Strange Hesitation please help!!!!
Thread Starter
Burning Brakes
Joined: May 2009
Posts: 787
Likes: 1
From: Hialeah Florida
Strange Hesitation please help!!!!
I have a 94 Vette 6 speed. Just recently it developed a hesitation under load. At wot it hesitates some time alot sometimes hardly noticible. It idles perfect and and when you give it gas at idle its very smooth. Now I have a question im not too familier with arcing spark plug wires. What exactly does that look like. I thought it might be that and changed the passenger side wires but still have to do the driver side but need some help with that. At neght when i give it gas i see like electricity running through the wires near the spark plugs and at the middle where the wire holders are at. Is this normal? The new wires are doing it as well. Any help would be apreciated. thanks.
Thread Starter
Burning Brakes
Joined: May 2009
Posts: 787
Likes: 1
From: Hialeah Florida
To update i went out and tried the car at wide open throttle and it hesitated the whole time. 1st gear was good with a slight hesitation at high rpm the second I hit 2nd it felt like I had a constant governer on my car limiting the power it hesitated throughout the entire rpm range.
Instructor
Joined: Nov 2001
Posts: 141
Likes: 0
From: Renton WA
What looks like electricity "leaking" out of the sparkplug boots where it connects to the sparkplug is normal. This phenomenon is normally seen only in very low/no light. It is know as a "corona". When removing the sparkplugs you will notice a band of clean area where there is no dirt. It is not electrical leakage. Look on wikipedia for an explanation if interested.
The sparkplug wires should not be arching anywhere. If they are, they are bad.
I'd start with good plug wires, spark plugs, and perhaps a new optispark since they're known for problems.
The sparkplug wires should not be arching anywhere. If they are, they are bad.
I'd start with good plug wires, spark plugs, and perhaps a new optispark since they're known for problems.
Last edited by Duntov85; Jan 2, 2010 at 04:42 PM.
Thread Starter
Burning Brakes
Joined: May 2009
Posts: 787
Likes: 1
From: Hialeah Florida
to be honest yes i did about a week before. I tried avoiding the optispark as best I could but it might have gotten wet. and no recent motor work has been done its relatively stock.
Last edited by darkstallion_69; Jan 2, 2010 at 10:03 PM.
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Race Director
Joined: Jan 2005
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From: Slidell Louisiana
How's your fuel pressure ,coil, any codes?
Mike
Safety Car
Joined: Dec 2007
Posts: 3,616
Likes: 5
From: Sandhills of North Carolina
with Mike, check for codes. Also, how's your injectors? Original? Changed gas stations recently? Are you running 93 octane gas?
Drifting
Joined: Aug 2009
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From: Tampa Fl
Race Director
Joined: Jan 2005
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From: Slidell Louisiana
Cruising
Joined: Nov 2009
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Likes: 0
I have very similar problems in my vette. Stutters at low revs. As the RPM starts to increase it smoothes out.
My first guess was the fuel injectors, as currently the stock injectors are on mine, 17 years old, and Ive read they are no where near as good as the new BOSCH IIIs and develop isssues
Ive ordered a set of injectors from fuelinjectorconnection so hope it helps. Will let you know how it goes.
My first guess was the fuel injectors, as currently the stock injectors are on mine, 17 years old, and Ive read they are no where near as good as the new BOSCH IIIs and develop isssues
Ive ordered a set of injectors from fuelinjectorconnection so hope it helps. Will let you know how it goes.
Thread Starter
Burning Brakes
Joined: May 2009
Posts: 787
Likes: 1
From: Hialeah Florida
Thread Starter
Burning Brakes
Joined: May 2009
Posts: 787
Likes: 1
From: Hialeah Florida
Thread Starter
Burning Brakes
Joined: May 2009
Posts: 787
Likes: 1
From: Hialeah Florida
today i drove the car the whole day with a light foot and it was fine. The only time it does it is at wot or for example when in 6th gear at 1100 rpm when you give it gas it hiccups, bucks and really bad.
Burning Brakes
Joined: Oct 2009
Posts: 773
Likes: 2
From: Minneapolis MN
If you tore everything down to get to opti just replace it-no sense in just replacing the cap & rotor when your there.The opti is also your cam sensor as well.Also there should be NO arcing out of wires & if new wires are arcing they are defective/bad.Fill an empty spray bottle full of water & mist spark plug wires checking for "leaking" spark.Get quality wires not cheapes.First fix arcing wire problem before doing anything else
Last edited by 94vettelover2; Jan 3, 2010 at 11:49 PM.
