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02-20-2010, 01:23 PM
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#1 |
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Registered User
Join Date: Nov 2008
Location: Columbia SC
Posts: 231
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two questions
What would cause the exhaust donut to burn out over a three month time period? I got two from O’Rielys today. The passenger side had nothing and the driver side looked pretty bad. Could the exhaust shop have put in cheap ones?
The yellow wire on the started solenoid what is it for? Mine was cut and I fixed it today. But it was starting???
__________________
Chief mechanic for my, 54 Belair, 64 Corvair, 72 C/10Fleetside and 2002Tahoe. John 14:6 Jesus said, "I am the way, the truth, and the life. No one comes to the Father except through Me. My Book "Why Cancer is Not Bad Luck" by WestBow press |
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02-20-2010, 01:26 PM
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#2 |
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Registered User
Join Date: Dec 2007
Location: Nanaimo B.C.
Posts: 604
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Re: two questions
if the exhaust was loose it may cause it to fail and the yellow wire is for a 12 volt jump to the dizy on start up
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I was hooked on these trucks since 1982 when I drove my budys fathers 1968 Custum GMC 396 automatic dana 60 rear with a power lock diff what a ride more fun then we will we can ever tell!! |
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02-20-2010, 01:34 PM
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#3 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: two questions
if you have HEI dizzy yellow wire not needed
also bad timing or even running lean will cause donut burnout
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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02-20-2010, 03:38 PM
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#4 |
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Registered User
Join Date: Nov 2008
Location: Columbia SC
Posts: 231
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Re: two questions
how do I know if is is running lean?
__________________
Chief mechanic for my, 54 Belair, 64 Corvair, 72 C/10Fleetside and 2002Tahoe. John 14:6 Jesus said, "I am the way, the truth, and the life. No one comes to the Father except through Me. My Book "Why Cancer is Not Bad Luck" by WestBow press |
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02-20-2010, 03:54 PM
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#5 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: two questions
read sparkplugs condition service manuals have charts for this
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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02-20-2010, 05:45 PM
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#6 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: two questions
do you have exhaust manifolds, or headers?
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02-20-2010, 06:49 PM
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#7 |
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Registered User
Join Date: Nov 2008
Location: Columbia SC
Posts: 231
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Re: two questions
Exhaust manifolds but the carb has not been rebuilt so I guess it might be running lean? I timed it the ether day and tightened up the exhaust today.
__________________
Chief mechanic for my, 54 Belair, 64 Corvair, 72 C/10Fleetside and 2002Tahoe. John 14:6 Jesus said, "I am the way, the truth, and the life. No one comes to the Father except through Me. My Book "Why Cancer is Not Bad Luck" by WestBow press |
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02-20-2010, 07:08 PM
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#8 |
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Registered User
 
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,641
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Re: two questions
The donuts tend to go away if the engine moves a lot due to worn mounts or if the exhaust moves around a bit or doesn't move with the engine due to the way it is mounted.
Also the factory setup had what looked like a sleeve inside the donut and a lot of muffler shop pipes don't have that and that can let the donut burn out sometimes. |
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