mrhot2000

well i started a thread few days ago on replacing the fuel filter and succesfully replaced it around yesterday i think. First i was suffering from hesitation at 5k rpm but yesterday all of the sudden the car was having troubles even to idle and running on low revs and if i reved the car it would back fire and was giving lots of black smoke so i opened the hood and could hear a air leaking sound and in sometime i found the culprit its a one way vacuam vavle broken i have taken it out and send to the dealer for a reaplcemt as i didnt know the part number can anyone give me details on the pipes here.


in one picture i have labeled the pipe sucking if i put a finger in front of it the car stabalized and smoke stops. I had a similar problem some time ago when my pipe connected to the map sensor got disconnected some how can some explain a little on vacuam pipes in the rx7 and are there any more pipes i should check ?? that makes the engine hesitate while reving while driving.

THanks in advance

superfastrx7

Look a this web site
http://www.maxcooper.com/rx7/how-to/...als/index.html
You will see a Mazda part number.
Most of us are using viton check valves.... pretty much any check valve will do the job.

mrhot2000

but what is that vacuam pipe for ?? what does it connect to infact what does all three of these pipes do please anyone

telum01

if i'm looking at it correctly, the one you said is sucking goes into the intake manifold (obviously) in one direction, and back to both the vacuum chamber and the turbo charge control solenoid (the metal line it goes to splits).

mrhot2000

yss it goes to the back of the intake manifold but wondering what it does and what happends when its not connected

DaleClark

iTrader: (55)

Doesn't really matter what it's for - a vacuum leak after the throttle body will give all sorts of driving/running problems, and it needs to be fixed.

If you want a set of the Viton valves, I've got plenty in stock, and I ship overseas. You can get a full set shipped for less than 1 new Mazda check valve. Here's more info -

http://www.clubrx.org/default.asp?id...ntent=26&mnu=8

Dale

mrhot2000

Well i had the check vavle replaced by stock item but now i have come up with a new problem car idle is jumping between 1 and 1.5k rpm but when lights turned on it stablizes at 1.5k rpm where i have adjusted with the adjuster screw. while driving after second gear there is hesitation at around 6k rpm. car is type rb touring. Desperate for help

Thanx In advance

wstrohm

Here is a link to a thread containing the vacuum hose diagram.