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1995 mazda, stumbles upon acceleration


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gahumble
User

Apr 13, 2012, 9:36 PM

Post #1 of 8 (1123 views)
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     1995 mazda, stumbles upon acceleration  

i have a 1995 mazda 626 2.5L, 5sdp. it hesitates/stumbles upon acceleration until 1600 - 2000 rpm then runs ok. replaced plugs, dist cap, rotor appears ok. wires resitance under 11k ohms/3ft. new fuel pump/strainer/filter. 2 stage injector service(manifold and fuel additive) also tried a known working MAF meter. any ideas?


Discretesignals
Veteran / Moderator


Apr 13, 2012, 10:57 PM

Post #2 of 8 (1074 views)
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     Re: 1995 mazda, stumbles upon acceleration [In reply to]  

Check engine light on? You try a coil output test. Good coil should be able to produce a spark that jumps 3/4 of an inch.





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gahumble
User

Apr 14, 2012, 11:06 AM

Post #3 of 8 (1036 views)
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     Re: 1995 mazda, stumbles upon acceleration [In reply to]  

no eng. light, will ck coil. thank you


gahumble
User

Apr 15, 2012, 4:12 PM

Post #4 of 8 (998 views)
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     Re: 1995 mazda, stumbles upon acceleration [In reply to]  

it has an integral coil ?


Hammer Time
Ultimate Carjunky / Moderator


Apr 15, 2012, 4:15 PM

Post #5 of 8 (994 views)
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     Re: 1995 mazda, stumbles upon acceleration [In reply to]  


Quote
t has an integral coil


That makes it harder to get to but it can still fail. In this case you would have to test at the end of the plug wire.




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
Veteran / Moderator


Apr 15, 2012, 4:50 PM

Post #6 of 8 (985 views)
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     Re: 1995 mazda, stumbles upon acceleration [In reply to]  

Pull the distributor cap off and you'll see the coil lead. Take a 12 volt test lamp connected to battery ground. Hold the probe of the test lamp against the coil lead while someone cranks the engine. Pull the probe away from the lead and see how far the spark can jump to your test lamp while the engine is cranking. Should be able to jump 3/4 inch gap with no problem. Don't crank the engine with the cap off without something for the spark to jump to though.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


gahumble
User

Feb 6, 2013, 1:39 PM

Post #7 of 8 (569 views)
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     Re: 1995 mazda, stumbles upon acceleration [In reply to]  

never got the car back. lady sold it as is


Discretesignals
Veteran / Moderator


Feb 6, 2013, 6:57 PM

Post #8 of 8 (558 views)
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     Re: 1995 mazda, stumbles upon acceleration [In reply to]  

I guess that is the monkey off your back. Thanks for the follow up. Thread closed.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.




1995 mazda, stumbles upon acceleration


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