hardeeboy94

ok here we go . i have a 94 civic coupe with a gsr swap just had to replace the head gasket i had the head reworked new valves ,springs,ext. just put new rod bearings in ajusted the valves set the timing . Now the fuel seems to not be right im guessing bc the plugs are burning white so its lean i kno w, now i just need to know what could cause this so ill know were to check.also it does have a chipped ecu vtec 4900 buterflies always open rev 8200 but i put the stock one back in and the plugs are the same please help thanks

fv8s

I recommend an actual tune

hardeeboy94

so what do u mean by an actual tune

NotAJDMFanBoy

A...real tune. Get a wide band O2 sensor, Hondata, Chrome, ECTune or some other tuning software and a chipped ECU and have someone create a tune for the motor. Get some better cams and a header while you're at it.

fv8s

I didn't know they made a human wideband? Get a real wideband if you actually want to see if you are running rich/lean and go from there.

itsnotfast

Check the easy things first. Make sure you have adequate fuel pressure, all injectors firing, and no fuel leaks. Go from there.

Linked

if its a stock gsr and correct ecu mated with it, a tune s gonna cost more money than just diagnosing and fixing your lean problem

have you check/rechecked your timing? at the dizzy as well and check the condition of your o2

if you have a multimeter check if your tps, map for spec

GSE980

replace the fuel filter

hardeeboy94

ok i just replaced the fuel filter and the fuel pump seems to be working fine but still plugs are white and the car is really sluggish you can tell something is not right kind of sound like a subaru even when in vtec it doesnt clean out how do you check the injectors or swould it help if i just replace them i have some available if i want to try them and i know there good because there in a car that is running fine also i checked the spark and it seems to be good but should i try a diff dizzy while im changing things

fv8s

The distributor has nothing to do with you running leans. You need to check your injectors with a Noid light for voltage.

hondaboy9506

ok so the dizzy should be fine i think it was the timing it was off a lil i rechecked it at least thats why it was running sluggish still not dead on i dont think but this moring on the way to work it was running fine until about 25 miles then it started breaking up felt like it was skippin unless i gave it alot of gas or high rpms it would kinda clean out then ab 15 more mile of that it went back to running pretty good again

itsnotfast

Sounds like a fuel delivery issue. Check to make sure all injectors are firing.

hondaboy9506

ok ill check the injectors tonight should they just be gettin 12 volts of my multi meter never had to check injectors before thanks for the help

itsnotfast

Its still possible to have voltage at the injector and it not work, it may be stuck closed or clogged. I would unplug them 1 at a time and listen for a change in the engine. If you have one that causes no change then you have found the problem.

LTCxD2B

do u have an unrestricted type of intake on it because it made my car pop and run lean until i upped the fuel to compensate

wat ever the case a tune is always recommended

hardeeboy94

yea ill try the one at a time injector trick tomorrow but tonight i changed the coil back in my dizzy and the wire to see if that would change why it sounds like its skipping or missing and n change also tried a diff regulator and no change so ill try the the injectors one at the time .it has stock gsr intake but the ecu was mapped to hold the buterflies open all the time and i have also tried the stock ecu to see if that would help and nothing changed thanks for all the help guys this is my only ride and i dont just have the cash laying around to just go take it to someone i have a lil one so u know how it goes plus i like working on my own cars always have but if i can get it running halfway right i plan on taken it around the first of the year to get it tunned at a shop that can put it on a dyno and get the most out of it but like i said i want it some what right first .thanks

hardeeboy94

also itsnotfast how do u check the injectors for voltage sorry for such noob questions just never had to do that or had any of these problems out of one of my hondas ive owned a least not that i could figure out.thanks

Former User

Also check whether the fuel pressure regulator is working properly.

hardeeboy94

ive tried three fuel regulators and all three do te same thing and two came off cars that are running perfect i have a adjustable one but i dont have a gauge yet to check it .gettin one soon i hope like this week end

itsnotfast

You should have 12 volts showing on one of the two wires on each injector.

hardeeboy94

ok still having the same problem but now i have a new one also the car ran hot tonight on the way home from work not all the way hot but pretty hot so i pulled over and let cool down the tried agin and ran hot agian the i just tried a few more times and like the last 10 miles home it actedlike it wanted to but if i would take my foot of the pedal it would go down some then when i got home it ran for like five min. and didnt move passed half way the gauge also when it did it the first time i got to see if water was coming out any where and nothing no bubbles no nothing but the top hose was really tight need help bad ever day driver im ab ready to give up on this gsr motor help please thanks

hondaboy9506

ok agian this morning car ran ok didnt run hot is there anything that can cause the temp gauge to read false readings and i did replace the temp sensor when i dead the head and all the other work .

hondaboy9506

its fixed number three injector was bad just need the valves adjusted and should be back right thanks for all the help guys

Jimster480

If its a stock GSR, then there is no reason to tune it. What ECU are you running? DO you have any CEL's?

hondaboy9506

yea its stock beside the port and polish on the head exhaust , intake but mostly stock but im running a chipped p28