 Haynes Manual Junkies / Emissions junk, Help me id a part |
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| Rand |
 Jun 13 2005, 11:16 PM
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#1
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Cross Member  Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None  |
I have a '75 2.0 Djet...
Haynes manual, page 41, item 19.... Nice.... the figures show items 1-18. Everything in the illustration execpt the ONE item I wanna know about!@! #19! Three hoses tie into the air intake. I'm guessing a pneumatic deceleration valve? Looks like item 10 on page 40? My car is 99% desmogged and I'm thinking this piece is doing nothing good for me. But before I go experimenting with how things behave differently when I plug this stuff off, please WARN me if I'm playing with anything important... ? |
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Replies(1 - 4)
| Rand |
Jun 13 2005, 11:52 PM
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#2
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Cross Member Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None |
Ok, how about a photo...
(IMG:http://www.914world.com/bbs2/uploads/blog-1118728497.jpg) |
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| Rand |
Jun 14 2005, 12:16 AM
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#3
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Cross Member Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None |
If it says "USA only" I have to ask... Why?
PDV? What good is it? It's alsmost outta there. Somebody stop me. Anyone? Bueller? |
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| Marlow |
Jun 14 2005, 09:47 AM
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#4
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Member Group: Members Posts: 311 Joined: 14-August 03 From: Manassas, VA Member No.: 1,027 |
Yep, deceleration valve.
It's an emissions part -- from Paul B. Anders D-Jet site on Rennlist; "Provides additional air to the engine during overrun to reduce emissions" |
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| Dave_Darling |
Jun 14 2005, 11:09 AM
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#5
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914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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It can also help keep an engine that is somewhat out-of-tune from dying when you push the clutch in.
Some feel that it can help prolong the life of the vacuum-related bits in the MPS, as it keeps the manifold vacuum from being too high. I'm not sure I buy this explanation, but I figure it can't really hurt, and it just might help... --DD |
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