Ok, so we dropped a B18c1 in my buddies EG, and it's not turning over. Thing's we've check / done.

1. We are getting spark to all 4 plugs
2. We do have fuel preasure, about 60 psi
3. We are getting fuel to the injectors

Things we need to do
1. Compression test
2. Verify that every injector is firing

Any other ideas would be greatly appriciated. Don't be afraid to suggest something obvious, like a fuse or something (which we did check BTW)

Thanks in advance

 

Define, "not turning over". Does it crank at all?

 

wiring all good? sensors are all hooked up? swap ecu to check ecu. dunno. need more info.

 

the moter is an OBD1 B18c1 running a skunk 2 mani, and a p30 wire harness and ecu. P30 because the Intake Mani doesn't have the secondarys that a p72 would be looking for.

It's cranking fine, that's how we could see the spark, but it's not turning over. It's like there isn't any combustion happening. I think that the injectors aren't firring, or opening to allow fuel into the cylinder.

We are going to check the wirring, to make sure that we have continuity to the injectors, also we'll probably change out the ECU too

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TahitianEG &raquo;</TD></TR><TR><TD CLASS="quote">It's cranking fine, that's how we could see the spark, but it's not turning over.</TD></TR></TABLE>

Just FYI, cranking = turning over It's just not starting.

What do you mean a P30 wire harness? The ECU is P30, the harness should correspond to the vehicle with some sort of an OBD distinction (1, 2a, 2b, etc). Try running the P72 anyway, as I believe it doesn't "look for" the butterfly's solenoid (in other words throw a code); it's just a dumb pin that sends an on/off to the solenoid.

Also make sure that the harness matches your vehicle in terms of OBD distinction (EG = OBD1), your ECU matches your harness (OBD1, otherwise you need a conversion harness), and make sure you have all 3 required grounds attached.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TahitianEG &raquo;</TD></TR><TR><TD CLASS="quote">2. We do have fuel preasure, about 60 psi</TD></TR></TABLE>

Btw, your fuel pressure is rather high. I believe a stock GSR is around the mid 40's psi. Is it possible you're flooding the engine with too much fuel? Try starting it with 100% throttle when you turn the key to 'start' to balance out with more air.

 

37psi- 45ish psi i believe

although my gsr is running fine with 35psi.

 

Im in on this too.. its a motor that TahitianEG and I are working on.

Yah, I thought the Fuel Fressure was high. Its running a stock FPR and stock P30 ECU, so im not sure why its showing 60lbs right now?!?!..

Hmm..

And an FYI:
Its a:
93Si
95 Del Sol Vtec Engine Harness
95 GSR motor w/ skunk 2 manifold
obd1 JDM p30 ECU.

Im picking up a bottle of carb cleaner on the way home tonight to give it a little juice to see if its just starving for fuel. Maybe were getting fuel to the rail and not through the injectors.??

Ill also try it with some pedal to see if it needs more air.

Thanks for the help

 

Aside from too much fuel pressure, what does your timing (belt) look like?

 

Timing belt is new, and assembled when the motor was out of the car. Timed it with my timing light earlier today, and timing is right on.

Ive got a question:
When my buddy pulled the plug wires out and put the screwdriver in to test spark while I cranked it... the spark looked kind of orange'ish.

Is that a tell tale sign of a bad ground? Should the spark be a purplish?

 

if you have a light tester or 12v light you can put it in one of the injector harness side plug and as you turn over the motor it will ground out and you should see the light pulse as the injector is opening and closing. and if you havent yet then need to make sure that you have 12v constant going to the injectors. but I know you already know but spark, fuel, compression and you know you have spark and can easily find out about compression. and get it down to a fuel problem so you can concentrate on that. good luck man.

 

I wasnt talking about your ignition timing... Is the crank tdc aligned properly with the cams

Spark needs to beel white/blue. check/replace your coil

 

so it sounds like it has no compression? i would recheck your timing make sure you dont have a cam in upside down. or heaven forbid some bent valves..

 

also try checking ur distributor and check in ur injectors r clogged with fuel..it can happened..it had to my buddies b16 turbo..

 

How long did you crank it for? Crank it for like 15 seconds continuously and see if you are getting and distributor codes. The injectors fire off the TDC sensor and if thats bad, its not going to start. Dist codes take a while of cranking to show up however.

 

make sure ur firing order is right. for the dizzy to the cylenders. people get that mix up. i do it all the time. it will show spark but if it aint in the right order it will never start or will miss fire real bad. i done it before. see if that helps. look for the firing order on h-t it should be here some where. i got a gsr in my eg too and i had my wires cross and it didnt start. when i put them in place it started right up.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pdiggitydogg &raquo;</TD></TR><TR><TD CLASS="quote">I wasnt talking about your ignition timing... Is the crank tdc aligned properly with the cams

Spark needs to beel white/blue. check/replace your coil</TD></TR></TABLE>

I knew thats what you meant.. yes timing is perfect. Crank and Cams line up perfect. Timing is set at 16 degrees.

I will double check the spark tonight. Thx.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gsrhatch2356 &raquo;</TD></TR><TR><TD CLASS="quote">if you have a light tester or 12v light you can put it in one of the injector harness side plug and as you turn over the motor it will ground out and you should see the light pulse as the injector is opening and closing. and if you havent yet then need to make sure that you have 12v constant going to the injectors. but I know you already know but spark, fuel, compression and you know you have spark and can easily find out about compression. and get it down to a fuel problem so you can concentrate on that. good luck man.</TD></TR></TABLE>

Hmm.. didnt know what. Makes it a lot easier and less messy than taking the fuel rail off with injectors and watch them spray into a bucket. I will try that also. Thx.


And to put out all doubt, I did a compression test last night. All cylinders are good within 4 lbs of each other.

Plug wires was a no brainer. They are fine.

I need a day off work so I can work on it during the day...

 

or a shop of yourown. lol. that s2 manifold kinda messed things up on my gsr aswell. it eliminated vacuum lines and whatnot. you should be able to run a p72 huh? im not sure im obd2.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blk00EJ8 &raquo;</TD></TR><TR><TD CLASS="quote">
What do you mean a P30 wire harness? The ECU is P30, the harness should correspond to the vehicle with some sort of an OBD distinction (1, 2a, 2b, etc). Try running the P72 anyway, as I believe it doesn't "look for" the butterfly's solenoid (in other words throw a code); it's just a dumb pin that sends an on/off to the solenoid.
</TD></TR></TABLE>
Well, I do think you have issues running a manifold without the secondary butterflies and then running a p72 ecu.. a USDM p72 at least. My buddy was running that ecu without the butterflies in the mani and he had bogging issues, and if I remember correctly a CEL.

Either way, I have a USDM p30, a JDM p30, and a USDM p72 to try on this motor, so ill be able get real evidence then.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mastakmk &raquo;</TD></TR><TR><TD CLASS="quote">or a shop of yourown. lol. that s2 manifold kinda messed things up on my gsr aswell. it eliminated vacuum lines and whatnot. you should be able to run a p72 huh? im not sure im obd2.</TD></TR></TABLE>
The only issue with vaccum is the S2 manifold doesnt have a mounting space for the IAB solenoid. So I mounted made a small bracket out of a simpson strong tie from Home Depot for the sensor and mounted it on one of the 10mm bolts coming out of the firewall that the brakes lines mount to. Its out of the way, it works, and theres no issue or CEL.


.. going home to work on it tonight. So we'll see what happens next.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mastakmk &raquo;</TD></TR><TR><TD CLASS="quote">that s2 manifold kinda messed things up on my gsr aswell. it eliminated vacuum lines and whatnot. you should be able to run a p72 huh? im not sure im obd2.</TD></TR></TABLE>

The manifold didn't eliminate the vac lines... you did since you installed it. And yes, you can run a p72 with the Skunk2 mani on a GSR -- I'm doing it with no problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EgSalad &raquo;</TD></TR><TR><TD CLASS="quote">
Well, I do think you have issues running a manifold without the secondary butterflies and then running a p72 ecu.. a USDM p72 at least. My buddy was running that ecu without the butterflies in the mani and he had bogging issues, and if I remember correctly a CEL.</TD></TR></TABLE>

Skunk2 P72 Intake Manifold Install (click)

Take a look at the bottom under "Additional Information." Additionally, the P72 has only one pinout for the IABs (B-16 for OBD2b, A-26 for OBD2a) so it would have no knowledge of it being disconnected. Your buddy must have messed up another pin...