SR20 swap wont start !!!! HELP!!!!

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Dcasil80slider
Posts: 237
Joined: Wed Dec 07, 2005 1:59 pm
Car: 1993 240sx se sr20det fastback 5speed
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93 240 hatch with 93 sr redtop swap. chipped ecu for 300 maf bigger turbo and 550s. sum1 before me wired in a safc2 to the harness but i cant get it to start. i get power at the coil packs but no spark it spins freely but will not fire help!!!!!!!!!!!!!!!!!!!!!


Dcasil80slider
Posts: 237
Joined: Wed Dec 07, 2005 1:59 pm
Car: 1993 240sx se sr20det fastback 5speed
Contact:

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anyone ??? i know i sound like a noob but i have searched about this and its driving me nuts. this is my first sr swap and iv spent about 3500.00 so far and its pissing me off because it wont run. im no noob when it comes to my 240 iv had a few ka's but like i said this is my first sr20. I have a greddy rs bov, greddy ls front mount kit, greddy hotpipe, greddy oilpan, greddy 80mm downpipe, 550cc deatschwerks injectors, nismo fpr, nismo thermostat, ported t25 turbo, solid rocker arm conversion, brian crower 272 cams, altima fans, port n polish, valve job, carillo rods, crower pistons, new cas, os giken tripple disc clutch, ka transmission, 300zx n62 maf, 300zx twin turbo ignitor chip, vibrant performnace intake piping, apexi safc2, driveshaft shop steel 1pc driveshaft. So i have spent all this cash and it still wont run please some one help !!!!!!!!!! my email is [email protected] if you need pictures of my setup. i think my problems are in my wiring harness right by the ecu ( the guy who installed my safc2 was not the brightest or neatest with my harness so i may need a new one

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240life
Posts: 1313
Joined: Mon Sep 24, 2007 6:02 am
Car: 1993 Nissan 240SX S13 Coupe SR20DET blacktop
Location: ME
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you said it before i could type it. I recomend getting a new harness, getting rid of the safc2 and getting a rom tune.....or find someone h\who knows how to set that thing up right

WizardBlack
Posts: 99
Joined: Wed Sep 19, 2007 5:35 pm
Car: 1977 Datsun 280Z w/ RB25DET

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There is nothing wrong with an S-AFC2. Likewise, if you want to eliminate it, you don't need a new harness. Buy a soldering iron and shrinkwrap if you wanna remove it and it will be totally fine. Bust out the FSM and do some ignition diagnosis, etc. Make sure your "new cas" is working properly, etc.

Kalypso
Posts: 8609
Joined: Tue Jul 24, 2007 10:10 am

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my body harness and fuse boxes were in bad shape

so once I got a replacement, it turned over, and fired up like a whip.

Dcasil80slider
Posts: 237
Joined: Wed Dec 07, 2005 1:59 pm
Car: 1993 240sx se sr20det fastback 5speed
Contact:

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my ecu was chipped for no speed limiter, 9000rpm rev limiter, a 300zx maf, fmic,nismo 550cc injectors, 300zx ignitor chip, s15 turbo, and 15 lbs of boost( i think) but anyway i want to keep my safc2 for minor tuning and so i can run it lean to pass emissions. pa emissions sux balls with no visible egr i am screwed. any1 have any ideas on passing that little bump in the road ? but i was tooling around with it this week and i found out that i had my fpr set at about 62psi at static pressure lol i bought a cheapie fuel pressure gauge and some fittings at advance auto and installed it so now my pressure is at 35-36 psi (correct me if i need to readjust) but still the same problems. im getting power to the coil packs power at the ignitor but no firing and it sounds as if i have a compression leak ???? dunno whats going on here guys im at a loss. im considering giving wiring specialties a call ( any 1 know if they do a decent job??? ) i want to keep my safc2 but i dunno if its worth the trouble. is there anything else that might be doing this ??? i just want this thing running already or else its gonna be up for sale soon :'(

Dcasil80slider
Posts: 237
Joined: Wed Dec 07, 2005 1:59 pm
Car: 1993 240sx se sr20det fastback 5speed
Contact:

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gonna grAb a compression tester and run it i think i have a bad cylinder mebe im not sure

Dcasil80slider
Posts: 237
Joined: Wed Dec 07, 2005 1:59 pm
Car: 1993 240sx se sr20det fastback 5speed
Contact:

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145 across the board on compression. im thinking cas mebe 180 off. any other ideas guys ???

Kalypso
Posts: 8609
Joined: Tue Jul 24, 2007 10:10 am

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please break your post down into lists, and bullet points, most important to least.

you wont get much help if its hard to read.

Dcasil80slider
Posts: 237
Joined: Wed Dec 07, 2005 1:59 pm
Car: 1993 240sx se sr20det fastback 5speed
Contact:

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Figured out a few things. 1. coil packs were wired out of order. 2. timing was 180 off.

next question : should a sr have problems turning over if there is no downpipe connected ?


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