Hello guys im talking about those emmision looking cylinders that connect vacumm hoses together by the throttle body on the upper inatke manifold. I had 2 of them one coming from the top of the throttle body and one coming from the bottom unfortunatly while cleaning the throttle body the bottom one broke off one side of its nipple. I dont have emmisions but as off right now im just run a vacuum line directly instead of have two vaccum lines connected to this little green and black plastic cylinder with an arrow on it. the one that connects on top of teh throlwe body i still have it connected. Thanx again guys. Will my car run like crap or experience a vacuum leak with out thsi cylinder? or should i cap the metal nipples intead of connecting them with avacuum? please let me know thanx

 

bump

 

Bump!

 

It won't hurt to remove them if you're not running emmissions.. If you're concerned about it, though, you can pick up a vacuum check valve for pennies at an auto parts store. It sounds like you have the two sides directly connected with a vacuum tube right now, that's fine also..

It won't affect your proformance to run without one, as long as your vacuum tube is solid, you'll have no problems.. you know how sensetive they are to vacuum leaks, though I capped mine, just because it's that much easier

 

It's funny how so many people assume every vac line on the engine must be something to do with emission controls...

Those check valves on the TB are part of the double throttle system. They are nothing to do with the emission controls. Without the check valve the system simply won't work, so you might as well remove the vac line and cap the nipples.

 

hi ya WonkoTheSanehavent seen you for a while

 

That is a check valve. It is to keep the vacuum going one way and yes you need it. They are brittle after being in the heat of the motor for so long. That mistake will cost you dearly at Mazda. The White and green ones were $32. I am not sure about the larger black and green ones. They are on Fords as well. You need to hunt at the junkyard and save a huge amount especially if you pocket the damn thing. Just look around Fords, Mercury's and Mazda's of any of the small engines. inline 4s V6s etc.

 

you might as well remove the vac line and cap the nipples.[/QUOTE]

Heh, he said nipples...

 

I swear this forum is getting worse each and every day. Since you have a non-turbo, according to your profile, AND I trust not a automatic transmission car, then the green/white valve that runs from the water thermo valve to the double throttle diaphram is......THE DELAY VALVE. It ain't no check valve. That's a small but very important distinction! Gotcha.

 

Ok, Take my entire paragraph and re-write it with the exception of

1. check valve=replace with Delay valve
2. Vacuum going one way=raplace with Vacuum delay

The "rest" of the information I gave is still correct and should be followed. How is the guy injured from calling a check valve (industry slang) vs. calling it a delay valve?? He still needs it. It's still going to be pricey as hell. It's still going to be found in Junkyards on the makes I listed.

Getting hung up on symantics used in the reply is not any where near as bad or no info at all. Let me give you an example to pondor as you grow in this world. Jimmy Carter sat in the oval office correcting the grammar on his staffs memos while the country was going to hell, Marines were dying in Iran and Americans were starving. What in the hell was he thinking?? How does bad grammer/spelling/symantics change the message?? How does this affect you, you may ask?? Don't sweat the small stuff, open your eyes to the big picture.

I don't mind being corrected, its the best way to learn something new. The derogatory remarks are not needed as people are just trying to help others.

The whole damn forum is in the garbage now!

 

Because a check valve does not work like the delay valve.

The remark was aimed at a fellow who lives on a spot of land near the Tazmainian Sea.

And if it was the delay valve that he is wondering about, he might check and make sure the double throttle diaphram is intact/working before considering buying a DELAY VALVE.

 

BUT, if he has two of them on the throttle body, it sounds like he has an automatic. Am I correct Peruvianrx7? In that case, one is a delay valve, and one is a check valve. Oh, wait... no. The AT has three green and black thingies on the throttle body. Two different delay valves, and a check valve. Either way, if you want your RX-7 to respond as stock, replace the broken part. If you havn't done it, I recommend replacing all of the vaccuum hoses as well. 20ft of the stuff should cover it.

 

Oh......nevermind

I think the valve is broken (physically) look at the picture and you'll notice that the stem is not there. This happened to me just last week as I was replacing vac lines. The stem just snaps off very easily when you try to twist the vac line off.

 

IF the engine is a n/a, you /he, won't miss it. Just plug the vacuum line. The outboard secondary plates are spring loaded full open on a non-turbo and you'd be the exception if the double throttle diaphram was anygood anyhow. I've never seen a good one yet.

 

No Kidding. I just found out that all mine's good for is a huge vaccuum leak. I'm just gonna do the TB mod since the plates are doing nothing but getting in the way any way.

 

tecknomage - Hi! yeah, I've been rather busy with that annoying persistant real life... stupid thing How have you been?

Hailers - I think I gave wrong information, then.. If he's running Automatic, it must be different? It looked like a check valve, I had one of the two break apart on me, I just got rid of it, as I was taking off all of the emmissions and double throttle stuff anyway, I did the whole package of emmissions removal, I think off of Kevin Landers' site... but it might have been ReTed's.. I don't remember..

 

[QUOTE=WonkoTheSane]tecknomage - Hi! yeah, I've been rather busy with that annoying persistant real life... stupid thing How have you been?

Hailers - I think I gave wrong information, then.. If he's running Automatic, it must be different? It looked like a check valve, I had one of the two break apart on me, I just got rid of it, as I was taking off all of the emmissions and double throttle stuff anyway, I did the whole package of emmissions removal, I think off of Kevin Landers' site... but it might have been ReTed's.. I don't remember..[/QUOTE

If he has a automatic, the one that goes straight down would be a checkvalve.
Goes to some lockup device on a automatic.

 

I stand corrected by the Texan smarty-pants, even though his geography sucks (it's the Tasman Sea).

 

I own a non turbo, 5 speed manual. SO i guess I dont need it. When I bought the car I believe i only had oen fo these check valves or whatever thye are called after i send it to the mechanic i guess he installed another one? regardless Ill try to get a another oen from a junkyard. thanx guys