

almost like the injectors are like not fireing right or someting i dont know do u have to add eny wires or re pin enything im geting frustrated
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Old Apr 5, 2007 | 06:00 PM
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Default Re: B20b swap 91 civic si (b20efmike)

iacv and ckp....the ckp sensor is in the dizzy and im pretty sure it can not be replaced...you need a new dizzy and find out whats up with your iacv....after that reset the ecu and your good to go
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Old Apr 5, 2007 | 06:01 PM
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Default Re: B20b swap 91 civic si (Suck my DX)

if i dont reset the ecu will it not do enything because i had messed arond with lots of things and have disconected it and stuff
and its a bich to start and iv tryed another ecu
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Old Apr 5, 2007 | 06:02 PM
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Default Re: B20b swap 91 civic si (b20efmike)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b20efmike &raquo;</TD></TR><TR><TD CLASS="quote">almost like the injectors are like not fireing right or someting i dont know do u have to add eny wires or re pin enything im geting frustrated
</TD></TR></TABLE>
well the engine is misfiring due to a non operating ckp...try a different dizzy and reset the ecu and see if the code goes away...if not then you need to check if the wires for it have been cut or if the pin came out of the connector...
since you are an si there is no extra wiring repining needed
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Old Apr 5, 2007 | 06:02 PM
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Default Re: B20b swap 91 civic si (b20efmike)

eny way in testing the crank sensor



Modified by b20efmike at 7:33 PM 4/5/2007
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Old Apr 5, 2007 | 06:06 PM
  #9  
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Default Re: B20b swap 91 civic si (b20efmike)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b20efmike &raquo;</TD></TR><TR><TD CLASS="quote">if i dont reset the ecu will it not do enything because i had messed arond with lots of things and have disconected it and stuff
and its a bich to start and iv tryed another ecu </TD></TR></TABLE>
oh yeah thats one thing i forgot to mention....if you try another dizzy and it still doesnt work, and all the wires are in the right place then id suggest trying a new ecu as well...

just disconnect the battery when your doing the work on the car and reconnect it when your done...the ecu will have reset itself...


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b20efmike &raquo;</TD></TR><TR><TD CLASS="quote">it back fires in to the thoroghto body some times </TD></TR></TABLE>

sounds like the cam timing is off as well...make sure it didnt jump timing when it was crashed in the other car
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Old Apr 5, 2007 | 06:06 PM
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Default Re: B20b swap 91 civic si (b20efmike)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b20efmike &raquo;</TD></TR><TR><TD CLASS="quote">if i dont reset the ecu will it still run the same even if i have fixed the problem
???</TD></TR></TABLE>
you need to reset the ecu in order to clear any fixed trouble codes
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