hondahater

iTrader: (2)

just still woundering why my turbo never worked after the mechanic installed the new turbo. WHat would happen if he reversed the lines going to the boost guage, not on the sender side but on the turbo side? Thanks.

Icemark

What lines???

the electrical lines going from the boost sensor???

NZConvertible

There's only one line. It's a bit hard to reverse one line...

hondahater

iTrader: (2)

Sorry Sorry my mind is being stupid right now. I guess thats what I get for putting in gauges all weekend. I meant the pofec-b boost controller. Thanks. oh and also if I changed turbo's and not getting boost could it be because the gaskets wheren't changed as well? Thanks again.

Josepi

Does it approach 0" vacuum and never go positive?

hondahater

iTrader: (2)

yeah thats exactly what it does.

Ryde _Or_Die

Swap them and be done.

hondahater

iTrader: (2)

are you saying thats the problem?

Josepi

Answered PM.

hondahater

iTrader: (2)

thanks for your reply I am going to check for exhaust leak this weekend. However what would happen if the in and the out lines form the profec-b got switched? Thanks.

NZConvertible

Don't just swap them. Check to see they're installed as per the instructions.

hondahater

iTrader: (2)

don't flame me please I don't have much experience with this but where should the in go and the out go? Thanks.

NZConvertible

It should be marked on the solenoid. What does it say in the instructions?

Ryde _Or_Die

If he had them on backwards like he said he should just swap them. Should only be able to swap the lines unless he really messed up. And its easiest just to swap the hoses at the stepping motor.

NZConvertible

He has no idea if the lines are actually wrong or whether the EBC has anything to do with the problem. Swapping the lines on a properly installed solenoid without even checking first would be silly.

Personally I'd bypass ther EBC completely until the boost problem is solved. One less variable.

hondahater

iTrader: (2)

I've been thinking about taking the boost controler off for that same reason. My friend is going to check out the turbo problem this week to see whats the problem so hopefully its just the gasket thing.

hondahater

iTrader: (2)

I took off everything to the turbo almost and found that the out is on the wastegate and the in is going to the other place (what it is called I don't know) anyways this must be right?

hondahater

iTrader: (2)

ok nevermind its installed right. damn everything looks good. I guess I'm just going to have to take the hole turbo and manifold off to see if the gasket went bad.

hondahater

iTrader: (2)

i checked all hoses and everything was tightened very well so there is no boost leak or vac leak anywhere other than maybe a manifold gasket. is there any other way to tell it is the manifold without taking everything apart? Thanks.

iluvrx7z

very carefully if you run your fingers along the joint while the engine is running, not actually touching it of course. If there is a leak, you will feel it.

Don't as how i know

Dan

Rx7Ridah

iTrader: (8)

if turbo spools but no boost could be a couple of things. first check all clamps on the intake setup from the turbo all the way to the throttle body. if those are good verify that the factory boost sensor has a vacuum line on it and secure. verify that you arent getting boost by using an aftermarket boost gauge patched into a vacuum line that is connected directly to the intake manifold. good source is the line that runs the blow off valve. if it is the factory boost gauge indash that isnt seeing boost and you can hear the turbo could be bad wiring going to the boost sensor. i personally havent installed a profec so i am not sure if it patches to any of the boost sensors wiring, consult the profec's install directions for that one. i had a wire break going to the boost sensor and even though everything was in good mechanical condition no boost and no spooling sound. good luck. oh yeah i doubt that it is your exhaust gasket, itd have to be one hell of a hole for you to get no boost and youd hear the leak even at idle.

hondahater

iTrader: (2)

damn I need a rotary mechanic to figure this one out damn!!! I've checked all connection leading from the turbo to the throttle body and everything is good. I do have a vacuum line on the boost sensor. The after market boost gauge is wired into the same line that goes into the blow off valve. I don't know what the deal is!!! I'm lost. Anyone in louisiana wanna give me a hand!!! I'll pay!!!

Perry Gehenna

does your intercooler leak?

i think one way to check it out would be to remove it, fill it with water, and see if water pisses out through any holes in the tubes.

but it would have to be a fairly large hole to prevent it from building any boost whatsoever.

i had a leaking engine-to-manifold gasket recently.
you could HEAR the exhaust pulse "ticking" quite clearly. it was a large leak, yet i was still building boost. you'd really know about it if it were a gaping hole type leak i'd say, it'd be loud!

disconnect your electronic boost controller completely, and see if you can build boost without it, you'll know if everything's fundamentally OK then.
I dunno,
have fun sorting it out.
Mazda charge an arm & a leg for gaskets here in Oz.

hondahater

iTrader: (2)

I'm taking the boost controller of today. do i just get a small piece of hose and connect it from the wastegate to the other place where it is connected to the controller? Thanks.

Is there any way this could be a bad turbo even though it spins freely and has no shaft play? Thanks.

Josepi

Just run a line from the nipple on the compressor housing directly to the wastegate actuator.



Good luck.