Problems with my ka. misfire or something else??

ONLY for ADVANCED technical discussion about the 240sx!
User avatar
sr20deTsomeday118
Posts: 909
Joined: Tue Dec 04, 2007 1:00 pm
Car: 1991 240sx/se coupe

Post

ok guys, i was driving yesterday and then as i pulled up to a stop light my car starts to shake and it feels like the engine is mis-firing in a cylinder. anyways. i checked plugs, all ok. i bought a spark plug tester to check to see if each individual wire was sparking. they are. i pulled apart the distributor thinking maybe the rotor itself was maybe bad. it was fine. im stumped. any other reason my car would do this. ill post a vid momentarily.


User avatar
numbnuts240
Posts: 32380
Joined: Sat Jul 01, 2006 4:17 pm
Car: 1999 Ford Exploder 4-door 5spd
1974 Datsun Fairlady-Z 250GT
2011 Ford Focus
2010 Mazda 3
Location: TJ

Post

injector maybe, try 240 tech, might get more help there.

User avatar
sr20deTsomeday118
Posts: 909
Joined: Tue Dec 04, 2007 1:00 pm
Car: 1991 240sx/se coupe

Post

http://www.youtube.com/watch?v=w6f3iNWJKbc

vid of my problem ^^^^
Modified by sr20deTsomeday118 at 5:24 PM 10/24/2008

User avatar
frapjap
Posts: 13175
Joined: Thu Jul 01, 2004 2:46 pm
Car: '99 Pontiac Firebird Trans Am
'07 Subaru Legacy
Location: South Coast Massachusetts

Post

Looking like a fuel problem to me. The exhaust sounds like it isn't missing a beat. What happens under load, in between shifts, decelerating, etc?

User avatar
dickie
Posts: 16559
Joined: Tue Sep 06, 2005 7:55 am
Car: Killer Turtle

Post

moved

User avatar
sr20deTsomeday118
Posts: 909
Joined: Tue Dec 04, 2007 1:00 pm
Car: 1991 240sx/se coupe

Post

under load it sounds terrible, when i let off the gas it sounds

User avatar
grecco28
Posts: 73
Joined: Sat Aug 23, 2008 6:15 pm
Car: 1992 240sx

Post

hey dude check the resistance on the inyectors shoud be 12 to 15 ohms top when the engine hot....

User avatar
sr20deTsomeday118
Posts: 909
Joined: Tue Dec 04, 2007 1:00 pm
Car: 1991 240sx/se coupe

Post

grecco28 wrote:hey dude check the resistance on the inyectors shoud be 12 to 15 ohms top when the engine hot....
ok if the resistance is too high, is there a way of cleaning them? fuel injector cleaner? or am i lookin at new injectors either way?

User avatar
sr20deTsomeday118
Posts: 909
Joined: Tue Dec 04, 2007 1:00 pm
Car: 1991 240sx/se coupe

Post

thanks guys, bad injector on cyl 2. resistance was almost 40 ohms . removal and install took all of a 1/2 hr and viola car is running smooth again. NICO FTMFW!


Return to “240SX Technical Forum”