BONNARSKI

I have a 1990 UKDM CRX fitted with a B16A2 EK4 VTI engine running of the CRX OBD0 management.

The engine ran fine but started loosing spark so i tried a distributor. Got spark back but no fuel so built afew dizzy's until i got fuel and spark but now it's drowning the plugs with fuel.

I've checked timing from top to bottom and all is spot on. Tried another ecu, tried bypassing the main relay, checked plug lead order and tested all the new sensors in the dizzy.

What else can it be?

zrickety

iTrader: (1)

A bad fuel injector? Is it a new swap or a previously sorted car?

Mike_ef

Did you try and clean the fuel injectors with carb cleaner?

BONNARSKI

It's over fuelling on all 4 injectors.

The car ran fine when i first fitted the B16A2 for about 3 months then it started loosing spark.

BONNARSKI

How would that help over fuelling?

meda215

fuel pressure regulator is most likely bringing ur fuel pressure up.....so either its bad or ur vaccuum isn't strong enough so check ur vacuum hose to fpr or get new regulator


Posted from Honda-tech.com App for Android

BONNARSKI

I'll give that a go, thanks

BONNARSKI

Update so far -

Found out the ecu i was given is bad, plug it in and the main relay clicks but no fuel pump action. Plug mines back in and all works as it should.

Just recently found out that there is a difference between the crank wheels in the OBD0 and OBD1/2 dizzy's. Might seem and obvious mistake to some but i have never came across any info on this in over a year of looking about Honda distributors online.

So built another with a good ICM and my ecu put up CEL 8, TDC sensor, so replaced it but still no go.

WTF?

Former User

What ECU?

Any CEL codes?

You probably need to convert to OBD1 for the B16A2.

BONNARSKI

The ECU and all wiring is OBD0 from the car which ran fine on the B16A2 with no issues.

It was putting up CEL 8 which is TDC sensor, changed that and now no spark.

Having one last go now then she's coming outa the shed lol

BONNARSKI

So i'm sticking with my new years resolution and fitted all new sensors into the B16A1 dizzy casing and tried it on the car.

The car now tries to start but it then give two big bangs so i turn the ignition off.

It seems like timing but the engine is timed up perfect and has never moved and i've tried advancing and retarding the dizzy position but still the same.

Any ideas people?

puertoricanboy90

An OBD0 ECU must have an OBD0 distributor. The trigger wheels are different, like you said, and will read differently. The ecu can't guess that you are no longer using an OBD0 distributor, thus it reads as a faulty crank position sensor. Get a distributor from an OBD0 gsr or b16 and try it. Or convert to and OBD1 ecu.

BONNARSKI

I finally got a dizzy built up using new sensors and ignitor but it's still not running right.

When it's just started, whether hot or cold, it will start on three cylinders until given a steady rev until i can hear it come back on all four.
When it does come on all four it immediately puts up the ABS and CEL light with the code 9 for cylinder sensor coming up on the ecu.

Also it doesn't seem to be coming on V-Tec as sharply or loudly as before, the only other thing i put back on the car was the standard exhaust manifold due to the 4-2-1 stainless mani i was using hadn't the two O2 sensors in it.

I am going to check and change the CYL sensor today but would that be the only problem? I don't see how the CYL sensor would effect the ABS.

Hope somebody can help ......