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Unread 03-29-2010, 01:48 PM   #16
metalroses
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1989 YJ Wrangler 
 
Join Date: Apr 2009
Location: Puerto Rico
Posts: 153
Quote:
Originally Posted by Que89YJ View Post
If I am understanding you, the Jeep has an unsteady idle where its shifting up and downn RPM constantly and a stall as well? I know you said you check for a vacuum leak, did you check with starter fluid or brake cleaner. Could you have a problem with the carb? How long after you did the Nutter and team Rush mods did you start to have the problem?
ive started to have this problem since ive changed the o2 sensor, oh wait i installed a new diagraphm accelerator pump..... but i don't think this is the problem. starter fluid? i dont think that should be the problem since this happened afer ive changed de sensor.

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Unread 03-29-2010, 01:55 PM   #17
Burnerman
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1989 YJ Wrangler 
 
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Quote:
i installed a new diaphram accelerator pump..... but i don't think this is the problem.
You installed the accelerator pump plunger in the carb? If it just stalls out when idling down the idle tubes are clogged. Carters have issues with the idle tubes and any disturbance in the fuel system can clog the tubes up. tiny bit of rust, dirt,anything get up into the tubes and then you have no idle.>http://home.sprynet.com/~dale02/idle.htm
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Unread 03-29-2010, 02:12 PM   #18
metalroses
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Quote:
Originally Posted by Burnerman View Post
You installed the accelerator pump plunger in the carb? If it just stalls out when idling down the idle tubes are clogged. Carters have issues with the idle tubes and any disturbance in the fuel system can clog the tubes up. tiny bit of rust, dirt,anything get up into the tubes and then you have no idle.>http://home.sprynet.com/~dale02/idle.htm
ok i have the mc2100 carb and after the new acc pump the jeep was good but i changed it because it was stalling when i accelerated fast. but ill chek that cause it can be applied too for this carb
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Unread 03-29-2010, 03:06 PM   #19
Que89YJ
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1989 YJ Wrangler 
 
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It makes more sense. The starter fluid or brake cleaner can be sprayed lightly around the engine compartment to look for a change in idle from a vacuum leak.
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Unread 04-02-2010, 07:23 PM   #20
metalroses
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ive did everything and nothing! im so lucky with this carb engine haahah!
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Unread 04-03-2010, 01:55 PM   #21
metalroses
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1989 YJ Wrangler 
 
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Quote:
Originally Posted by Burnerman View Post
You installed the accelerator pump plunger in the carb? If it just stalls out when idling down the idle tubes are clogged. Carters have issues with the idle tubes and any disturbance in the fuel system can clog the tubes up. tiny bit of rust, dirt,anything get up into the tubes and then you have no idle.>http://home.sprynet.com/~dale02/idle.htm
the idle tubes of the mc2100 are inside the buster venturi?
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