'97 GC hesitation...
 

my '97 GC frequently has a brief hesitation after restarting a warm engine.
(I6.) When cold, I never notice a hesitation at all. I can drive until it
reaches operating temp. If I restart the engine before it completely cools
down, it will hesitate some on the first acceleration. It will occasionally
have a very mild backfire or 'pop' sound, then accelerate normally and run
fine the rest of the drive. This has never happened when cold. It starts
fine (within a couple turns of the engine..) Any ideas?

thanks,
cal

Re: '97 GC hesitation...
 

Hi Cal,
Weak ignition wire or spark plug. It would show up instantly on an
oscilloscope. The unburned gas is ignited with the next firing cylinder.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Cal wrote:
>
> my '97 GC frequently has a brief hesitation after restarting a warm engine.
> (I6.) When cold, I never notice a hesitation at all. I can drive until it
> reaches operating temp. If I restart the engine before it completely cools
> down, it will hesitate some on the first acceleration. It will occasionally
> have a very mild backfire or 'pop' sound, then accelerate normally and run
> fine the rest of the drive. This has never happened when cold. It starts
> fine (within a couple turns of the engine..) Any ideas?
>
> thanks,
> cal

Re: '97 GC hesitation...
 

Hi Cal,
Weak ignition wire or spark plug. It would show up instantly on an
oscilloscope. The unburned gas is ignited with the next firing cylinder.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Cal wrote:
>
> my '97 GC frequently has a brief hesitation after restarting a warm engine.
> (I6.) When cold, I never notice a hesitation at all. I can drive until it
> reaches operating temp. If I restart the engine before it completely cools
> down, it will hesitate some on the first acceleration. It will occasionally
> have a very mild backfire or 'pop' sound, then accelerate normally and run
> fine the rest of the drive. This has never happened when cold. It starts
> fine (within a couple turns of the engine..) Any ideas?
>
> thanks,
> cal

Re: '97 GC hesitation...
 

Hi Cal,
Weak ignition wire or spark plug. It would show up instantly on an
oscilloscope. The unburned gas is ignited with the next firing cylinder.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Cal wrote:
>
> my '97 GC frequently has a brief hesitation after restarting a warm engine.
> (I6.) When cold, I never notice a hesitation at all. I can drive until it
> reaches operating temp. If I restart the engine before it completely cools
> down, it will hesitate some on the first acceleration. It will occasionally
> have a very mild backfire or 'pop' sound, then accelerate normally and run
> fine the rest of the drive. This has never happened when cold. It starts
> fine (within a couple turns of the engine..) Any ideas?
>
> thanks,
> cal

Re: '97 GC hesitation...
 

Hi Cal,
Weak ignition wire or spark plug. It would show up instantly on an
oscilloscope. The unburned gas is ignited with the next firing cylinder.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Cal wrote:
>
> my '97 GC frequently has a brief hesitation after restarting a warm engine.
> (I6.) When cold, I never notice a hesitation at all. I can drive until it
> reaches operating temp. If I restart the engine before it completely cools
> down, it will hesitate some on the first acceleration. It will occasionally
> have a very mild backfire or 'pop' sound, then accelerate normally and run
> fine the rest of the drive. This has never happened when cold. It starts
> fine (within a couple turns of the engine..) Any ideas?
>
> thanks,
> cal

Re: '97 GC hesitation...
 

L.W. ("ßill") ------ III did pass the time by typing:
> Hi Cal,
> Weak ignition wire or spark plug. It would show up instantly on an
> oscilloscope. The unburned gas is ignited with the next firing cylinder.

Or coil. When my coil was going I got the same hesitation till it just
simply wouldn't start. (too bad they won't let folks just hit the coil
with a blast of freon to cool it off) :) That was an easy check.

> Cal wrote:
>>
>> my '97 GC frequently has a brief hesitation after restarting a warm engine.
>> (I6.) When cold, I never notice a hesitation at all. I can drive until it
>> reaches operating temp. If I restart the engine before it completely cools
>> down, it will hesitate some on the first acceleration. It will occasionally
>> have a very mild backfire or 'pop' sound, then accelerate normally and run
>> fine the rest of the drive. This has never happened when cold. It starts
>> fine (within a couple turns of the engine..) Any ideas?
>>
>> thanks,
>> cal

Re: '97 GC hesitation...
 

L.W. ("ßill") ------ III did pass the time by typing:
> Hi Cal,
> Weak ignition wire or spark plug. It would show up instantly on an
> oscilloscope. The unburned gas is ignited with the next firing cylinder.

Or coil. When my coil was going I got the same hesitation till it just
simply wouldn't start. (too bad they won't let folks just hit the coil
with a blast of freon to cool it off) :) That was an easy check.

> Cal wrote:
>>
>> my '97 GC frequently has a brief hesitation after restarting a warm engine.
>> (I6.) When cold, I never notice a hesitation at all. I can drive until it
>> reaches operating temp. If I restart the engine before it completely cools
>> down, it will hesitate some on the first acceleration. It will occasionally
>> have a very mild backfire or 'pop' sound, then accelerate normally and run
>> fine the rest of the drive. This has never happened when cold. It starts
>> fine (within a couple turns of the engine..) Any ideas?
>>
>> thanks,
>> cal

Re: '97 GC hesitation...
 

L.W. ("ßill") ------ III did pass the time by typing:
> Hi Cal,
> Weak ignition wire or spark plug. It would show up instantly on an
> oscilloscope. The unburned gas is ignited with the next firing cylinder.

Or coil. When my coil was going I got the same hesitation till it just
simply wouldn't start. (too bad they won't let folks just hit the coil
with a blast of freon to cool it off) :) That was an easy check.

> Cal wrote:
>>
>> my '97 GC frequently has a brief hesitation after restarting a warm engine.
>> (I6.) When cold, I never notice a hesitation at all. I can drive until it
>> reaches operating temp. If I restart the engine before it completely cools
>> down, it will hesitate some on the first acceleration. It will occasionally
>> have a very mild backfire or 'pop' sound, then accelerate normally and run
>> fine the rest of the drive. This has never happened when cold. It starts
>> fine (within a couple turns of the engine..) Any ideas?
>>
>> thanks,
>> cal

Re: '97 GC hesitation...
 

L.W. ("ßill") ------ III did pass the time by typing:
> Hi Cal,
> Weak ignition wire or spark plug. It would show up instantly on an
> oscilloscope. The unburned gas is ignited with the next firing cylinder.

Or coil. When my coil was going I got the same hesitation till it just
simply wouldn't start. (too bad they won't let folks just hit the coil
with a blast of freon to cool it off) :) That was an easy check.

> Cal wrote:
>>
>> my '97 GC frequently has a brief hesitation after restarting a warm engine.
>> (I6.) When cold, I never notice a hesitation at all. I can drive until it
>> reaches operating temp. If I restart the engine before it completely cools
>> down, it will hesitate some on the first acceleration. It will occasionally
>> have a very mild backfire or 'pop' sound, then accelerate normally and run
>> fine the rest of the drive. This has never happened when cold. It starts
>> fine (within a couple turns of the engine..) Any ideas?
>>
>> thanks,
>> cal

Re: '97 GC hesitation...
 

A coil going bad for me acts like a rev limiter, I don't notice the
backfire, just lack of power.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

DougW wrote:
>
> Or coil. When my coil was going I got the same hesitation till it just
> simply wouldn't start. (too bad they won't let folks just hit the coil
> with a blast of freon to cool it off) :) That was an easy check.