Pcv hoses??
Thread Starter
Joined: Feb 2005
Posts: 2,720
Likes: 6
From: Mckinney Plano Frisco
Pcv hoses?? I recently got my formula back however it was missing all pcv hoses and was having a rough time starting. It's a 98 with a a4 swap and a 2000 motor
So I ran the back drivers side vent port back to the port on the back passengers side to a t fitting, and ran that to the lower port on the throttle body. I hooked up the port on the front of the valve cover to the top port on the throttle body
The car starts better now but when I floor it the car literally makes about 150 whp and goes nowhere. Did I hook up the pcv lines wrong or could the car have been tuned to run with the ports on the throttle body not hooked up to anything
Thanks for the help
So I ran the back drivers side vent port back to the port on the back passengers side to a t fitting, and ran that to the lower port on the throttle body. I hooked up the port on the front of the valve cover to the top port on the throttle body
The car starts better now but when I floor it the car literally makes about 150 whp and goes nowhere. Did I hook up the pcv lines wrong or could the car have been tuned to run with the ports on the throttle body not hooked up to anything
Thanks for the help
Possibly.... I would get a vacuum gauge on that car and see where you are at. You should be able to pick one up at the autoparts store cheaply. You should have around 18-21 inHG, believe that is spec for these engines. Could also be fuel, spark, and or MAF as well. You might want to check your fuel pressure at the rail as well . Do you have any SES lights on the instrument cluster? I would wager you probably have at least thrown some codes, might have the guys at autozone pull them for you.
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Verdad Gallardo Link to the setup I just said except you can't see the pcv valve on the blue line
https://ls1tech.com/forums/attachmen...kpcvsystem.jpg
https://ls1tech.com/forums/attachmen...kpcvsystem.jpg
Thread Starter
Joined: Feb 2005
Posts: 2,720
Likes: 6
From: Mckinney Plano Frisco
Thanks guys those were exactly what I needed. I have everything hooked up like the pictures except for a pcv valve.
When I got the car the port on the manifold was blocked off and the line on the tb was not hooked to anything. I believe I may have to get the car retuned
When I got the car the port on the manifold was blocked off and the line on the tb was not hooked to anything. I believe I may have to get the car retuned
i think you might somehow put he pcv line to the tb coolant pipes???
To be cheap you can put a pcv valve on the driver side valve cover and run the hose from that to the port on the side of the intake manifold and and cap the rear pass side pipe on valve cover and run the front valve cover pipe to throttle body
To be cheap you can put a pcv valve on the driver side valve cover and run the hose from that to the port on the side of the intake manifold and and cap the rear pass side pipe on valve cover and run the front valve cover pipe to throttle body
Thread Starter
Joined: Feb 2005
Posts: 2,720
Likes: 6
From: Mckinney Plano Frisco
Yeah I think it's just masking a bigger problem at this point. With the pcv system hooked up the car misses like crazy if you give it any throttle. With it capped it starts missing around 3500 and the car won't rev past 5 grand and it takes some time getting from 3500 up.
I'm gonna pull the plugs and start from there. Then check to male sure the intake manifold is tight
With a 98 a4 PCM, a 2000 motor, on a car that was originally a six speed I think I'm gonna find some problems
I'm gonna pull the plugs and start from there. Then check to male sure the intake manifold is tight
With a 98 a4 PCM, a 2000 motor, on a car that was originally a six speed I think I'm gonna find some problems
Thread Starter
Joined: Feb 2005
Posts: 2,720
Likes: 6
From: Mckinney Plano Frisco
And no it's not hooked to a coolant line, I mis spoke originally the long line that wraps around the motor is hooked to the intake manifold behind the tb
The only ses light I had was for faulty maf.
The only ses light I had was for faulty maf.
ok, but then you have both valve cover ports on a T fitting and jsut hooked directly to intake vaccum?? with no orifice or pcv valve in line?
if so all your doing is sucking oil vapors from the valve covers all the time thats the point of the pcv is to effictively do that, plus this is one gian vaccum leak it seems
if so all your doing is sucking oil vapors from the valve covers all the time thats the point of the pcv is to effictively do that, plus this is one gian vaccum leak it seems
Thread Starter
Joined: Feb 2005
Posts: 2,720
Likes: 6
From: Mckinney Plano Frisco
I have a pcv valve on the drivers side valve cover but you are correct.
However a pcv valve seems to just be a one way block off to protect against back pressure.
So the pcv valve should be set to stop the vacuum from pulling from the valve ports?
Thanks again for the help
However a pcv valve seems to just be a one way block off to protect against back pressure.
So the pcv valve should be set to stop the vacuum from pulling from the valve ports?
Thanks again for the help