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what is the sign of a mis-firing cylinder?

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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

what is the sign of a mis-firing cylinder?

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Old 01-07-2006, 03:21 PM
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thehourg
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Default what is the sign of a mis-firing cylinder?

how would i know if a cylinder was not firing properly? i know i would suffer a lot of power loss, but other than that?
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Old 01-07-2006, 03:27 PM
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grabbem88
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Default RE: what is the sign of a mis-firing cylinder?

check your plugs see what condition they are in.
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Old 01-07-2006, 03:36 PM
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thehourg
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Default RE: what is the sign of a mis-firing cylinder?

well i was detonating a while back, but i have since cleared that up, some plugs are normal color and smell, but there was one in particular that was kinda white? stupid question, waht does this mean, is it running lean?
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Old 01-07-2006, 03:39 PM
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grabbem88
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Default RE: what is the sign of a mis-firing cylinder?

on the back of my haynes man. it shows lean...or to hot of a plug/gap range??
injector could be clogged?
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Old 01-07-2006, 03:43 PM
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marx91
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Default RE: what is the sign of a mis-firing cylinder?

if a cylinder wasnt firing that plug would be fouled (black)
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Old 01-07-2006, 03:48 PM
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thehourg
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Default RE: what is the sign of a mis-firing cylinder?

is there any other warning signs of a cylinder not firing, that i would be able to tell while driving? would the car even drive at all?
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Old 01-07-2006, 03:55 PM
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grabbem88
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Default RE: what is the sign of a mis-firing cylinder?

it would drive,but you would know it....it would run really rough.
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Old 01-07-2006, 03:58 PM
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5.0 MPG
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Default RE: what is the sign of a mis-firing cylinder?

The car will drive in most instances. The most relaible sign is a lost of power, idling problems. The easiest way to check is with a multi meter. Then inspect the cap and rotor for looseness and cracks. Check the continuity of each wire. If there are no problems there inspect your plugs. When was the last time you changed them?
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Old 01-07-2006, 04:04 PM
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bobby
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Default RE: what is the sign of a mis-firing cylinder?

if u had like 2 wires crossed you wouldnt really be able to tell if u werent use to ur car and it was just sitting in the garage or whatever and u started/revved it. I had two wires crossed for a year andthe car sounded fine until i took it on the road and drove it. Got out the firing order and fixed in the OMG what a difference!
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Old 01-07-2006, 04:10 PM
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thehourg
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Default RE: what is the sign of a mis-firing cylinder?

sweet, thank's guy's for the info! i dont have a problem there...
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