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Can an alternator cause a cylinder to mis fire?
LoP Guest
lop guest
User ID: 467473
10-12-2018 03:33 AM

 




Post: #31
RE: Can an alternator cause a cylinder to mis fire?
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if it cannot generate enough current to keep battery charged, you will have bad idling and timing when the spark plugs go off

get it tested!

or it's going to EXPLODE
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Dongfang Shou
Registered User
User ID: 467411
10-12-2018 03:34 AM

Posts: 1,478




Post: #32
RE: Can an alternator cause a cylinder to mis fire?
Bad wire or bad plug or bad coil
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Hrd2Stbd
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User ID: 462768
10-12-2018 03:36 AM

Posts: 3,248




Post: #33
RE: Can an alternator cause a cylinder to mis fire?
LoP Guest  Wrote: (10-12-2018 03:33 AM)
if it cannot generate enough current to keep battery charged, you will have bad idling and timing when the spark plugs go off

get it tested!

or it's going to EXPLODE

No. The alternator doesn't have anything to do with the ignition system. They are separate issues.

"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety."

-Benjamin Franklin

[Image: giphy.gif]

chuckle
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Dongfang Shou
Registered User
User ID: 467411
10-12-2018 03:37 AM

Posts: 1,478




Post: #34
RE: Can an alternator cause a cylinder to mis fire?
Pull plug on misfiring cylinder

Leave plug attached to wire

Have someone crank it over and watch the plug for spark

If no spark, check coil pack. If spark is seen check fuel injector .
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Dongfang Shou
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User ID: 467411
10-12-2018 03:41 AM

Posts: 1,478




Post: #35
RE: Can an alternator cause a cylinder to mis fire?
1. Most likely cause (bad spark plug wire)
2. Less likely cause (bad coil pack)
3. Last likely fouled plug
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LoP Guest
lop guest
User ID: 467381
10-12-2018 03:42 AM

 




Post: #36
RE: Can an alternator cause a cylinder to mis fire?
No Alt feeds Juice to Battery.
Has surge protection between all other things.

Generally Coil Pack needs replacing like he said.
Sometimes it would be spark plug replacement!
If you replace one plug, replace them all.

Could be a timing/crack sensor, RAIRLY though.
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LoP Guest
lop guest
User ID: 467381
10-12-2018 03:43 AM

 




Post: #37
RE: Can an alternator cause a cylinder to mis fire?
Could need STP, might just be Trash or water in fuel.
Could be new fuel filter.
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LoP Guest
lop guest
User ID: 467381
10-12-2018 03:44 AM

 




Post: #38
RE: Can an alternator cause a cylinder to mis fire?
BAD WIRE, Yep good call could be that also.
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Dongfang Shou
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User ID: 467411
10-12-2018 03:45 AM

Posts: 1,478




Post: #39
RE: Can an alternator cause a cylinder to mis fire?
He lives in North Carolina, so I suspect bad wire, with all the rain. To much moisture in the air and if he hasn't gave it a tune up the wire are prob shot.
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LunaC
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User ID: 441651
10-12-2018 03:46 AM

Posts: 15,858




Post: #40
RE: Can an alternator cause a cylinder to mis fire?
SS nailed it on post 2. If you have new wires and plugs check the plugs aren't covered in a sh*t ton of carbon. They can go bad fast if burning any oil. After that you're looking at a bad contact in the distributor if only one cylinder and consistent which one.

Fléctere Si Néqueo Súperos Acheronta Movebo
I never dreamed I'd grow up to be an asshole. But here I am. Killing it.
(This post was last modified: 10-12-2018 03:47 AM by LunaC.) Quote this message in a reply
Dongfang Shou
Registered User
User ID: 467411
10-12-2018 03:48 AM

Posts: 1,478




Post: #41
RE: Can an alternator cause a cylinder to mis fire?
Cheap easy way to check the spark plug wires for water shorts.

Spray WD40 on wires, if the misfire goes away then replace wires.

WD40 repels water.
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LoP Guest
lop guest
User ID: 352770
10-12-2018 03:49 AM

 




Post: #42
RE: Can an alternator cause a cylinder to mis fire?
the alternator supplies the current to the battery to the spark plugs!

GET IT TESTED OR ELSE!!!
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LunaC
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User ID: 441651
10-12-2018 03:53 AM

Posts: 15,858




Post: #43
RE: Can an alternator cause a cylinder to mis fire?
The Ghost Of LOP  Wrote: (10-12-2018 02:30 AM)
LoP Guest  Wrote: (10-12-2018 02:27 AM)
The timing belt may need adjusting. When the timing belt goes your engine will be rekt.

I don't know, The reason I thinking it's the Alternator is
My lights are really dim of a night to the point it looks like it not even on at times and when it rains. Also my left turn signal in the dash is doing strange things and fluctuating speed when my break is pressed and headlights are on. When I roll up my windows the lights flicker and also when i hit the breaks.


I think I may have a bad diode or something with the alternator....

These are symptoms of shorts. You are feeding current to these circuits when activating others. That would cause the symptom of dimming as the required current is bleeding out of the intended circuit.

Fléctere Si Néqueo Súperos Acheronta Movebo
I never dreamed I'd grow up to be an asshole. But here I am. Killing it.
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LoP Guest
lop guest
User ID: 423633
10-12-2018 03:54 AM

 




Post: #44
RE: Can an alternator cause a cylinder to mis fire?
lol @ most of the responses in this thread

Seriously:
Replace plug
Replace coil pack or wire (depends on how equipped)
Check fuel injector. Search google for how to do this, you will need an automotive stethoscope but you can do it with a long thin screwdriver
You can also pull the coil pack and test with ohmmeter (may as well disconnect the fuel injector and test those too)
If you can, pick up a NOID test kit - basically a bunch of light bulbs designed to fit into the coil harness and injector harness. This way you can check the harnesses.
Check for spark - get a spark tester, basically one end goes on the plug the other end goes into the wire/coil and it lights up
Vacuum leak
Also you can check Cylinder compression

Key is to start easy/cheap and work your way down.
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LoP Guest
lop guest
User ID: 348173
10-12-2018 03:55 AM

 




Post: #45
RE: Can an alternator cause a cylinder to mis fire?
silversides  Wrote: (10-12-2018 02:31 AM)
If you take out the spark plug and it is black or has oil on it, that might cause a problem.

If you take the plug to your stove burner you might be able to burn the crud off. You might also ruin the plug by unwelding it doing this also.

So have a extra plug...

LunaC  Wrote: (10-12-2018 03:46 AM)
SS nailed it on post 2. If you have new wires and plugs check the plugs aren't covered in a sh*t ton of carbon. They can go bad fast if burning any oil. After that you're looking at a bad contact in the distributor if only one cylinder and consistent which one.







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