can i plug vaccume lines on f134 hurricane

Do i need vacume lines hooked up for my f134 to run im not using vacume wipers so i was wondering If I could plug them

 

I suppose that you are referring to the 2 tubes going into the lower chamber of the fuel / vacuum pump.
The lower outermost tube should connect into the PCV system.
The lower innermost tube normally goes to the wipers but it may be plugged off.

 

I have my wiper ones plugged off. You should keep the other one hooked up

 

"You should keep the other one hooked up."

Why?

 

Ok so the line that Goes in to the pcv valve on the fuel pump side of the engine I should hook that up and plug the wiper line what about the vacume port that is above the distro

 

The vacuum pump on the bottom of the fuel pump generates vacuum each time the engine turns. You don't want to stop that, so you leave that connected to the PCV system. The other side of the vacuum pump is connected to the wipers --- you can disconnect and plug that hose.

 

It's been many years since I tore into one of these systems so I may be confused. BUT...

It is my understanding that the PCV side of the system gets it's vacuum from the intake manifold, not the from the pump. Thus venting the crankcase. It tee-d to the vacuum pump also to supplement the pump vacuum at the wipers, That is to say, the pump and the manifold vacuum worked together in tandem operating the wipers. Therefore the line you suggest leaving connected is "output" from the pump (not vacuum) and does nothing if the wiper side is capped. Or indeed if the wipers are "off" as they normally would be.

BTW, the pump does not necessarily generate vacuum on every engine revolution, as I remember. Once full vacuum is obtained, holding the diaphragm against the spring pressure, I think the rod-to-arm connection remains slack until more vacuum is demanded. IIRC.

I see no reason that both lines cannot be disconnected. Just plug the PCV tee (to the pump side) also. Keep the PCV plumbed to the intake manifold vacuum port under the distributor.

 

hey Ecronk,
If you are thinking about yanking out vacuum wiper gear I might be interested, hoses and all. I want to get my vacuum wiper going again, so remove carefully and let me know what you have!

 

thanks for all your help and I think the t area is a vacuum and pcv coming together so as long as I hook up pcv I should be good any way im going to attempt to start the engine on Sunday so ill let you know how it works out and the only reason im worried about the vacuum was I herd it runs rough with out it hooked up

 

Mine has no vacuum hoses on either of the two hose connections on the bottom of the fuel pump and have no problems.

 

really ok cool but what about the ports in the block and head did you just plug those up

 

,,

 

Good question, mine came to me this way, and I redid the top end of the motor recently, I don't even know where the ports are? There are vacuum wiper motor ports on the motor?

I thought it was strictly activated by the fuel pump. Can you post a pic or two of your setup?

 

The vacuum hardline runs from the port under the carb, across the front of the engine with the fuel line from the pump to the pcv valve on the side cover for the exhaust valves. There is a T located just above the fuel pump, and you can cap the portion that goes to the pump. Guys like me that have a pump without the chamber for vacuum boost have this arrangement. I use the capped portion to hook up my vacuum guage for testing.

 

"I use the capped portion to hook up my vacuum guage for testing."

The readings you get would depend in part on the state of the PCV valve, I would think. I'd prefer to test directly at the manifold port.

 

Yeah, probably. You have to use a damper, also. But then I used it on my 1978 Goldwing and had to use a damper there also, so no big deal.