hey okay i am new to honda tech but not new to swaps. i have done alot of swaps and i know that there is always some issues but i am having a hell of a time with this h22 swap on this accord. my buddy bought a h22 motor from a friend and we swapped his f22 because he blew it up. i have the h22 in the car all the wiring is done. vtec is pinned and everything. but the car wont start. i ordered a new distributor for it and everything i got the car to start and run on the f22 injectors but i know as well as anyone there is a cc difference between h22 injectors and f22 injectors. same harness and everything just changing injectors to the proper h22 injectors it wont start anyone have any ideas thanks

 

check thermostat housing ground

 

What kind of h22 is it? what year car is it from?

 

i checked the termostat ground. It is grounded but the ground isnt the right gage. but like i said i will run on the f22 injectors but it wont run on the h22 injectors. and it is a h22a1 i think and not sure what ur it is out of. my buddy had it in a hatch before he flipped that and sold it to another friend of mine which it is now in an accord

 

first off, what ecu you running?
are you running a resistor box which I think you are.
reason being it runs with f22 injectors and not h inj.
are the h22 injectors and motor obd2?
is the ecu obd2?
you may have obd2 h inj which require 12v power, which would in turn eliminate the resistor box.

find out exactly the equipment your using and get back.

 

running a p13 obd1 computer that it was running on in the hatch and i think you are right i will ride over and check to see of he is still trying to run the resistor box.

 

maybe be a h22a i dont remember

 

its is a h22a black top.

 

There's no ground on the t-stat housing at all on the H22s. That's all B-Series and F22Ax engines. You should have this ground bolted to the IM like so:



This ground comes out from the engine harness. You can't add your own ground, because it goes all the way back to the ECU. If it's not hooked up or just finger tight, it will not create spark. My intake mani is different from yours, because I have a Euro R mani. But, it should be bolted down on that side.

 

Actually the 4th gen accords and preludes both have the thermostat housing ground. It's the 5th gen accords that don't...hence the location of that one.

 

if you want to run h injectors, delete the resistor box.

 

let us know the outcome!

 

No, you don't. I'm still have my resistor box when I had my stock H injectors. And I have a '94 Accord EX.

 

accords and 96-down preludes all use a resistor box

 

you must be running obd1 h injectors. op must have obd2 h injectors. perhaps I should have explained it better.

 

the '96 prelude which is also obd2 actually uses "obd1" injectors too...it's not really an obd1 vs obd2 thing

 

forget about obd type. its about low impedance or high impedance. if it runs with f22 injectors its suggests he is running a resistor box. the h22a black tops I seen where obd2. like I said above before if you all read, if the h injectors are obd2 they do not need resistor box...but like holmes said above, except if you happen to have 96 h22a injectors.

 

Correct, if the H22 injector he put in are the 290cc saturated ones, that could be why the car won't run. He needs the peak N hold 350cc injectors.