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blazer eating spark plugs

Started by VisceralReaction, February 19, 2010, 10:56:41 AM

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VisceralReaction

February 19, 2010, 10:56:41 AM
Got an 84 K5 Blazer that eats plugs  ???
It runs great for about 6 months and then I have to swap out the plugs on it.
Does anyone have an idea why it would do that?
There are squirrels juggling knives in my head

ducpainter

#1
February 19, 2010, 10:59:25 AM
Quote from: VisceralReaction on February 19, 2010, 10:56:41 AM
Got an 84 K5 Blazer that eats plugs  ???
It runs great for about 6 months and then I have to swap out the plugs on it.
Does anyone have an idea why it would do that?
define eating...

electrode erosion...

fouling...

what?
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


angler

#2
February 19, 2010, 11:00:11 AM
What's wrong with the plugs?  Burned off tips, covered in black oil or what?  
Does it also eat oil?

<edit>
bit slow on the draw today....
996 forks, BoomTubes, frame sliders, CRG bar-end mirrors, vizitech integrated tail light, rizoma front turn signals, rizoma grips, cycle cat multistrada clip ons, pantah belt covers - more to come

The whole aim of practical politics is to keep the populace alarmed (and hence clamorous to be led to safety) by menacing it with an endless series of hobgoblins, all of them imaginary. H. L. Mencken

Popeye the Sailor

#3
February 19, 2010, 11:08:00 AM
Quote from: VisceralReaction on February 19, 2010, 10:56:41 AM
Got an 84 K5 Blazer that eats plugs  ???
It runs great for about 6 months and then I have to swap out the plugs on it.
Does anyone have an idea why it would do that?

Because it's a chevy?  ;D


We need more symptoms.
If the state had not cut funding for the mental institutions, this project could never have happened.

VisceralReaction

#4
February 19, 2010, 11:14:40 AM
No fouling, it's erosion of the side electrode.
Doesn't burn oil
There are squirrels juggling knives in my head

ducpainter

#5
February 19, 2010, 11:17:28 AM
Quote from: VisceralReaction on February 19, 2010, 11:14:40 AM
No fouling, it's erosion of the side electrode.
Doesn't burn oil
Always used to be indicative of a reaction with lead in the fuel.

Since there isn't any lead I'm thinking corrosion.

Does the rig sit a lot?
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


angler

#6
February 19, 2010, 11:23:41 AM Last Edit: February 19, 2010, 11:29:12 AM by angler
Cool NGK diagnostic chart
http://www.ngksparkplugs.com/tech_support/spark_plugs/faqs/faqread.asp

They list oxidation/corrosion, lead interaction, overheating.

Even better pictures and diagnostics
http://www.autohausaz.com/html/spark-plugs_spark-plug-wires.html
996 forks, BoomTubes, frame sliders, CRG bar-end mirrors, vizitech integrated tail light, rizoma front turn signals, rizoma grips, cycle cat multistrada clip ons, pantah belt covers - more to come

The whole aim of practical politics is to keep the populace alarmed (and hence clamorous to be led to safety) by menacing it with an endless series of hobgoblins, all of them imaginary. H. L. Mencken

VisceralReaction

#7
February 19, 2010, 11:25:38 AM
very cool, thanks. On some there is a huge carbon buildup.
One other it looks melted, I know this is worthless without pics but I'm at work.
I'll get pics when I can and revisit this unless anyone might have ideas to look at
There are squirrels juggling knives in my head

VisceralReaction

#8
February 19, 2010, 11:26:24 AM
yeah it used to sit all summer for some reason and was only driven in the winter
There are squirrels juggling knives in my head

angler

#9
February 19, 2010, 11:28:49 AM
Do you run a lot of fuel additives?  Do you have problems with detonation (pinging)?
996 forks, BoomTubes, frame sliders, CRG bar-end mirrors, vizitech integrated tail light, rizoma front turn signals, rizoma grips, cycle cat multistrada clip ons, pantah belt covers - more to come

The whole aim of practical politics is to keep the populace alarmed (and hence clamorous to be led to safety) by menacing it with an endless series of hobgoblins, all of them imaginary. H. L. Mencken

ducpainter

#10
February 19, 2010, 11:30:13 AM
I'm going with poor quality ethanol fuel.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


VisceralReaction

#11
February 19, 2010, 11:37:25 AM
Quote from: angler on February 19, 2010, 11:23:41 AM
Cool NGK diagnostic chart
http://www.ngksparkplugs.com/tech_support/spark_plugs/faqs/faqread.asp

They list oxidation/corrosion, lead interaction, overheating.

Even better pictures and diagnostics
http://www.autohausaz.com/html/spark-plugs_spark-plug-wires.html

According to the NGK chart its melting. Why would there be overheating
There are squirrels juggling knives in my head

ducpainter

#12
February 19, 2010, 11:40:17 AM
Quote from: VisceralReaction on February 19, 2010, 11:37:25 AM
According to the NGK chart its melting. Why would there be overheating
are they the right plug?
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


Oldfisti

#13
February 19, 2010, 11:42:23 AM
I once had an 84 K5 and from what I remember the carb was jetted way lean for emissions.

Add crap E-10 fuel to the mix and I could definitely see it running even leaner and melting plugs.
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VisceralReaction

#14
February 19, 2010, 11:42:42 AM
That i am not sure of. I'll have to check. ^
This is a new to me rig and trying to fix it's issues.
But hey it was free
There are squirrels juggling knives in my head
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