ISV Cleaning

ianellison · 08-09-2009, 10:48 AM

I've just taken my ISV off and cleaned it with about half a can of Carb & choke cleaner. I cant see any moving elements in the valve! What is supposed to rotate and should it be seeable when the unit is off? The first wash throughs did come out with some oil dissolved but later ones were clean so I believe the valve is thoroughly clean.

DaveK · 08-09-2009, 11:05 AM

There isn't much to see. If you look inside it, you will see a small gap - the valve actually rotates the other way (so in other words, when it rotates, the gap would disappear).

SeanR · 08-09-2009, 11:12 AM

You can put 12v power to it and watch it cycle.

dfinnegan · 08-09-2009, 11:35 AM

The "shutter" moves left and then past the opening.

08-09-2009, 10:48 AM	#1
ianellison Addict Rennlist Member Join Date: Jun 2006 Location: Shipley, West Yorkshire, UK Posts: 355	ISV Cleaning I've just taken my ISV off and cleaned it with about half a can of Carb & choke cleaner. I cant see any moving elements in the valve! What is supposed to rotate and should it be seeable when the unit is off? The first wash throughs did come out with some oil dissolved but later ones were clean so I believe the valve is thoroughly clean. __________________ Ian 1990 C4 Guards Red Cabriolet 1991 BMW 2.5i SE Auto 2008 Suzuki SX4 GLS

08-09-2009, 11:05 AM	#2
DaveK Addict Rennlist Member Join Date: Nov 2001 Location: Surrey, UK Posts: 3,851	There isn't much to see. If you look inside it, you will see a small gap - the valve actually rotates the other way (so in other words, when it rotates, the gap would disappear). __________________ Dave '90 964 C4 '02 996 TT

08-09-2009, 11:12 AM	#3
SeanR Addict Rennlist Member Join Date: Apr 2006 Location: Denton Texas Posts: 7,856	You can put 12v power to it and watch it cycle. __________________ http://www.928srus.com/ Anotherplace -------------------------- '88 S4 •• Law of Mechanical Repair - After your hands become coated with grease, your nose will begin to itch and you'll have to pee.