Check out the following info. about plugging the black vac. line.

http://www.srtforums.com/forums/showthread.php?t=150150

then consider the following excerpt from the middle of the thread.:

Quote:Originally Posted by srt stretch
being that its been said this line helps make vaccum for hte fuel system, with it plugged could that be a reason in why people have hard start ups? kinda made me think, i could be absolutly wrong jus thought id ask to see if anyone knew if this could be a cause for it

Quote:
Originally Posted by posthondaremoval

I am bumping this response because it is the same question I was going to ask. Mine is/has been capped, and I am now thinking about uncapping it. Anyone knowledgable want to opine on this?

Dale, Ghls, DR...?


Anyone on this forum have any thoughts about this?
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brotha... i read 5 pages of that story.. between lunchbox & superstrongbeast arguments, ( and the other tinkers) stongbeast im leaning more towards too. Glhs even brought a good point as well: "One thing you guys are missing is that the vacuum ejector generates the vacuum as the boost pressure passes through it. As I said before, look up venturi effect

"Â¥"ejector" tees, which use boost pressure to generate "venturi vacuum" (for cruise control and evaporator purge while the engine is in boost and there's no manifold vacuum).

so removing what looks like a tee is actually removing vac from theses parts, one of which looks like it's aprt of the rollover shutoff system".

From here, way down by the Dodge vehicles section.

http://www.motor.com/MAGAZINE/Articles/112002_07.htm
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Quote:
Originally Posted by UncleMunz




{ ummm....
not to start a fight, but if that "NO" list told me the best thing for my car was to stick a banana in my a$$ and jump into the gorilla cage at the zoo before driving it, I'd seriously have to consider it.}

Still Post, other claim they still plugged up there (3/8) intake boot and havent had any issues. Still i have to do my own search on that.

 

POOR BANANA.

MIne has been plugged for 8-10 months and I have had no problems. I am leaning towards re-attaching the line and dealing with the lb. or so leak the line generates; especially after hearing posts from real knowledgable people.

I would love to hear if there could be a link between plugging the line and the hard starts. It would clear up an issue that has been confusing many people for over a year.

 

have you been having the hard start for the same length of time since you plugged it?

 

No - more since spring/summer. But last summer (when the car was new) I had no issue with hard starts, and the line was hoooked up.

 

Maybe that's it... need to hook back-up the line

 

I was hoping, but I have it straight from one of the guys who helped design this engine and it doesn't sound like the plugged line is the problem. His is an opinion I definitely respect. As he said.:

Not likely an effect of this mod. If the car sits for a while the pressure inside and outside the tank should equalize. This ejector tee we've been talking about is really for evacuating fuel vapor when it sloshes around in the tank...

I said it's not likely because when the car is off, the fuel is not getting sloshed around (causing higher vapor pressure) and the fuel level in the tank is not changing due to consumption.... So in other words, capping this line does not likely change the way the fuel vapor pressure equalizes when the car is turned off. (the purge harness is not controlling vapor pressure when the car is off.)

The ejector tee and purge harness discussion is totally valid - there is no contradiction.... Capping the black line that reads pressure from the turbo scroll prevents the ejector tee from functioning.... The ejector tee provides vacuum to the purge harness to control the vapor pressure in the tank while the car is running and fuel is sloshing around and being consumed.


My response:
I am probably going to hook it back up, though, as they have also assured me that it is also an important part of the fuel delivery system, and haveing it plugged is probably not a good thing.

If the problem goes away I'll be happy, but It should be hooked up anyway.


As discussed many times, it's probably just the seasonal fuel blend. Would've been nice to find a solution, though.

 

I would like to hear the outcome on that...

 

Hopefully I can find time this weekend - I'll let u know my findings.