Weber and Fuel Pressure - Suzuki Forums: Suzuki Forum Site
Suzuki Forum Suzuki Forums

» Auto Insurance
» Featured Product
Wheel & Tire Center

Go Back   Suzuki Forums: Suzuki Forum Site > Suzuki Models > Suzuki Jimny, Sierra & Samurai Forum
Register Home Forum Active Topics Photo Gallery Garage Search Today's Posts Mark Forums Read Auto EscrowAuto LoansInsurance Advertise

Suzuki-Forums.com is the premier Suzuki All Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 04-02-2013, 07:59 AM   #1 (permalink)
Member
 
Join Date: Sep 2009
Location: North Texas
Posts: 66
Gallery: 0
Beerman is on a distinguished road
Default Weber and Fuel Pressure

Greetings! I have a Weber on the way for 87 with stock 1300 and Headers. I have a new OEM Fuel Pump I never installed so it's going on as well. Folks at weberdirect claim fuel pressure can't be higher than 2.5 PSI! Funny the factory float and seat can take the mechanical pressure. Of course the OEM carb has a return line. So will a new mechanical pump put out too much pressure? I hate to buy the regulator and gauge only to find I don't need it.

Also any tips on the upgrade? Hell-of-alot of wires and vacuum lines to sort out!
__________________
87 Sammy, Stock 1300, Stock Carb with Vent Tube,Pacesetter Headers, 2" exhaust, no-cat, 33s on Shackle Lift. EZ-Lockers up front.
Beerman is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 04-02-2013, 08:39 AM   #2 (permalink)
Newbie
 
Join Date: Mar 2013
Location: Arizona
Posts: 19
Gallery: 0
JungleJim0745 is on a distinguished road
Default

https://www.suzuki-forums.com/suzuki-...gh-trails.html

I just put a new weber on my 87 Samurai and had a few issues but got them solved. Go to the above link to see the thread and pictures of what I did to mine to resolve the issues.I thought at first mine was a fire issue because it ran to great on flat roads, but it now runs great on any terrain I have been on such as tilted to either side a considerable amount, going up and down steep inclines and on the road. Weber does make what they call the IDF Carb which is more for off roading, but it is considerably higher priced and I don't do any competition with mine, just run desert and mountain trails here in SE AZ mostly.

The other issue I was worried about because I thought it was a fire issue was the ECM, turned out I took it out as it is not needed without the stock carb. Mine even got a new tune up with cap, rotor, coil, plugs and plug wires because I thought it was a electrical problem. Oh well it needed it anyway I am sure. My REJECT (Samurai) has 124K showing on the odometer but was pulled all except about 50K of that behind a motorhome before I got it. Just goes to show one that fifty plus years of being a mechanic and owning garages does not keep us from being tricked at times.

The Weber does NOT get as much mileage on each gallon because the stock jets are bigger than the original, but has increased power and speed on the road.

I replaced my fuel pump shortly after getting the REJECT and it has a return line to the tank on the pump as well as a relief line from the float bowl on the new Weber to the charcoal cannister and I have no issues with too much pressure on mine at all. My new stock pump only puts out about 3 lbs of pressure.

Happy Four Wheeling.

Last edited by JungleJim0745; 04-02-2013 at 08:44 AM.
JungleJim0745 is offline   Reply With Quote Quick reply to this message
Old 04-02-2013, 10:41 AM   #3 (permalink)
Member
 
Join Date: Sep 2009
Location: North Texas
Posts: 66
Gallery: 0
Beerman is on a distinguished road
Default

Thanks for the feedback, I'll keep ya posted...
__________________
87 Sammy, Stock 1300, Stock Carb with Vent Tube,Pacesetter Headers, 2" exhaust, no-cat, 33s on Shackle Lift. EZ-Lockers up front.
Beerman is offline   Reply With Quote Quick reply to this message
 
Old 04-02-2013, 01:05 PM   #4 (permalink)
Newbie
 
Join Date: Mar 2013
Location: Arizona
Posts: 19
Gallery: 0
JungleJim0745 is on a distinguished road
Default

I forgot in the earlier post, I did reset the float level in my Weber. It was set when I got it to where the bowl filled right to the top and I reset it to only fill about 2/3 full.

Happy Four Wheeling.
JungleJim0745 is offline   Reply With Quote Quick reply to this message
Old 04-03-2013, 09:52 AM   #5 (permalink)
Senior
 
Join Date: Feb 2012
Location: Astoria Oregon
Posts: 278
Gallery: 3
Boxcar is on a distinguished road
Garage
Default

Yes the stock OEM pumps to much pressure for a Webber APROX 4psi.
You need a regulator and gauge.....
Jims problem was caused by float flutter , not over fueling.

Last edited by Boxcar; 04-03-2013 at 09:56 AM.
Boxcar is offline   Reply With Quote Quick reply to this message
Old 04-04-2013, 08:07 AM   #6 (permalink)
Member
 
Join Date: Sep 2009
Location: North Texas
Posts: 66
Gallery: 0
Beerman is on a distinguished road
Default

Ok thanks, I'll pick one up today! On the float flutter issue, as the bowl has that rectangular vent under the filter, why not just plug the hose fitting and do away with the vapor tank? Also someone mentioned leaks from the paper gasket between the adapters. Do ya'll recommend the a spray on coating? Brand?

Carb came in yesterday, I just finished installing a killer Air Horn under the hood! Will start stripping her down this evening and install new fuel pump first while I have the room.

Prost!
__________________
87 Sammy, Stock 1300, Stock Carb with Vent Tube,Pacesetter Headers, 2" exhaust, no-cat, 33s on Shackle Lift. EZ-Lockers up front.
Beerman is offline   Reply With Quote Quick reply to this message
Old 04-04-2013, 10:23 AM   #7 (permalink)
Senior
 
Join Date: Feb 2012
Location: Astoria Oregon
Posts: 278
Gallery: 3
Boxcar is on a distinguished road
Garage
Default

While I no longer run a Zuke motor in my Samurai I am running a 5250 Holly / Webber clone on the new engine. I deleted the charcoal canister from the rig entirely with no ill effects.
I do not have to deal with smog regs where I live though.
I recommend copper plus spray on gasket sealer on paper gaskets.

Last edited by Boxcar; 04-04-2013 at 10:27 AM.
Boxcar is offline   Reply With Quote Quick reply to this message
Old 04-10-2013, 10:02 AM   #8 (permalink)
Member
 
Join Date: Sep 2009
Location: North Texas
Posts: 66
Gallery: 0
Beerman is on a distinguished road
Default ECM and Plugs?

Had a successful weekend installing Weber with a Mr.Gasket Fuel Regulator. I pulled and abandoned all the ECM plugs from everything except the O2 Sensor, and altitude sensor on firewall. What you you guys do with all the plugs and extra wires? I already have a GM alternator with the plug adapter and taped up battery wire as I added a new 6ga. to battery.

I'd like to clean things up best I can. I'm still using the vapor canister for carb bowl vent. One problem I had was the choke to coil wire pulled out of cheap stakeon at choke, shorted and blew the fuse! Just a few minutes to figure that out, but that's why I'm leery of just bundling up a bunch of hot wires...

Thanks!
__________________
87 Sammy, Stock 1300, Stock Carb with Vent Tube,Pacesetter Headers, 2" exhaust, no-cat, 33s on Shackle Lift. EZ-Lockers up front.
Beerman is offline   Reply With Quote Quick reply to this message
Old 04-10-2013, 12:42 PM   #9 (permalink)
Senior
 
Join Date: Feb 2012
Location: Astoria Oregon
Posts: 278
Gallery: 3
Boxcar is on a distinguished road
Garage
Default

Remove all un necessary wires from the harness. Plug all un used vacuum spigots.
And enjoy you're well sorted engine compartment.
Boxcar is offline   Reply With Quote Quick reply to this message
Old 04-10-2013, 06:30 PM   #10 (permalink)
Newbie
 
Join Date: Mar 2013
Location: Arizona
Posts: 19
Gallery: 0
JungleJim0745 is on a distinguished road
Default

Well since my last post, I contacted Weber again and talked at length with a techrep there. I asked him to send me paperwork to return the carb to them as I was very disappointed with it and with the float flutter and partial flooding when off road and on inclines. He said they could do that, but then asked if I would try one more thing. He said he would send me another carb with paperwork to send the one I had back. If that didn't work then he said we will just return your money. I agreed and he said it waould be in the mail Monday when we talked.

The new carb got here today and I installed it, hit the trails and no problems at all. It was a bad carb they sent me causing the whole problem. Got it all ready to send back tomorrow morning. I have to commend Weber people because they did work very willingly with me to get this resolved and I am very happy it works well, because I was not looking forward to scouring a salvage lot for a carb and whatever else I needed to do it with. Especially since the friendly little rattlesnakes have came out of hibernation here in SE AZ now.

I am a very happy REJECT owner, my Samurai's name and decal name.

Happy Four Wheeling all.
JungleJim0745 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  Suzuki Forums: Suzuki Forum Site > Suzuki Models > Suzuki Jimny, Sierra & Samurai Forum

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Suzuki Forums: Suzuki Forum Site forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 10:12 AM.



Powered by vBulletin® Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.