R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro On-Road

Reply
 
Thread Tools Search this Thread
Old 10-28-2006, 08:40 PM   #1
Tech Initiate
 
Join Date: Aug 2006
Posts: 22
Exclamation Fuel not getting to the carb

Okay I have a RS4 3 rtr that I bought off the internet. For some reason I can't get the fuel to move up the line. I checked it for cracks or leaks or anything. I don't know what to do now. Can anybody here help me?
Mann2006 is offline   Reply With Quote
Old 10-28-2006, 09:03 PM   #2
Tech Master
 
cdelong's Avatar
 
Join Date: Jul 2004
Location: The Sunshine State
Posts: 1,805
Trader Rating: 12 (100%+)
Default

put your finger over the stinger and try to start it.


with the glow plug removed.... is there any resistance when you turn the piston past TDC?
__________________
KYOSHO EVOLVA
35PLUS21
FUTABA 3PKS/KO PROPO
BYRON'S FUEL/TWISTER TIRES
cdelong is offline   Reply With Quote
Old 10-28-2006, 09:09 PM   #3
Tech Initiate
 
Join Date: Aug 2006
Posts: 22
Default

What is the stinger?
Mann2006 is offline   Reply With Quote
Old 10-28-2006, 09:11 PM   #4
Tech Master
 
cdelong's Avatar
 
Join Date: Jul 2004
Location: The Sunshine State
Posts: 1,805
Trader Rating: 12 (100%+)
Default

it's on the exhaust pipe.... the opening towards the end of it.
__________________
KYOSHO EVOLVA
35PLUS21
FUTABA 3PKS/KO PROPO
BYRON'S FUEL/TWISTER TIRES
cdelong is offline   Reply With Quote
Old 10-28-2006, 09:14 PM   #5
Tech Initiate
 
Join Date: Aug 2006
Posts: 22
Default

yes there is resistance
Mann2006 is offline   Reply With Quote
Old 10-28-2006, 09:18 PM   #6
Tech Master
 
cdelong's Avatar
 
Join Date: Jul 2004
Location: The Sunshine State
Posts: 1,805
Trader Rating: 12 (100%+)
Default

is this a new or used purchase?

resistance is good.

you should be able to start it if you can get that fuel flowing..... open the high end needle 1 turn and put your finger over the stinger when you turn it over. you should see fuel flowing pretty quickly. once you see that fuel get to the carb, attach the glow ignitor and hang on
__________________
KYOSHO EVOLVA
35PLUS21
FUTABA 3PKS/KO PROPO
BYRON'S FUEL/TWISTER TIRES
cdelong is offline   Reply With Quote
Old 10-28-2006, 09:23 PM   #7
Tech Initiate
 
Join Date: Aug 2006
Posts: 22
Default

This is a used one. I set all the stuff back to factory settings. I'll try what you said tomorrow morning it's too late to do that now. It's 11:23 here.
Mann2006 is offline   Reply With Quote
Old 10-28-2006, 09:36 PM   #8
Tech Addict
 
tunerjetta29's Avatar
 
Join Date: Oct 2004
Location: Fontana,CA
Posts: 690
Trader Rating: 6 (100%+)
Default

its possible the fuel inlet on the carb isnt properly aligned with the high speed needle inlet. That can keep fuel out of the carb for sure
tunerjetta29 is offline   Reply With Quote
Old 10-28-2006, 09:41 PM   #9
Tech Initiate
 
Join Date: Aug 2006
Posts: 22
Default

How do I allign that?
Mann2006 is offline   Reply With Quote
Old 11-01-2006, 03:18 AM   #10
Tech Initiate
 
Join Date: Aug 2006
Posts: 22
Default

Does anybody know how i allign that?
Mann2006 is offline   Reply With Quote
Old 11-01-2006, 09:01 AM   #11
Tech Master
 
Turbine_au's Avatar
 
Join Date: Jan 2006
Location: SA
Posts: 1,340
Trader Rating: 6 (100%+)
Default

If you haven't already, check that the metal nipple coming off the tank is secured properly. I have had mine come loose.

Pull the pressure line off from the exhaust pipe. Make sure it's clean, then gently blow on the line at first. You should immediately see fuel flow. If not, blow a little harder. If still nothing then it sounds like you've got a pressure leak. Check the condition of the seal on the fuel tank lid. When you blow, can you hear escaping air?
__________________
It's mine: http://au.youtube.com/watch?v=usYhSWbmx6s
Turbine_au is offline   Reply With Quote
Old 11-01-2006, 10:24 AM   #12
Tech Addict
 
tunerjetta29's Avatar
 
Join Date: Oct 2004
Location: Fontana,CA
Posts: 690
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by Mann2006
Does anybody know how i allign that?
You have to loosen the high speed needle housing, then i used to stick a small safety pin in the fuel inlet to keep them aligned while i tightened the high speed needle housing again. Havent had that since back in the day with plastic fuel inlets on the old O.S. carbs, but it is possible.
tunerjetta29 is offline   Reply With Quote
Old 11-01-2006, 11:36 AM   #13
Tech Master
 
cdelong's Avatar
 
Join Date: Jul 2004
Location: The Sunshine State
Posts: 1,805
Trader Rating: 12 (100%+)
Default

you don't need to have the holes aligned from the carb inlet to the needle housing on any engines I've seen.... there is a recessed area machined all the way around the hole in the housing.

it's just like a banjo fitting on a real car carbureator.
__________________
KYOSHO EVOLVA
35PLUS21
FUTABA 3PKS/KO PROPO
BYRON'S FUEL/TWISTER TIRES
cdelong is offline   Reply With Quote
Old 11-01-2006, 01:10 PM   #14
Tech Addict
 
tunerjetta29's Avatar
 
Join Date: Oct 2004
Location: Fontana,CA
Posts: 690
Trader Rating: 6 (100%+)
Default

On the very early OS CV engines (late 90's i guess) i had both .12 and .15 versions with plastic inlets that were not banjo fittings, and i found that more than once they shifted and had this problem. If it does have a banjo style inlet then you are correct, this isnt the problem.
tunerjetta29 is offline   Reply With Quote
Old 11-03-2006, 08:07 PM   #15
Tech Initiate
 
Join Date: Aug 2006
Posts: 22
Default

I can only get fuel to flow when I blow on the pressure line. What does that mean?
Mann2006 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Converting Rotary Carb to Slide Carb? hrnts69 Nitro Off-Road 1 07-18-2008 12:29 PM
WTB 11L ROTARY CARB FOR .18TZ, HAVE NEW SLIDE CARB TO TRADE? SHAGGS R/C Items: Wanted to Buy 0 12-01-2006 03:34 PM
fuel wont go into carb tiger266 Nitro On-Road 9 07-27-2005 04:23 PM
Sirio .12 with Novarossie Carb -CX12 carb fit? au_Nightmare Onroad Nitro Engine Zone 10 09-25-2004 09:29 AM
Spitting fuel out of carb ottoman Onroad Nitro Engine Zone 1 04-25-2004 05:45 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off



All times are GMT -7. It is currently 07:39 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net