NEED HELP: 1974 1.8L Will Only Start with Brake Clean, Runs with AFM disconnected only Options

[Nor.Cal.914]

Hello everyone,

I have a 1974 1.8L that needs a new fuel pump and the customer purchased this pump from Pelican:

https://www.pelicanparts.com/More_Info/0439...59&DID=4630

I have already figured out the line routing in terms of inlet and outlet, but I do have a few questions about some other aspects. Being that the stock pump is a 3-port pump, first question is, what was the reasoning behind the 3 ports instead of just an inlet and outlet? My first thought was maybe an internal FPR, but I see there is a one in the engine compartment so that doesn't seem to be the case, but please correct me if I'm wrong! Second question involves mounting the pump. I have a 1975 so I'm not as familiar with how the 1974's were setup. This car has the coil style ring bracket around the pump which I'm now trying to figure out if I can utilize to mount the new pump. Main issue of course is the fact that all 3 lines came out on one side of the factory pump, whereas this pump has inlet/outlet on either side.

So my question is, what have you guys done to mount your pumps either in the same location or where did you place it instead of the factory location? Thank you in advance for the help! (IMG:style_emoticons/default/beerchug.gif)

-Christopher

[fiacra]

A few thoughts that came to mind when reading your posts. Hopefully these will be helpful....

Here's a thread from another L-Jet owner with a similar problem. One problem was a loose connection at the AFM that wasn't evident until he "wiggled" the wire. The other problem (not in the thread but known from private communication) was that there were multiple vacuum leaks.

http://www.914world.com/bbs2/index.php?sho...342895&st=0

Here's a link to the "914 Tech Notebook" section on Jeff Bowlsby's website. There are multiple L-Jet manuals in this section. Just scroll down through the list and you'll see them, with clickable links. Jeff's website is worth exploring whenever you have the time. Lot's of links to resources there.

https://bowlsby.net/914/Classic/TechNotebook.htm

I had a several week education in L-Let when I revived a 1979 VW Super Beetle from a 16 year nap. By far the best explanation of the system that helped me was in the Bentley manual. There is a section at the rear of the manual dedicated to explaining the system. It was clear and concise, but also probably duplicative of the resources on Jeff's website. PM me with an email and I can probably scan that section for you and email it to you. I might be local to you, depending upon where you are in NorCal, so I could just lend you the manual. I'm in the East Bay. Also, sounds like you have eliminated the dual relay as an issue, but if you are local and are still concerned I do have a known good dual relay you can plug in to confirm.