Vacuum Line Question

[bigdan002001]

Hey guys, I have been working on my 4.0L and installed the new fuel rail green paper gasket from Ford since I have the 97 model. I was reinstalling the fuel rail and hooking back up the vacuum line on the fuel pressure regulator when I noticed that where it y's off to the passengers side firewall, it all just fell apart! Upon closer inspection it is a smal plastic vacuum line with the larger rubber tips that plug into the splitter at the intake and it plugs into the black ball on the inner fender (A/C vacuum resevoir). So some idiot decided to just stick a big ass rubber hose over the rubber ends to hide the fact that the plastic line inside was broken...so obviously I am getting a major vacuum leak here. Question is, can I just replace this vacuum line with a solid rubber vacuum line the size of the ends? Or do I have to try to go to dealer and get the tiny plastic hose with larger rubber ends?

Thanks,
BigDan

 

[kevinsranger]

Hey guys, I have been working on my 4.0L and installed the new fuel rail green paper gasket from Ford since I have the 97 model. I was reinstalling the fuel rail and hooking back up the vacuum line on the fuel pressure regulator when I noticed that where it y's off to the passengers side firewall, it all just fell apart! Upon closer inspection it is a smal plastic vacuum line with the larger rubber tips that plug into the splitter at the intake and it plugs into the black ball on the inner fender (A/C vacuum resevoir). So some idiot decided to just stick a big ass rubber hose over the rubber ends to hide the fact that the plastic line inside was broken...so obviously I am getting a major vacuum leak here. Question is, can I just replace this vacuum line with a solid rubber vacuum line the size of the ends? Or do I have to try to go to dealer and get the tiny plastic hose with larger rubber ends?

Thanks,
BigDan

just replace it with suitable hose, as long as there is no check valves in place, but even them you can use with the right size hose

 

[bigdan002001]

Thanks, that's what I thought, but just wanted to make sure that by changing to a larger main hose size that I wasn't going to mess up the vacuum pressure and screw up the vacuum. Cause with that tiny little plastic line that's there now...the vacuum should be relatively high, but once a larger hose is installed vacuum pressure will drop some...and the check valve as far as I know is inside the black ball on fire wall...cause the other hose that comes back out of it goes to the heater control box for the vacuum switchover door.

BigDan