Vapor Recovery Hoses - What to Do? - SOLVED
It's been a long time, since I posted about gas gushing out of the gap cap (11/2018) (
https://www.fsjnetwork.com/forum/viewto ... 52#p168852), and issues with the gas pump constantly shutting off due to no vent... First step then, was to get a vented gas cap & leave the vapor recovery hoses alone until i could find the parts required to put things back to stock; it took 3 years to find/source a charcoal canister & man, i glad i did! After 3+ years of owning the GW, i can finally pump gas unimpeded. thanks [mention]tgreese[/mention]!
for the recommendation to add this capability back.
The charcoal canister & now installed non-vented gas cap was part of a treasure trove a friend of mine tripped across in a local junkyard a couple of weeks ago, that included leather seats, leather-wrapped steering wheel, radio, rear air deflector, etc.; most of which will be added to our '90 GW - see here:
https://www.fsjnetwork.com/forum/viewto ... =7&t=22226.
Following [mention]nograin[/mention]'s advice (
http://www.ifsja.org/forums/vb/showthread.php?t=174213), i used Dupont Viton 1/64" rubber sheet to replace the blown diaphram under the purge signal cap.
Charcoal canister & mounting bracket came from a GW in Jake's FSJ Junkyard in Burnsville, NC - Thanks, Jake! [mention]tanker[/mention]
First by tracing around the existing diaphram(pic bottom left), and cutting carefully(pic bottom right), then by cutting closely around the metal to sit on top of the spring.
Success!
After rebuilding the charcoal canister, i set about finding parts to replace the vacuum switch, hoses & fittings. Thanks
[mention]mysticrob[/mention] for pointing me to the Howell Vacuum diagram.
Howell Vacuum Diagram by
Robert Stone, on Flickr
Parts list:
- 2-port vacuum switch - Standard Ignition Products - PVS71
- 5/32" vacuum tubing - Gates #27038
- 7/32" vacuum tubing - Gates #27039
- 1/64" Dupont Viton from Dixie Rubber & Plastics, Greenville, SC
- 5/16" Fuel Line - Gates - 8ft - replaces the vapor recovery hoses
- 5/16" Elbow - Gates #28620 or Napa NBH-9920
- 3/8"x3/8"x1/4" Tee - American Grease Stick - PRF44B
- 3/8" Tee - Gates #28632 or Napa NBH-9932
- 3/8" Elbow - Gates #28622 or Napa NBH-9922
- 1/4" Tee - Gates #28631 or Napa NBH-9931
- 1/4" -> 3/16" Reducer - Gates #28593 or Napa NBH-9893
Note: I have the parts to connect to the EGR, but haven't yet verified if it's good; and, have seen mention that it's better to run an ECM-controlled EGR valve, if running EFI; so, jury's out on that right now.
Underhood