New Carb..New Starting issues - Page 2 -
LinkBack Thread Tools
post #16 of 16 Old 01-30-2013, 08:44 AM
Web Wheeler
lucdog's Avatar
1980 CJ5 
Join Date: Jul 2006
Posts: 8,771
Originally Posted by Oily

I see you have a son, but I am not sure how familiar you are with carburated engines. In my opinion, your restart procedure for a warm engine is wrong. Your flooding your engine. Owner's manuals used to state that to start a warm engine, to hold the accelerator pedal a quarter to half way to the floor then crank. Sitting warm will vaporize the existing fuel causing a rich effect which needs more air to lean it out. Holding it at wide open dumps a lot of fuel in an already "flooded"/rich with fuel oxygen environment. Pumping twice after that just exasperates the flooded condition.
I can't think of a good reason why pumping the crap out of it seems to work but I think it is happenstance to other conditions.
Try it again with just depressing the gas pedal a quarter of the way. If it doesn't start, quit cranking but do not let off the pedal. Try again in about 15 to 30 seconds. By the way, it is recommended not to crank longer than 15/20 second intervals to keep the starter from getting hot, eliminating premature starter failure.
Hope this helps, .
I believe this way has been pretty much standard procedure since I started driving in 1971. Also, with a flooded engine you hold the gas pedal on the floor for 30 or so seconds, leave it on the floor and crank the engine till it starts, slowly backing of the gas after it fires up.
If after doing what oily said and it doesn't want to start, put a couple table spoons of gas down the carb. Hold the gas pedal down 1/4 way, see if it will start then. If it does this would show a supply problem.


1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
lucdog is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

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 Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome