How may wrong things are in these pictures, 75 1.8 L-Jet non catalyst and no air pump Options

[914rrr]

I've been stocking up on hose diagrams to help sort out my non-smog 75 1.8 L-Jet engine bay hoses. There also seems to be some discussions as to whose vacuum hose diagrams are the correct-est. (IMG:style_emoticons/default/smile.gif)

BTW, I do have the charcoal canister and bracket.

I snapped a few pics of my engine bay and methinks there's a bunch wrong with the vacuum hoses in there.

Any input, as always, is much appreciated.

[914rrr]

[JeffBowlsby]

@wonkipop

[914rrr]

@wonkipop

Is this the thread you're referring to ?

http://www.914world.com/bbs2/index.php?showtopic=351159

For starters, I don't have any hose connected to the retard side of the distributor at this point, and the hose from the oil filler goes straight to the air filter.

Q: What does the hard tubing that goes to the gas tank evaporative chamber look like and where does it pass through the body on both ends? At first glance I don't see anything like a hard tube on either end. My main motivation is to significantly reduce or eliminate any "gas smells" coming from my 914 so my mom will let me park it in her garage. (IMG:style_emoticons/default/smile.gif)

[wonkipop]

@wonkipop

Is this the thread you're referring to ?

http://www.914world.com/bbs2/index.php?showtopic=351159

For starters, I don't have any hose connected to the retard side of the distributor at this point, and the hose from the oil filler goes straight to the air filter.

Q: What does the hard tubing that goes to the gas tank evaporative chamber look like and where does it pass through the body on both ends? At first glance I don't see anything like a hard tube on either end. My main motivation is to significantly reduce or eliminate any "gas smells" coming from my 914 so my mom will let me park it in her garage. (IMG:style_emoticons/default/smile.gif)

no.
the diagrams are in this topic.
see towards bottom of page.

http://www.914world.com/bbs2/index.php?sho...57407&st=40

so far i have only done the hose diagrams for the 74 1.8s.

------
you have a 75 1.8.
the 49 state 75 1.8s had a hose set up virtually identical to the 74 EC-A engine cars (caifornia). there were very minor differences that were to do with hose couplings and a different design decel valve. buts that all. you can use the EC-A diagram in the link above.

the 75 1.8s had the evap charcoal can in the engine bay.
it was in a different position than the engine bay cans on the 74.
instead mounted off side of battery tray.
the hose hook up is as per the engine bay cans on the 74.
the only hose leading back to the fuel tank is the small diameter fume hose and it runs through the central tunnel of the car. there are no hoses in the side sills behind the rocker panel on the 74 cars from late Nov 73 onward and the 75 cars.

to note -

there has been some discussion about the correct way to connect those hoses to the charcoal can.
it has been established that VW and Porsche altered and revised the plumbing of the hoses to the canister when they moved it to the engine bay location. this is not speculation - it is supported by the emissions warranty diagrams that were originally provided with the cars along with the owners operating manual.

(IMG:style_emoticons/default/beerchug.gif)


EDIT - if you have a 75 1.8 (California). it has an EGR. but it sounds like yours does not have that emissions gear on it. if it did and you needed to know how it worked i could probably do a quick sketch. (IMG:style_emoticons/default/beerchug.gif)

[fiacra]

If you are interested here are the diagrams from the 1975 Emissions Control System maintenance and warranty booklet for MY 1975 1.8. I'll also attach the full booklet in pdf format in case anyone wants to download it.









 1975_Emissions_Control_System.pdf ( 2.15mb ) Number of downloads: 5

[wonkipop]

evap can and hose connection plumbing for 75 1.8.
(this is also a good view of a 75 49 states engine bay - no EGR - all in pretty much original state).

[ClayPerrine]

They moved the charcoal canister sometime during the 1974 run, so the late 74s have the canister in the engine bay.

[Geezer914]

L jet. The only hoses I have are the oil fill to the throttle body S hose. A hose from the S hose to the auxiliary air valve, and a vacuum line from the throttle body to the fuel pressure regulator. Everything else has been eliminated.

[wonkipop]

They moved the charcoal canister sometime during the 1974 run, so the late 74s have the canister in the engine bay.

there were 3 weeks of L jets from around about oct 30 to nov 20 1973 with the can in the frunk. after that its in the engine bay.

aug 73 to oct 30 73 it seems to be only 2.0s were produced. all with frunk can.
then L Jet 1.8 starts production right at the end of october 73 -- and for about 3 weeks is produced with frunk can. (IMG:style_emoticons/default/beerchug.gif)