vacuum lines HF>SI ????
 

dose any one know the proper way to redo the vacuum lines......i have a 89 HF and have a 91 IM

Re: vacuum lines HF>SI ???? (CCCP-ef)
 

dose anybody know?

What do you mean by "redo" ?

he is askin i think how to run the vacuum canisters that are on the firewall to the intake manifold, like what line goes where.... help a fellow ef'er out...bump

Re: vacuum lines HF>SI ???? (CCCP-ef)
 

good question, i dont know.

bump for you. https://honda-tech.com/forums/images/smilies/emthup.gif

Re: vacuum lines HF>SI ???? (CCCP-ef)
 

here are vacuum lines in the box on the firewall for HF - you will only need numbers 7, 12 & 21

https://i38.photobucket.com/albums/e...x/91-11-15.jpg

this is where they are on the HF engine

https://i38.photobucket.com/albums/e...x/91-11-14.jpg

this is where they are on the 89-91 Si MPFI engine (88 is a little different)

https://i38.photobucket.com/albums/e...89_91Sivac.jpg

this is 88

https://i38.photobucket.com/albums/e.../88SIvac-1.jpg

Re: vacuum lines HF>SI ???? (jlicrx)
 

thanks.......but the other question is where is the EGR valve on the SI?

Re: vacuum lines HF>SI ???? (crazykamper)
 

only HFs have EGR

Re: vacuum lines HF>SI ???? (Bob_760)
 

because the SI ecu is giving me code 12


(you see what happens when you let other people use you computer... LOL https://honda-tech.com/forums/images/smilies/emwink.gif )

Re: vacuum lines HF>SI ???? (CCCP-ef)
 

Oh right Cali... Is it a Cali emissions manual EX sedan MP6 perhaps? Thats the only PM6 I've ever heard of having EGR. Good luck with that, I'd get a non egr PM6. Other than that I dono.

Anyone know if I can use these digrams on my 91 civic? I'm getting ready to go MPFI and want to have all the info. I can get.

Re: (DenzComp)
 

vacuum lines will depend on what engine it is - essentially, for the engine to run right (if it doesn't have EGR) you only need vacuum line from throttle body/intake manifold to the MAP sensor and vacuum line from the intake manifold to the fuel pressure regulator

Re: (jlicrx)
 

You wouldnt happen to haev that same diagram for a DX would yoe? I am in the same dilemna