my car hates me, runs rough, backfires, smokes, help! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

tastyratz · 06-24-2004, 06:39 AM

ok guys heres whats goin on, i just dropped in a new ka into my car since the one in it was messed, and this ka needed a headgasket changed. i put a new hg on it then threw it in. the car seems all wired up from what i can see, and i timed the distributor according to tdc rotor pointing to the front, etc. i put the chain and the cams on exactly the same way they seemed setup on my friends ka while he was over. the car starts and idles around 900 rpm, it seems to run somewhat decently but when i put the pedal in a little rpm drops instead of gains. if i give it alot the car will actually backfire a little bit. if im careful with it i can slowly give it just a tiny bit of pedal and work my way up to like 1500rpm at which that point i can rev it freely with light gas and its only lightly hesitant. it still backfires if i give it more than about 30% pedal and starts dropping but its less prone and will rev. if i rev it about say 3500 rpm all the lights in the car get muuuuuuuuuuuuch brighter. at that point if i let off the pedal at all it drops down and idles around 250 rpm barely chugging along. even if i carefully gas it up just a little bit it still drops back down to nothing. car warms up a little over the halfway mark but with no fan its not that bad to do that. it will stay on for a bit too. when i shut it off smoke starts coming out the intake. do you guys think im off a tooth with my timing chain install? any ideas?

06-24-2004, 06:39 AM	#1
tastyratz Zilvia Addict Join Date: Dec 2003 Location: nh Posts: 995 Trader Rating: (4) Feedback Score: 4 reviews	my car hates me, runs rough, backfires, smokes, help! ok guys heres whats goin on, i just dropped in a new ka into my car since the one in it was messed, and this ka needed a headgasket changed. i put a new hg on it then threw it in. the car seems all wired up from what i can see, and i timed the distributor according to tdc rotor pointing to the front, etc. i put the chain and the cams on exactly the same way they seemed setup on my friends ka while he was over. the car starts and idles around 900 rpm, it seems to run somewhat decently but when i put the pedal in a little rpm drops instead of gains. if i give it alot the car will actually backfire a little bit. if im careful with it i can slowly give it just a tiny bit of pedal and work my way up to like 1500rpm at which that point i can rev it freely with light gas and its only lightly hesitant. it still backfires if i give it more than about 30% pedal and starts dropping but its less prone and will rev. if i rev it about say 3500 rpm all the lights in the car get muuuuuuuuuuuuch brighter. at that point if i let off the pedal at all it drops down and idles around 250 rpm barely chugging along. even if i carefully gas it up just a little bit it still drops back down to nothing. car warms up a little over the halfway mark but with no fan its not that bad to do that. it will stay on for a bit too. when i shut it off smoke starts coming out the intake. do you guys think im off a tooth with my timing chain install? any ideas?