ghm1969

I was just wondering if someone could tell me what the fuel injector pattern is on my D15B vtec. Are they all suppose to fire at once or in a sequential pattern 1+3 and 2+4?

EsotericImage

iTrader: (8)

look up firing order, and then you shall have the answer you seek yung grasshoppa!

Former User

1-3-4-2

Same for spark and fuel injectors:

ghm1969

ok thanks guys. My car wasnt firing up due to a fuel problem but i wasnt sure what it was. I pulled off my fuel rail and had a look at the injector firing order and they are all firing at once. Do you have any ideas of what could be causing this?

grumblemarc

iTrader: (4)

If it's what I think it is it's the faulty wiring job of your resistor box.

ghm1969

My resistor box is wired correctly

ghm1969

I've triple checked my wiring for the resistor box and it is definately correct according to many different wiring diagrams

grumblemarc

iTrader: (4)

How did I know you had a resistor box? You never mentioned it.
This is how.
https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/93-d15b-turbo-getting-too-much-fuel-2983606/
Don't know why you felt it necessary to create a whole new user account.

ghm1969

I am assuming you know what i am talking about because my son has been posting on this the past few weeks concerning his car and has been running into some issues.

grumblemarc

iTrader: (4)

Is that your "son's" thread? If you read your "son's" thread then you will see that he did a swap of a turbo engine that was reported to have been working properly until the swap. Since the turbo is bolt on the only possible issue is that of the quality and accuracy of his wiring job.

ghm1969

I'm not asking any questions concerning the resistor box. I have the correct ohm readings to my injectors. The question i am asking is why the injectors are all firing at the same time.

I assumed these forums were to help people and answer their questions.. Not to penalize people so for called "stupid questions"

grumblemarc

iTrader: (4)

I never said the question was stupid.
The only thing it could possibly be is the wiring if he swapped out ECUs and it is still doing it.

I even tried researching this issue and could find nothing on the internet anywhere.

But if this is NOT the same issue as in that thread then perhaps you need to fill us in on some back-story as to how the injectors came to all be spraying at the same time.

Former User

Please feel free to ask any relevant tech questions on this forum. I don't think anyone has said your questions are stupid. I think what is needed is for you to provide the details about your set up. Without that, it's difficult or impossible to help you.
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You MUST provide all pertinent information about your car and engine. Failure to do so may result in thread closure.




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ghm1969

First when the d15b vtec engine was put in the car, everything was wired in except for the resistor box. We did not know what the resistor box was so we figured if the car ran without it then it was for some other option on the car. The car fired up fine with the 450cc injectors and ran for a while. We took it out and ran it back and forth the street a few times and then she bogged and shut off (as if she flooded herself). We pushed it back to the house and pulled the plugs and they were soaked in gas. We then dropped the oil and it had alot of gas in it aswell.

We troubleshooted that for a while till we stumbled upon the suggestion for a resistor box. Then realized that was what was missing and the cause of her gettin too much fuel. Then we wired it in using one of the many wiring diagrams here and still got no head way with it. The car would start but wouldnt run for any longer than a minute or 2. She washed herself down again eventually after trying this a few times.

We put the car aside for a while and ordered a set of 440cc injectors from a supra thinking they were saturated and did not need a resistor box (not knowing the chipped ecu couldnt run saturated injectors due to the fact it is tuned for a resistor box) but still ended up with the same problem. After my son asked a few questions on this site, we discovered that the 440cc injectors were peak and hold the same as the 450s which we already had. So we then hooked up another resistor box from an accord and the car fired up perfect again. She was taking fuel fine and running half descent but then after running for a few minutes she shut down again.

Then we were curious as to know whether or not the resistor box was a self ground or not and if this was the problem. We found out that it wasnt so then we pulled the fuel rail off and rolled the car to see the injector firing order and they were all firing at once. So now we are wondering what could cause this to happen.

Also I was wondering exactly how many ohms should be going into the resistor box and how many should be coming out to go to the injectors.

Hopefully this will help you understand our issue.

thanks

ghm1969

Let me know if you need anymore information

Former User

Do the injectors spray fuel with the key in ON(II) without the engine running? Or do they spray only with the engine turning?

ghm1969

only when the engine is turning

ghm1969

they arent spraying constantly as if they were stuck open. they are pulsing like they should but its just that its all 4 at once

Former User

Injectors fire only when the ECU grounds their voltage. Either all of your injectors are spliced into one ECU injector terminal or the ECU is bad.

ghm1969

would there be any way to check if its the ecu? would there be anything burnt up?

Former User

An ECU may look fine but be bad. However, if you inspected and saw obvious damage, then you would be more confident that it's bad. Otherwise, you just need to swap in a known good ECU. It helps if a buddy has a compatible one.

But first triple check the four wires that run from the injectors to the ECU.

ghm1969

ok thanks. also if the ecu is bad would it only be the injector drivers?

Former User

It doesn't seem impossible. The ECU is receiving and processing the signal from the CKP sensor inside the distributor. Otherwise, the injectors would not pulse at all. Have you carefully checked the four wires?

ghm1969

that is what we are in the process of doing now. I was just wondering for future reference about the ecu because i have a p06 and a p2e and if it could only be the injector drivers, i could desolder them and solder in good ones if they are campatable from either the p06 or the p2e

ghm1969

Also i had to change the plug for the distributor so could this cause this problem aswell?