vtec sputtering?
 

car is a 90 crx si with a obd-0 b16a tuned on bre with intake header exhaust...

1 thing i did notice when i was around vtec was the rpm's on the tach would jump around then would sputter going into vtec at 5500

when going into vetec i have good oil pressure but my a/f is way off... my wide band goes from 15.2 out of vtec to being 19.3 in vtec

any help would be great

Re: vtec sputtering?
 

that's pretty lean. Have you checked the basics? Sounds like something is causing you to have fueling issues.

Re: vtec sputtering?
 

you have no fuel to burn that lean on a stock motor

Re: vtec sputtering?
 

usually when im in vtec im around 13.6 af didnt start going that lean till the sputtering started saterday... could it be a dizzy going bad,fuel pump or maby bad injector? any one ever had this problem

Re: vtec sputtering?
 

You won't know until you start checking stuff and replacing things. Start simple... fuel filter... fuel pump... etc etc.

well with the weather being nice the past few days it got me pissed off enough to actually go ---- with the car... did a fuel pressure check and it tested at 39psi..... as i was doing that a fellow mechanic at my work helped me with it and came to a conclusion that it would have to be a ignition problem so i started taking the dizzy apart and put a new coil and ignitor in... but then i started getting no spark!!! so i went to unhook the tach wire ran for my alarm and remote start and the ------- wire just snaped with verry little effort so tomorrow i am going to re-pin the conector and hopefully that works.... i will keep every one posted on the progress im sick of not being able to drive my car... and want to get this damn turbo kit on!!!!!!!!!!!!!!!

went out today and worked on it.... still cant get any spark.... tryed another coil and ignitor and main relay still nothing... any sugestions?

check your grounds.

got a new dizzy in today... started up just runs like poop!!!!! it doesnt sputter anymore just acts like it has no power im gona work more on it hopefully tomorrow!

when you put the distrubutor in was your engine at TDC? hows your timing? all your vacuumes hooked up?

I had that when I changed my dizy and it ren like subaru because I forgat to reset my ECU simple is that, just take a fuse from fuse box for 5 sec. under the hood.

all vaccumes seem to be hooked up gona check timing tomorrow

checked cam to crank timing and it was dead on.... it runs a lot better with the dizzy all the way advanced.... just reset the ecu and didnt get any better.... with the dizzy all the way advanced its got power but not like it should ... doesnt have that good of low end power... but when the dizzy is where it should be in the middle it does run like a subaru - the power lol any other sugestions?

look in to the dizzy

thats what im thinking maby the dizzy i just got is going bad!

im having the same issue in my 00 si...its too lean...gotta check for leaks and stuff now.

let me know if u find anything out!

just got a new one ordered will find out in a week or so

Had that problem. It was timing and fuel delivery. Fixed.

i did a fuel pressure test and everything checked out.... checked cam to crank timing and it was dead on.... i have another dizzy on the way so i guess i will have to find out will keep every one posted

what about a valve adjustment

i did a valve adjustment last summer so idk

got yet another dizzy today and just put it in and it was like magic! problem fixed well at least for now lol thanks guys for all the help

hey jeremiah, invest in obd1 dizzy,ecu and jumper harness. I promise you, you will think its worth every penny spent. its a BIG difference in power.

im going to be doing that in the near future

awesome!

VVVVVVTTTTTEEEECCCC!!!!!

lmfao