It's a 93integra that had a b16 vtec engine go bad. I swapped in a jdm b20b p8r head.

Had it fired up a few weeks ago and it ran realllllyyyy rough.

Ls IM on b20 currently
B16 injectors and rail on it.

When I originally had it running it was with the b20 dist. Wired into 1pc harness to match my wire harness

Now my brother has a different dist. on the motor and it only cranks and sounds like it could start but doesn't.

I've got spark at dizzy, fuel to regulator, and some air. What am I doing wrong?

Thanks in advance,
Mike

 

I suggest you check your wiring on the distributor.

 

So I've got it fired up now with an un molested distributor.
Swapped on b20 injectors too

Doesn't idle right, exhaust pipe pulls and pushed air out

Doesn't respond to throttle

Still on a b16 vtec ecu.

Reused some b16 Intakke parts on the b20 also...

 

Timing is wrong?

 

Wish this was known. Its not recommended but hey you're ride...


Check your tps and map sensor is not plugged in incorrectly, check tps is within range, check map sensor is not incorrectly giving wrong data to ecu by checking to see outputting the correct voltage at idle.

 

I dont think a B16 vtec ecu will run the engine correct get the correct ecu at least.

 

I have an Ls ecu I will try today( in my other car)

I noticed the fuel pressure gauge sits around 40 psi at idle and drops when giving it gas (to around 32psi)

It's got a FITV and currently no coolant in system (I don't run the motor for more than minute like that)

I'm a little confused where the FITV lines run.

Checking tps and map sensor and IACV today.

Will link videos shortly/ pics

 

I think timing is wrong but ii mm not sure how tset/ check it. Turning it on motor seems to make no difference, how can I verify the timing on the dizzy is in sync with my motors physical position????!?

 

Here's some video
Start up and idle https://youtu.be/7ofc3HiUot8

And this is how the exhaust sounds
https://youtu.be/oXmksD9BYBg

 

Tried the LS ecu (obd1) and it just revs to about 5k and wants to stay there.

Update: its an obd0 IM.

Haven't been able to check my tps/ map

Replaced dist. Cap and rotor (it wasn't getting spark to all wires, now it is)

IACV has been cleaned prior to install.

 

Also there are currently no O2 sensors hooked up

 

This whole thread is like, "hey my car runs like **** what's up?"

people answer

"Oh BTW I'm using the wrong ECU."

people answer

"Oh BTW I'm not using an O2 sensor so even if everything was working right the ECU is just guessing about how much gas to give the engine."

Is there anything else you left out? Trying to troubleshoot stuff when the swap isn't even done is a waste of everyone's time.

 

Exactly!

 

I know, its just rediculous how people want online help but don't give details.

Since the car has start than you know what the issue is. Now you have to chase down a vacuum leak.

 

Why you doing these retarded things, you're using the stock ecu and you didn't plug in the o2 sensor?

 

I been thinking about his b16 ecu all week lol