91 240sx issue

dawson83gt · 10-16-2010, 02:34 PM

so i go to start my car, bone stock ka dual cam. and it has a bad miss. so any way i drive it like that for a while. did a full tune up... didnt really change anything. so i checked injector pulse with my scanner and nothing. so i replace the computor and still nothing, i am stumped and to make it worse cylinder 2 and 4 are both dead now... i checked compression and they are all around 120, also did a leak down text. please someone help me out call or text me please! 513 307 4409 thanks in advance!!!

BTM · 10-16-2010, 04:59 PM

may need a distributer

Kisor · 10-16-2010, 06:11 PM

they were bad for injectors going bad. i had 3 go out on different occasions when mine had a ka. ohm out the injectors and try swapping a dead cyl for a known good one...

dawson83gt · 10-16-2010, 06:23 PM

If the injector was bad would it still show injector pulse? Because that's my main problem. Is their anything else that sends injector pulse? Like besides from the ecu?

Kisor · 10-17-2010, 07:39 AM

if the injector is bad you can send whatever you want to it pulse wise, its not going to work. measure the resistance across the terminals of all the injectors. they should be 8-10ohms

dawson83gt · 10-17-2010, 07:36 PM

Ok will try it