new JDM SR20DE probs

SentraStyles · Aug 11th, 2003, 12:47 AM

I just recently installed a JDM Sr20DE and I have a serious backfire issue... Wasn't their in my old motor. I have a new cap, rotor, plugs, wires etc... When I hook up my jacobs ignition it gets worse. THe backfire is louder... I tried retiming the car twice but am unsure what the problem is. any ideas?

jdmser · Aug 11th, 2003, 05:25 PM

i just did an engine swap myself and i dont mean to offend you with some simple advice like this but there are alot of sensors/plugs or vacume lines that you should just double check.

SentraStyles · Aug 11th, 2003, 07:16 PM

already did!

wickedsr20 · Aug 11th, 2003, 08:26 PM

I'd suggest checking the ignition timing. Sounds like something's not right with the spark.

jdmser · Aug 11th, 2003, 09:15 PM

when i had tried starting mine after the swap it did that. the reason was, they get the engine in from japan then they do a compresion check and they didnt put the spark plugs in all the way. but you already changed those so that cant be it.... I AM STUMPED!!!

SentraStyles · Aug 11th, 2003, 10:01 PM

Well maybe I will double check how tight they are.. maybe one came loose or I forgot to tighten it... But here is a weird thing too, when I tried timing it I couldn't get the pointer to the Second line from the left. go figure that... I don't know if my JWT ecu is messing with it or what but I know I am losing power somewhere... well it doesn't help I need to fix my rear main seal!!!

phastphuker · Aug 17th, 2003, 01:06 AM

A couple of sensors actually can cross to each other, egr etc, I don't have my egr crap anymore and have a couple of leftovers, just a thought.

Additionally, I had the same problem, wasn't as severe as your;s sounds, but I bumped my ignition timing and poof, problem solved. I also put in ngk coppers, v-powers at the same time. so either way. Iridiums suck IMO

p10driver · Aug 17th, 2003, 04:13 AM

Check the timing chain.

niky · Aug 17th, 2003, 06:30 AM

would the timing chain solve that kinda sh*t? i'm having the same issue... but in my case... the engine has died 2 or 3 times at around 2000 rpm, and when i start it, mean backfire...

Katana200sx · Aug 17th, 2003, 11:48 AM

your distributor could be 180* out. everytime we work on my friend's car and have to pull the distributor we always put it in 180 out for some reason.

metro_se-r · Aug 17th, 2003, 01:47 PM

check the plug wire order, make sure they're all in correct order.