rb20 not firing

Discuss the RB20, RB25 and RB26 series engines.
nurvcom
Posts: 56
Joined: Mon Jul 23, 2007 10:11 pm

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OKI just got this 240sx with swap already installed..

91 240sx HBrb20det swap i think Version 2My spec.The Wire harness is a crazy mess who ever did it.

Here what it happens

When cold and some time when warm... i can get it to start 1 or 2 time (today i got it to start 2 time in a row!!) and it run kinda rich when it does start.

Most of the time it crank crank crank ..

I know it getting fuel no problem Alt work had it check

check vac or boost leaks checked maf checked injectors checked ecu swapedswapped IGN chip out with working one from my friends RB

well I checked wire from ign chip to ecu all wires are ok

only ones i cant find are the 12v and other 2 black that power the coils ? where do they hook to on car?

I what to see if it cut or something


Modified by nurvcom at 11:07 PM 8/11/2009


User avatar
colbol89
Posts: 43
Joined: Thu Jun 18, 2009 8:47 pm
Car: 1995 240sx with SR20DET swap

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Dude not to be a stickler but can you try re-typing that post with a bit more structure and grammar. I'm having trouble really decoding what it is you're asking.

nurvcom
Posts: 56
Joined: Mon Jul 23, 2007 10:11 pm

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bump ............

Sil240
Posts: 2973
Joined: Mon Apr 28, 2003 5:26 pm
Car: Nissan S13 "The One Cam Wonder"

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Check for Spark all cyl'sCheck to see if all the injectors are clicking, then see if they are actually spraying fuel.

If you have spark and fuel, then you should have engine running. But..... if your timing is off then it will mess it up.

Check your ignition timing and your timing belt.

Did the car run previously???If not go buy a new harness, send it to Carl then plug it in and be happy.

rob912
Posts: 320
Joined: Thu May 03, 2007 11:25 am
Car: 91 240 rb20

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cam angle sensor check it now do it

nurvcom
Posts: 56
Joined: Mon Jul 23, 2007 10:11 pm

Post

Check for Spark all cyl'sCheck to see if all the injectors are clicking, then see if they are actually spraying fuel. injectors are work and good

If you have spark and fuel, then you should have engine running. But..... if your timing is off then it will mess it up.

Timing is good perfect

Check your ignition timing and your timing belt.

it ok Coils not getting power

Did the car run previously??? yes ran super good If not go buy a new harness, send it to Carl then plug it in and be happy.
rob912 wrote:cam angle sensor check it now do it


How do i check this ....
Modified by nurvcom at 7:09 PM 8/12/2009

Sil240
Posts: 2973
Joined: Mon Apr 28, 2003 5:26 pm
Car: Nissan S13 "The One Cam Wonder"

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Easy way to check the CAS- pull off the CAS then spin it with the Key On, Engine Off.You should here the 6 injectors clicking and the 6 plugs sparking.

The technical way is to check the FSM and check the resistance and voltage.

nurvcom
Posts: 56
Joined: Mon Jul 23, 2007 10:11 pm

Post

Sil240 wrote:Easy way to check the CAS- pull off the CAS then spin it with the Key On, Engine Off.You should here the 6 injectors clicking and the 6 plugs sparking.

The technical way is to check the FSM and check the resistance and voltage.
Cas Hard to turn so it bad


Sil240
Posts: 2973
Joined: Mon Apr 28, 2003 5:26 pm
Car: Nissan S13 "The One Cam Wonder"

Post

CAS should turn easily.

Yeah you need a new one.

Unplug it and try spraying it with WD40.

Dunno if it would actually work, but its worth a try.

Check out Rawbrokerage, he might have a CAS for you.


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