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Old 02-23-2009, 05:03 PM   #1
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Default d15b7 vacuum hoses

I have the d15b7 engine and Im trying to figure out where one of the hoses goes. I looked at an engine in the junk yard and saw that the hose circled in the picture goes to the back of the head of the engine. My only trouble is that there is already a hose there. So if anyone knows where it runs that would be great
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Old 02-24-2009, 11:33 AM   #2
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Default Re: d15b7 vacuum hoses

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Old 02-24-2009, 12:18 PM   #3
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Default Re: d15b7 vacuum hoses

That hoes goes to the second tube of that metal double tube piece currently connected to the intake piping and valve cover (its also not the correct one for a D15B7) The hose isn't a vacuum line btw, coolant runs through it. The other piece that should be connected to the other end of that short pipe goes to a nipple of the water running across the back of the block between the thermostate housing and water pump IIRC. One final note, that open nipple on your throttle body is for the vacuum line coming from your MAP sensor, I wasn't sure if you were aware it was disconnected or not.
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Old 02-24-2009, 03:41 PM   #4
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Default Re: d15b7 vacuum hoses

yea i got the map sensor hooked up and I got a different piece for the coolant line Ill get a picture then of what it looks like now. Anyway the port that it runs too is below a larger hose at the back of the block? I think thats correct but they are both hooked up and running to other places so i dont know what to do with it
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Old 02-25-2009, 03:29 PM   #5
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Default Re: d15b7 vacuum hoses

Ok pictures are below

First picture - The hose circled is where I think its supposed to run but there is already another hose there

Second picture - Circled is where the hose that is already hooked up to runs to the back of the intake manifold.
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Old 02-27-2009, 12:12 PM   #6
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Old 02-28-2009, 10:05 AM   #7
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Default Re: d15b7 vacuum hoses

First pic shows the correct routing of the hose in the first pic, it goes from the back of the intake manifold to the metal tubing.



Second pic shows the second part of the hose after the metal tubing. Both ends are marked with red arrows.



Both pics are of a JDM D15B Vtec, the hose routing is identical in both cases though. Your last pic is of the purge solenoid, which should be setup as follows: vacuum line from back of IM to purge solenoid (short line only 4 - 5 inches long. And from the purge solenoid to the charcoal canister on the firewall.
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