Wont start AGAIN!! I went to class for a couple of days came back cleaned up some of the wiring(it was all over the place) and tried to start it

NOW IT CRANKS AND STARTS, BUT DIES IMMEDIATELY AFTER(it was running two days ago!!)

before it would start and if you held the gas down for a while it would eventually start, now it starts but immediately dies

Things ive checked:
- compression # 181 181 152 195
- replaced fuel filter
- physically watched injectors fire
- checked coil for any black marks on the cover
- Timing(Fixed)
- Firing Order(Fixed)
- checked distributor wiring
- checked fuel rail for pressure - (has pressure)
- checked injectors for voltage (11.7v)
- removed intake manifold
- Removed injectors and tested them on another motor (injectors fired)
- checked spark (has spark)
- Fuel pump would only prime every once in a while, replaced main relay now it
primes all the time
- checked main relay grounds for continuity
-checked thermostat, tranny, engine grounds for continuity

Modified by marcusgnf at 12:54 AM 4/6/2008


Modified by marcusgnf at 10:47 PM 4/10/2008


Modified by marcusgnf at 10:50 PM 4/10/2008


Modified by marcusgnf at 10:52 PM 4/10/2008


Modified by marcusgnf at 7:47 PM 4/25/2008


Modified by marcusgnf at 3:42 AM 4/28/2008


Modified by marcusgnf at 3:42 AM 4/28/2008


Modified by marcusgnf at 3:56 AM 4/28/2008


Modified by marcusgnf at 3:58 AM 4/28/2008


Modified by marcusgnf at 6:01 AM 5/3/2008

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by marcusgnf &raquo;</TD></TR><TR><TD CLASS="quote">last time i checked injectors were not firing</TD></TR></TABLE>
Found your problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by csulliva &raquo;</TD></TR><TR><TD CLASS="quote">
Found your problem.</TD></TR></TABLE>

wow really i should be driving in no time! smartass, any real info

 

make sure your firing order is right

 

Are the injectors the correct impedance?

 

i am using obd2 injectors which are saturated therefore able to use 12 volts

the ecu shouldnt have a problem firing them, incase i was wrong i tried some obd1 d15 injectors to see if they would fire but didnt get anything either

 

computer or main relay/

 

At this point, what possibilities are you considering?

Based on the information, I am thinking that (1) the injectors are somehow not receiving a signal from the ECU or (2) the fuel rail pressure is too low.

 

bump

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RonJ@HT &raquo;</TD></TR><TR><TD CLASS="quote">At this point, what possibilities are you considering?

Based on the information, I am thinking that (1) the injectors are somehow not receiving a signal from the ECU or (2) the fuel rail pressure is too low.</TD></TR></TABLE>

well i haven't checked the actual pressure since i dont have a guage( ill see if i can get one soon) as far as the ecu goes i have tried a chipped p28 with a h22 basemap, a p06, and a p28, i really dont think its the ECU,

So i was told the the CYP? sensor in my distributor could be bad since it controls when the injectors are suspost to fire, anyone have any direction on checking that (i.e voltage or ohms reading)

 

Have you checked timing, why are you using a distributor with differant internals?
The injectors are always hot when ignition is on, they are grounded by the ECU.

 

im using a hybrid dizzy, because i had two h22 dizzies that were missing parts and they were also external coil, i read in the h22 faq that you can use sohc internals inside your h22 dizzy with no problems as long as you use an h22 shaft

i will be checking some more things tomorrow, since i dont have class thanks for all the input


Modified by marcusgnf at 10:13 PM 4/3/2008

 

also while cranking the motor, the injectors voltage only goes down to 8V

 

https://honda-tech.com/zerothread?id=2053814


This guy had the same problem, although he wasnt clear on what the solution was

 

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up

 

 

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Check all ground wires. I had the ground wire near the thermostat come loose once.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by marcusgnf &raquo;</TD></TR><TR><TD CLASS="quote">

-checked thermostat, tranny, engine grounds for continuity

[/i]</TD></TR></TABLE>

 

!!!Started up!!!

 

Would you mind saying what the culprit was?

 

Well i fixed the timing, tried to start it for a good hour, got a couple of backfires and such, said "F*** IT!" came back the next day started checking the resistance at my injectors(they were ok) tried to start it up and it ran?!!?

Im pretty sure it was the timing, still doesnt explain why it wouldnt start up the first time but whatever...hey it runs

 

bump

 

bump