I have a jdm b16a engine and im having fuel issues. Im going to be changing the vtec solenoid and i was wondering if theres a difference between sohc & dohc solenoids. Also is there a difference between usdm and jdm solenoid as well. Any help would be appreciated.

 

what does your solenoid have to do with the fuel issue, and what is the fuel issue?

i've read discussions on solenoids and it seems that many interchange, which i don't know. And, there is no functional difference between any of them. if it bolts up, it probably would work fine. that said, you're still better off getting the right one for your engine.

 

Alright let me start over. I have a jdm obdo b16a in my 91 civic sedan that i converted to obd1. The car is throwing up 2 codes that i have problem trying to fix, which are codes 10 & 22. So for one of the problems i want to try replacing solenoid so that the code 22 goes away. I heard of people bypassing the vtec pressure switch by running a wire from a4 to d6 on the ecu wire harness which i tried and it didnt do anything diffrent at all. So thats the first problem im trying to fix. The second part is the fuel problem. I have a benen fuel rail,precission 310cc injectors,190lph fuel pump, & blox adjustable fuel pressure regulator so all the parts are new. The problem is the fuel pressure flucatuates all the time going from 40psi all the way down to 5psi then back up again its always moving around which affects when i try to give it power when trying to go around the block. It usually starts to do this when the car gets to operating temperture. The engine has all new parts,tried diffrent ecu,diffrent fuel pressure,tried with & without resistor box,reset ecu and nothing still have problem. Help Please.

 

do you still have any of the stock fuel components that were originally on the motor?

if you do have any of them i would suggest swapping one at a time with the aftermarket parts to see if anything changes. i only mention that because it would be free (only take a few minutes of your time) to try it out if you still had the old stuff.

beyond that i don't have any diagnostic help at the moment. hopefully someone else with more specific knowledge can help.

 

Thats the next step i was thinking of doing. I dont have any of the stock parts though. Was wondering if i could change some of the parts to obdo. The alternator,ecu,ecu jumper harness,engine wire harness,& distributer are obd1. I wanted to change the injector clips,injectors and resistor box to obdo to see if that fixs the problem. Im not sure if that would work or if possible to do, do you know?Or do i have to use obd1 injectors? If i was going to use obd1 injectors what year cars would they have to be off? not sure any advice would help since im stumped at this point its been like this for over two months now.