We recently swapped a B16A into my EF(like last week) and at first it wuz running clean and as of 4 days ago the car has started to sputter, this doesnt seem to happen much when the cars cold but as soon as it warms up it does it like every other minute and it only does it if one steps on the gas hard(floor it) and then it starts sputtering, At first we thought it was the fuel pump so we replaced that, then the spark plugs, and then checked to see if it was the vaccum hoses the dizzy the cap and rotor the wires but so far nah everythings running fine but that problem still persists, need help bad let me know of anything and yes i am running the right ecu, the only difference is that we used an LS harness but we cut and spliced all the necessary wires and wired it up right and yes its bein checked by more than 3 people and so far everything is wired up as it should be let me know and thanks in advance.

 

in for answer, mine does exact same thing, i was thinking dizzy but u say u checked it, so i dunno! next thing would be injectors?

 

timing. mine sputtered when my knock sensor went bad.

 

Why did you use an LS harness and not the chasis harness?

 

Because we still would of had to go through the trouble of cuttin and splicin cuz we want to keep it OBD0 also this way we can sell the B16 wiring harness to one of our friends that needs it, nothins free.oh and we checked the timing aswell and we were thinking that it myght be the injectors, ill let you know.

 

clogged injector?

 

do a compression test

 

Check the cold start system out, sounds like too much fuel?

Any ECU codes?

Are you running a B16A1 with PWO-XXX

 

check your tps or your i think its the fast idle or thermal idle something idk i cant remember but this happened to my friends car and it was the fast idle or thermal someting sensor i dont remember sorry

 

No check engine light and whats PWO-XXX?

 

PW0-XXX is the ECU code and the program it has

 

Check the top of the ecu, it has a red led for faults. Turn the ignition and see if it 'flashes'.

Check the water hoses to the inlet manifold, I take it you have a B16 PGMFI inlet manifold?

 

checked everything you guys offered and it was none of those problems, but was with my buddy that works at autozone and he hooked it up with some Denso iridiums, i never buy them cuz their like 12 bucks each, anyways i put them on and the problem when away, weird huh i had NGKs type Rs i guess it was the spark plugs even though i had changed them for new ones i guess iridium was that much better or maybe those where defective or something anyways thanks for you guys input.

 

Is there a problem with having a b16a1 and running a pwo thats what i have and at low rpms and take-offs my car sputters sometimes

 

i have a 99 si b16a2 and it sputters not always and not at idel and after its warmed up it usually only does it at WOT after it hits vtec thats when it goes pop pop poppop pop and u can feel it in the pull. i put new denso plugs in it a few days ago and it seemed to be be better but its only kuz i had been driveing it a lot that day, and sometimes when its been driven a lot that day i can redline it WOT and it wont sputter at all! its so weird and i have no idea what it could be, anny suggestions? im new to the sight so if u got any ideas reply here kuz i cant start new threads yet or email me @ hayivegotsomethingforyou@yahoo.com or txt me @ 4405238072 thanks! =]

 

You said its fixed with the new spark plugs you put in.... And it would have been much much easyer to have used the stock harness for your car it would have pluged up to your b16 perfect. Then all you would have had to do was wire the injectors in and cylinder position sensor. And swapped a few plugs around at the ecu. Oh ya and swap the 2 outer wires on you tps around. and then wire up your vtec

 

Wow just relized this thread is way old wow

 

My B18 did this same thing. I replaced the Plug wires with Bosch ones and put NGK platinums in it and a new cap and rotor and it all went away. it has no problem going to WOT now.