Posted before with some help identifying some parts to solve issues, now i am to the point where i believe everything is set up properly, but i had to kinda piece this engine together so i am wondering if maybe my throttle body or intake manifold are causing my no start issue, or even the fuel injectors or ecu.

Ive verified it is getting spark when turning over td81u distributor with a jumper harness. i think its getting fuel as its popped and backfired a couple times but im not 100% because i removed a couple plugs and i couldnt really smell any gas and the plugs werent wet.

Pictures are worth a thousand words so im gonna post some pics to see if anyone can identify these parts and tell me something like yeah that intake manifold wont work with a b20 vtec or really any imput would be helpful, im at the point where ive searched here and google and im not really finding any answers to my questions.

The two ecus pm6 and pr4 ive tried im wondering if they will run the engine as well, i figured my p28 got fried somehow because when i hook it up the fuel pump doesnt prime but it did when i first tried it, but anyways will either of these ecus "run" the engine, im not looking to drive it or anything at this point, my main concern is getting the damn thing to start and run even if its poorly, then i can finish all the other things i have left to install on the car.

Like i said i pieced together this engine, started with the b20 block, got a b16 head with the stock b16 camshafts. distributor i ordered found out it was the wrong obd so i got a jumper after researching that it would work fine. Using a rail that was given to me, also fuel injectors that a buddy gave me, supposed to be 345cc prelude injectors, the resistor box is still installed. I didnt have a throttle body or intake manifold so i got those from a friend as well, no idea what they came off hence the pictures so im hoping someone can tell me.

Any help would be awesome, been messing with this damn car for almost 6 years off and on and hopefully i can get it started sometime soon.

 

That line from the valve cover does not go to the intake manifold, I think.
Where is your vacuum line from the fuel pressure regulator going?

I'd double check everything with someone who knows how everything should be hooked up.

 

Yeah thats another issue, ive looked up so many pictures trying to match the vacuum lines to where they need to be, but none of the pics ive seen had a setup exactly like mine so its been difficult

But to answer your question that vacuum line is going from an outlet on the backside of the intake manifold then to the fuel pressure regulator.

 

check all your ground wires

 

Grounds are all good. Everything works, it turns over, the pump primes and ive verified spark on all 4 cylinders. It just won't actually start, last time I tried it popped a couple times then started making this weird warbling sound like liquid trapped in a small space. Idk if ecu is a problem or wrong injectors, from what I've read both should work with engine albeit poorly but I'm just trying to get it to start, then get p28 with hondata and set everything else up.

 

Agreed.
That line should run from the valve cover to the intake arm. - connecting before the throttle body, not after.
As it is now, you have created a pretty big intake manifold leak.

I think the port on the intake manifold should be connected to the PCV.
B20 has this located on the valve cover.


so you'll need to try fitting a B20 valve cover on you engine or do mod like one found in this post
https://honda-tech.com/forums/honda-...setup-2929224/

Looks like a 1st gen B16 manifold? The top port that you have capped off goes to a dashpot diaphragm for cold startup. It's ok to keep that capped off.


Do you have a pic of everything hooked up?
I want to see your spark plug wire order

 

so many potentials here... is the car timed correctly? Meaning was the timing belt put on correctly - is the bottom end top dead center correct for #1 cylinder TDC? is the ignition timed correctly (both in degrees rotation AND as 4drEF pointed out in firing order)? what OBD is the car running (wired for) and is that wiring done correctly? why haven't you at least used a noid light to test that the injectors are firing (or rather being commanded to fire)? If no noid light, then pull injectors out and watch them actually spray.

 

Looks like you've got some good responses. You must have 3 things to fire your engine. Spark, compression, fuel. If you have all of these then most likely your timing is off. What chassis do you have? Which computer are you running. Put the crank at TDC and take a picture of the cam gears. Did you tension the t-belt correctly? Firing order needs to be right too. 1,3,4,2 . The distro also needs to be solid. No loose rotor and fresh cap. As far as the valve cover line that should to the intake pipe before the throttle body. The big line on the manifold should go to your PCV valve. Do you have a check engine light on? If so what is the code?

 

So much info thanks everyone! I'm gonna work on getting the pcv valve cover issue sorted. Vehicle is 89 civic Hatchback std.

I'll post pics of firing order tonight, but I just went off of Google images for b20 firing order.

Ecus I've tried are p28 with a jumper harness and I believe that ecu is fried now, dunno what happened but fuel pump doesn't prime with the p28 hooked up, the two other Ecus I've tried is a pr4 and pm6 both prime the pump but engine still doesn't start.

Engine harness is stock obd0 but I have jumper harness for the td81u distributor (obd2).

Injectors are obd1 345cc prelude injectors, the injector harness was wired for multipoint and still has resistor box, the injectors themselves had little ridges in the connectors I ground down with a tiny file so the connectors on the harness plug in correctly.

I assembled the head onto the block and made sure the cams were aligned correctly with the bottom block for tdc, Google was my friend lol.

The distributor I installed is pretty much in the middle, I haven't tried to rotate it yet for timing as I figured even if not timed perfectly it would still start and maybe run poorly, but I will look at that tonight when I post pictures.

Also I will try to see if injectors are spraying tonight as well.

 

Here's the two request pictures. The one of the cams I have both cams in the up position and the two end cylinders are all the way to the top, cylinder 1 and 4 I believe.

Second picture hopefully you can see how I have the firing order, like I said it's from Google images when you search b20 firing order

 

let the valve cover vent and cap that end on the manifold.
See if it starts like that?
Do yo have a pcv valve in place?

You essentially have a massive vacuum leak.
causing it to run so lean it's dying.

 

So 1 and 4 come up at the same time, but the valves on #1 only will be fully closed (both intake and exhaust lobes will be pointed up) when the engine is at #1 TDC, make sure the crank alignment mark is where it needs to be relative to the timing belt cover and that the cam lobes on #1 cylinder are in fact pointing away from the cylinder (up).

I know this seems basic, but it is an engine cobbled together from google images apparently instead of the appropriate Helm's Factory Service Manuals.

Same goes for the wiring... didn't you wonder why the P28 fried? I would investigate why that went badly.

I only say this because it could be the root cause of your starting issues, besides the valve cover vent being directly tied to the intake manifold...

I figure that would already have been corrected, or at least vetted as NOT the root cause. All you have to do is unplug and cap, or pinch off with vise-grips and try to start.

 

Finally I got it fired up! Last night when I took pictures I verified spark again and fuel was good I could see fuel on the pistons when I took the plugs out, took that line off the valve cover left the valve cover opening exposed and used vice grips to clamp that line from the intake manifold closed.

The real issue was the firing order, I had it set

4321 with the distributor being to the left of cylinder 4 but mine is actually 1234.

Switched firing order and it fired right up, seems to run pretty good too everything considered.
Now I'll work on getting everything else set up.

About the p28 yes I was concerned about what happened, is there anyway to test it to find out exactly what happened? All I can say is it primed the pump with the p28 and the next day it didn't, between then nothing changed I didn't move anything or change anything so idk.
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