ok I got a 99 si stock engine(b16a2) 156,xxx and it has short ram intake and header, now the codes it reads it shows I have misfire on all 4 cylinders, replaced spark plugs and i still have the problem and it is also running rich, ecu, or could the coil,distributor be the problem for both? i have done some research with the trusty Google but i never get a straight answer so please help me, if i am missing any info just ask, thanks

 

Remove the distributor cap and inspect the internals. If that looks fine, remove the coil and ICM for testing.

 

ok i will try that and see if that works, thanks.

 

Yeah, a tune - up may be in order. You sure your firing order is correct?

 

^ My guess.

 

lmao all 4 it runs still lol make sur eu got them in order 1st

 

yup still runs, just ah little hesitation when i push down on the peddle, it climbs slow and hesitates while climbing on the rpm gauge.

 

how would i check if my ecu was firing them in order?

 

on time?

 

Find a picture of correctly installed spark plugs and compare.

 

well my dad installed the spark plugs and he is a 20 year mechanic from McKee so i think they were put in correctly.

 

Check your timing, I had the same problem with my civic. It wouldn't pass emissions because it was running rich changed every thing you can think of and it still failed. So I check The timing and it was was off. I fixed it and now it passed emission test with flying colors, not to mention it runs like a champ.

 

and you threw all 4 of those codes also and your car ran just like mine is doing right now?

 

timing im like really sure thats the prob mannn check 1st

 

if your off time you will misfire like that because the spark is not sparking on (time) which you will backfire and run rich bcus your not burning fuel c0orrectly!!!!!! check that n spark plugs jus to b sure

 

yeah alright thanks man you don't know how grateful i am that you gave me this info, i will check it and get back to you guys, thanks everyone for the advice.

 

welcome man no prob love tryin to help ppl