runs horribly
-
twotonedrift
- Posts: 61
- Joined: Tue Jun 22, 2010 5:17 pm
- Car: rb20 swaped s13 hatch
runs horribly
hey guys, i figured out the problem! lol last night i yanked out the whole harness cuz i was so fed up with the car not starting and i stripped all the tape on it. ended up finding two broken wires close to the relays by the ecu. . fixed them put in the harness and the car fired up. . HOWEVER, i have ran in to another problem lol. the motor runs on all 6 cylanders now, and idles great. but if i try to give it any load. (20% throttle) the car will sputter, and i get an occasional backfire. it feels like im trying to pull a freight train behind me going down the road. . . the way my car sits right now; i have no pcv system cuz my plenum wont allow me to. im going to fix that today, cuz i hear rbs run like doo doo without it. . anyone have any pointers? thanx again..
-
Yellow4g63
- Posts: 3718
- Joined: Mon Jan 20, 2003 6:07 pm
- Car: 95 Nissan RB20 240SX RB20
91 Nissan NX2000 VE power
95 Nissan 240SX Stock - Contact:
Re: runs horribly
sounds like u have a vacuum leak what does the boost gauge read in vacuum at idle?
-
twotonedrift
- Posts: 61
- Joined: Tue Jun 22, 2010 5:17 pm
- Car: rb20 swaped s13 hatch
Re: runs horribly
yeah about that. . i dont have a boost gauge yet.haha. i will n a few days though... i dont think its a vac leak though.
-
Yellow4g63
- Posts: 3718
- Joined: Mon Jan 20, 2003 6:07 pm
- Car: 95 Nissan RB20 240SX RB20
91 Nissan NX2000 VE power
95 Nissan 240SX Stock - Contact:
Re: runs horribly
Did u check your timing then?
Re: runs horribly
+1Yellow4g63 wrote:Did u check your timing then?
-
twotonedrift
- Posts: 61
- Joined: Tue Jun 22, 2010 5:17 pm
- Car: rb20 swaped s13 hatch
Re: runs horribly
well i suppose i can do that. . but this is the thing. i bought this rb from a close friend, and i was around the whole time when he put the motor in his chasis the whole time. and the car ran great. . when i bought off him shortly after, i kno for a fact the timing has never been messed with. so i would imagine that, thats not the problem. but of course (i kno wut yall are going to say) i doesnt hurt to check. . .
-
Yellow4g63
- Posts: 3718
- Joined: Mon Jan 20, 2003 6:07 pm
- Car: 95 Nissan RB20 240SX RB20
91 Nissan NX2000 VE power
95 Nissan 240SX Stock - Contact:
Re: runs horribly
Get the boost gauge and build a boost tester to check your system for leaks and then check your timing again. Check the ecu for codes after that or before could be a lot of things.
-
l0nestar
- Posts: 2251
- Joined: Fri Mar 10, 2006 5:24 am
- Car: 1993 Nissan 250SX
2004 Toyota Altezza
1963 Chevy Impala SS - Contact:
Re: runs horribly
+1Yellow4g63 wrote:Get the boost gauge and build a boost tester to check your system for leaks and then check your timing again. Check the ecu for codes after that or before could be a lot of things.
Verifying timing takes a matter of minutes, and can reduce the search for solutions.
Same for air leaks, be it positive or negative displacement of air.
Re: runs horribly
depending on what rpm this occurs at it may also be maf related.