Engine wont start

[armin81]

Hi,

 

My Civic MB8 '98 wont start. Bought in august with fault that the engine did not work. Previous owners had also problems with fuel pump, which has been replaced.

Engine wont start although the green immo key goes out, the engine cranks but no spark and I cant smell petrol (possibly no signal to the injectors?).

Trobleshooting with the help of the service manual was no success until I found that the ecu has been fried. Looked for a new one.

The engine is a D14A7 - 1.4 petrol with 55kw.

 

I got a second hand ecu possibly from an MA model '96. The engine was 1.4 petrol 66kw. Engine wont start although the green immo key goes out, the engine cranks but no spark and I cant smell petrol (possibly no signal to the injectors?).

Thinking that there would be immo problem tried to replace the immo chip (found later the article that it doesnt work). Tried also desoldering the immo chip. Nothing changed. Green immo key goes out and engine only cranks.

 

Next I got a set of everything: key, immo unit, ecu from an MA9 '96 (have the complete car. it was driving). Engine is 1.5 petrol vtec-e 66kw. All three things changed and engine olny cranks. It cant be immo related?

 

If i have a matching immo unit and the key AND any ecu - fuel pump primes, green immo key goes out, engine cranks but still no spark.

 

I think that I have checked all the fuses from under-dash and under-hood fuseboxes.

The under-dash fusebox has different connectors. Tried to change that.

I have a D14A4 on my EJ9. It's OBD2a and has the same dizzy. Both Dizzy's work on the EJ9. But the MB8 is missing 5V for the TDC (has only 0,8V). Measured directly from ecu output.

 

Any ideas what am I missing?

[armin81]

Updating this topic. It can be closed. I have a working engine under the hood now.

 

After I relocated two wires for the grounds I got a MIL. The D14 was missing some sensors witch the D15 had.

So I had working ECUs that were better than the D14 under the hood. Only solution I was thinking of was a engine swap.

 

Cause the D16 was already waiting and the D15 had to be dismounted first I went for the vtec engine.

On a saturday spending around 11 hours I had dropped in the D16Z9. I left the original gearbox for now. It's 9A. Let's see how it handles.

This weekend I worked on the wiring. D14 had two plugs under the hood. D16 engine wiring had 3 and D15 had 4. Not sure why so many.

There are some things to do. But the engine started.