I did a search and didn't see much on what I needed. Ok, so I just put my head back on my d16a after gettin a 3 angle valve job, milled .030, and crower stage 2 cam. I just put new msd wires, cap and blaster coil. The whole motor is pretty much rebuilt minus the bottom end. Well at first it was runnin great. It pulled hard. Well, when putting things back together sometimes things forget to get tightened and such. SO I had a little coolant leak, fixed that, and then I had a little fuel leak, and fixed that. Well after I had fixed all the problems, I took it out again and it pulled hard again, but then it started to break up . And I don't mean a little bit, this sounded like a turbo car that was untuned and was killin the spark. I am thinkin a sensor went bad but I want some opinions and some other things to check.
p.s. it doesn't break up all the time just every now and then...it'll run good and then bad type deal. And I have a skunk2 p30 so it doesn't really throw any codes right now. I'm waitin for my friend to come over so i cam put my old p28 in to see if it throws a code.

 

well it finally threw a code on the p28 ....it is code 43...fuel system ****...what could be the cause? I just replaced the fuel filter as well as the o2 sensor.....HELP ME PLEASSSEE!!!!

 

what???no one? some1 please help me....

 

check the injectors.. and make sure there getting a pulse from your ECU.. also make sure the connectors aint all messed up..start from there

 

o yeah dont for get to check your ECu chip make sure all the prong onthe chip are goin in to the right spots

 

thanks....I tried swapn some injectors I already had b4 but they could've been messed up....gonna try some new oe ones today

 

what usually causes code 43?