Accordion Hose

lmmr74 · 03-13-2013, 10:13 AM

Hello, i just found out that one of the hose's that connects to the accordion hose is disconnected, because the previous owner simply covered the connection hole...Is this right??
Sometimes my car as a rough iddle, can this be connected?

Thanks

pandrade · 03-13-2013, 06:21 PM

i know on the turbo modle there are 3 bungs for hoses i belive 1 is to the bov, 2nd is for a pipe that crosses over the head which i belive is part of pcv system or breather and the third i dont remember, but they are alll really easy to connect and figgure out.

more details on your car would be very helpfull. what modle is it a n/a turbo, did you go from n/a to turbo? and a pic is very helpfull

MA70-3.0GT · 03-13-2013, 08:09 PM

If you have a turbo? The recirculating BOV could have been replaced with an atmospheric BOV (PSHHHH! noise letting off the gas?).
Few more details of the car would help & a pic of the hole you're talking about, if it IS the BOV replacement this can cause rough running in 3 ways.

First way is if the wrong type is fitted (cheap single piston BOV will cause a vacuum leak at idle, you need either recirc. or twin piston) or if the original has just had one end disconnected.

Second is if you have a twin piston that's not sealing for some reason (some are adjustable, or secondary piston could just be stuck or leaking)

Third reason (less likely) is with atmospheric BOV's, when you let off the throttle from high boost situations the engine can run rich momentarily due to the (already metered by the AFM) boost air being vented instead of making it into the motor.

HTH

P.S. Pandrade, the other hole under the accordion hose is power steering full lock idle-up valve IIRC

03-13-2013, 10:13 AM	#1
lmmr74 Stock Join Date: Aug 2011 Location: Portugal Posts: 21	Accordion Hose Hello, i just found out that one of the hose's that connects to the accordion hose is disconnected, because the previous owner simply covered the connection hole...Is this right?? Sometimes my car as a rough iddle, can this be connected? Thanks

03-13-2013, 06:21 PM	#2
pandrade 12psi boost Join Date: Mar 2011 Location: fort myers florida Posts: 345	i know on the turbo modle there are 3 bungs for hoses i belive 1 is to the bov, 2nd is for a pipe that crosses over the head which i belive is part of pcv system or breather and the third i dont remember, but they are alll really easy to connect and figgure out. more details on your car would be very helpfull. what modle is it a n/a turbo, did you go from n/a to turbo? and a pic is very helpfull __________________ 1987 7m-gte R-154, SS braided clutch line, full 3in exshaust,aluminum radiator,full throttle gen 2 whith GM 3 inch mass air flow,13lbs flywheel, and more to come

03-13-2013, 08:09 PM	#3
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	If you have a turbo? The recirculating BOV could have been replaced with an atmospheric BOV (PSHHHH! noise letting off the gas?). Few more details of the car would help & a pic of the hole you're talking about, if it IS the BOV replacement this can cause rough running in 3 ways. First way is if the wrong type is fitted (cheap single piston BOV will cause a vacuum leak at idle, you need either recirc. or twin piston) or if the original has just had one end disconnected. Second is if you have a twin piston that's not sealing for some reason (some are adjustable, or secondary piston could just be stuck or leaking) Third reason (less likely) is with atmospheric BOV's, when you let off the throttle from high boost situations the engine can run rich momentarily due to the (already metered by the AFM) boost air being vented instead of making it into the motor. HTH P.S. Pandrade, the other hole under the accordion hose is power steering full lock idle-up valve IIRC __________________ '89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!! Last edited by MA70-3.0GT; 03-13-2013 at 08:11 PM.

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