Go Back  RCU Forums > Glow Engines, Gas Engines, Fuel & Mfg Support Forums > Gas Engines
Reload this Page >

GAS DRIPPING FROM MY 75 CC QUAD MOTOR

Community
Search
Notices
Gas Engines Questions or comments about gas engines can be posted here

GAS DRIPPING FROM MY 75 CC QUAD MOTOR

Thread Tools
 
Search this Thread
 
Old 03-18-2012, 03:49 PM
  #1  
comanche260c
Senior Member
Thread Starter
 
Join Date: Feb 2012
Location: manorville, NY
Posts: 131
Likes: 0
Received 0 Likes on 0 Posts
Default GAS DRIPPING FROM MY 75 CC QUAD MOTOR

Anyone know why gas would drip from carburator once its primed? I have bought a used p40 with a quad 75 cc motor and started it up today and it kept dripping. It has 2 hoses coming out the bottom. One is the vent and one is the fill Im not sure what one is wich at this time.. I filled tank half way and plugged one tube not sure what one i plugged.I suppose i plugged the one to the clunker because the open one didnt leak. Im assuming the open one is the vent. MY QUESTIONIS WHYISFUELDRIPPINGFROMCARBURATOR without stopping............Thank you for your help
Old 03-18-2012, 04:25 PM
  #2  
aussiesteve
Senior Member
 
aussiesteve's Avatar
 
Join Date: Oct 2005
Location: PerthWA, AUSTRALIA
Posts: 2,924
Likes: 0
Received 0 Likes on 0 Posts
Default RE: GAS DRIPPING FROM MY 75 CC QUAD MOTOR

Fuel dripping frmo the carb is a leaking diaphragm or needle in the carb. Get a Kit from your local saw shop and replace the diaphragms. Also get a can of carb cleaner and clean out the passages in the carb in the process.

As it is a used plane, I would suggest you open the tank and replace the lines in there as you may not know what condition they are in. That way you will also find out which line is which.

Use a Walbro felt clunk in the tank (Available from your local saw shop) and no other filters etc between the clunk ant the carb. For the fill line, I don't run a second clunk, I simply bend some tube down to the bottom of the tank and that becomes my fill / empty line.

We so often hear people with fuel system problems that end up being caused by old lines in tanks or tee pieces or filters in the line to the carb.
Old 03-18-2012, 04:40 PM
  #3  
MetallicaJunkie
 
MetallicaJunkie's Avatar
 
Join Date: Sep 2006
Location: Donna, TX
Posts: 5,464
Received 2 Likes on 2 Posts
Default RE: GAS DRIPPING FROM MY 75 CC QUAD MOTOR

what aussie said or....

u might need to use "W" tool to correctly adjust the metering lever height... mine was way too high.....correctly setting the height solved the dripping carb
Old 03-18-2012, 05:27 PM
  #4  
mikes68charger
My Feedback: (34)
 
Join Date: Oct 2010
Location: , OH
Posts: 1,962
Received 10 Likes on 8 Posts
Default RE: GAS DRIPPING FROM MY 75 CC QUAD MOTOR

whats this W tool you speak of? im haveing the same issue thanks


<br type="_moz" />
Old 03-18-2012, 07:37 PM
  #5  
Antique
Senior Member
My Feedback: (4)
 
Antique's Avatar
 
Join Date: Jul 2002
Location: Somewhere, DC
Posts: 9,825
Likes: 0
Received 0 Likes on 0 Posts
Default RE: GAS DRIPPING FROM MY 75 CC QUAD MOTOR

a Walbro service tool, sheet metal shaped like a W, show the correct height of the lever....
Old 03-18-2012, 09:06 PM
  #6  
MetallicaJunkie
 
MetallicaJunkie's Avatar
 
Join Date: Sep 2006
Location: Donna, TX
Posts: 5,464
Received 2 Likes on 2 Posts
Default RE: GAS DRIPPING FROM MY 75 CC QUAD MOTOR


ORIGINAL: mikes68charger

whats this W tool you speak of? im haveing the same issue thanks


<br type=''_moz'' />
http://www.ebay.com/itm/WALBRO-DIAPH...item19cb5e7ece

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



Contact Us - Manage Preferences Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.