Okay guys, this is for all you who have the ea82 mpfi engines, or if you just know.

So I changed out the engine in my 88 Rx to an ea81 for now, ej coming later. 

 

The question is: Right under my master cylinder, on the want-to-be frame rail, I have a hose that I believe went to one of the connections on the fuel injected fuel rail.

 

Can one of you guys look on your car and tell what that goes to? I have mine plugged right now and I am wondering if it should be or not. I have been having problems with my weber flooding with excess pressure when I shut her off and I notice that I have pressure at the gas cap when I open her up. 

 

Yes I have the right fuel pump, I put the brat's I had into her. I am thinking maybe I need that line to be vented or I don't know. I just hate having lines plugged to nothing and I want to know. I cant find anything in the manuals with a pic. But it is right under the master cylinder and it has enough line as if it came to the top of the motor.

 

Any advice???? Thx guys. Without each other and this site we would be so frustrated. 

Was there a check valve you forgot about?

I may have, but explain it to me. To be honest, not sure what that does.

Post a pic so we know what hose your talking about. There are only 3 hoses fuel supply, return, and fuel vapor.

Fuel vapor line, went to the charcoal canister. It also lets the tank breath, so you need to unplug it.

Fuel vapor line, went to the charcoal canister. It also lets the tank breath, so you need to unplug it.

 

This, +1

Cool. Thx. I will take a pic so you guys and I know for sure, but that makes total sense now.

 

So just leave the vapor line unplugged? It will be fine???

Edited January 31, 20179 yr by Naked Buell

That line is roughly 1/4", so a fuel filter for a riding lawn mower and a length of hose would work to let the tank breath and keep debris out.