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stumbles when warm

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Offline bvc

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stumbles when warm
« on: March 17, 2009, 07:34:16 PM »
my 1990 kick,when cold startup it seems to run well, no stumbling when under throttle but when it warms up it has a very bad dead spot right when you take off under load, when it stumbles i can pin it and it just about dies till i let off and apply power slowly, when revs get up it clears up  and goes well till next time i shift, any ideas, thought off plugs/wires but why smooth when cold/rich mode??
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Offline norcalwreckchaser

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Re: stumbles when warm
« Reply #1 on: March 17, 2009, 08:00:03 PM »
My guess is you may have a vacuum leak somewhere.
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Offline fuzzy1

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Re: stumbles when warm
« Reply #2 on: March 17, 2009, 08:44:27 PM »
Check out this page, scroll down to find the 'my engine is bogging' section.
Very detailed info there, hth

http://carfix.stufftoread.com/

With thanks to jtgh over at suzuki-forums.com :)
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Offline 88samuraion31s

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Re: stumbles when warm
« Reply #3 on: March 21, 2009, 05:42:59 PM »
my 88.8 samurai has been doing the same thing.. i have the 8 valve 1.6 in it and its the fuel pump thats the problem in my case.. acts how you said, for about the first minute after i start it it would run great, but then it just bogs down.. if you put the pedal to the floor does the engine just die?
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