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Help!!!
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http://www.clubcobra.com/forums/backdraft-racing/128431-help.html)
| genolan |
04-03-2014 04:35 PM |
Help!!!
Just took the car for a nice ride pretty hard and it ran great. went back out and it started to shutter going up the driveway really rough under load. When I rev it in neutral it seems fine with just a little roughness. I turned it off and restarted and it smokes out the passenger headers. The smoke is on the white side with no distinct smell. I did notice that the one spark plug wire was kinda burnt but not melted. Could this be the cause or did something really bad go wrong. I tried to see if the spark was shorting to the header but couldn't see anything. Head gasket?
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| mln385 |
04-03-2014 04:41 PM |
Picture of plug wire may help, if it is shorting to the block or header this would be a symptom.
Check your dizzy cap too, center tab might have an issue. Look for tracking inside or a possible cracked rotor.
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| genolan |
04-03-2014 04:49 PM |
The headers are to hot to get the wire off. I did shove a paint stirrer between the wire and headers since wood is an insulator but no change. Would it smoke if one cylinder was not firing?
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| genolan |
04-03-2014 04:53 PM |
The engine doesn't make any bad noises like knocking just rough and smoke out the passenger exhaust.
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| 392cobra |
04-03-2014 04:54 PM |
Could be the intake manifold and/or head gasket. Sucking anti-freeze into 1 or cylinders.
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| mln385 |
04-03-2014 04:59 PM |
Quote:
Originally Posted by genolan
(Post 1293839)
The engine doesn't make any bad noises like knocking just rough and smoke out the passenger exhaust.
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Is it smoke or unburnt fuel from a cylinder not firing? Pull the dizzy cap and take a look. It will take all of five minutes. |
| genolan |
04-03-2014 05:05 PM |
just looked at the cap and it seems ok, The smoke had no real smell and was on the white side. I'm not sure what unburnt fuel looks like
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| mln385 |
04-03-2014 05:08 PM |
Grayish white mist if you don't smell or taste antifreeze, probably isn't head gasket. sounds electrical or electronic.
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| mln385 |
04-03-2014 05:11 PM |
Let it cool down pop some plugs and see what they look like, or if you have an IR hand thermometer start it up and check all your header exhaust port temps. if one or more is cooler than the rest you have a cylinder not firing.
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| genolan |
04-03-2014 05:40 PM |
just pulled the wire off and it was melted pretty bad with the conductor showing. I'm trying to post a picture. Just so I don't freak out white gray smoke can be unburnt fuel?
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| genolan |
04-03-2014 05:50 PM |
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| 392cobra |
04-03-2014 05:58 PM |
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| genolan |
04-03-2014 06:04 PM |
Thanks for posting the picture Fred
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| 392cobra |
04-03-2014 06:10 PM |
Wouldn't hurt to check your oil condition and coolant for anything out of norm.
Could help your peace of mind too.
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| mln385 |
04-04-2014 05:20 AM |
Quote:
Originally Posted by 392cobra
(Post 1293855)
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Looks like the terminal end is exposed which would create the arc to ground. I would replace and start her up.:) |
| genolan |
04-04-2014 08:42 AM |
Headed to the local speed shop to get a new wire, plug and heat sock. I'm keeping my fingers crossed that this solves the problem.
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| mln385 |
04-04-2014 12:35 PM |
Good luck let us know how you make out.
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| genolan |
04-04-2014 02:22 PM |
Just replaced the wire and plug and No Good same problem. I checked the coolant overflow tank and it's half full but I have no reference point to compare with. It's looking more and more like head gasket.
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| 392cobra |
04-04-2014 02:30 PM |
I was afraid of that,damn.
Get yourself a Cooling System Pressure Tester. Craftsman make a nice one.
It will help you find the leak without just going in and replacing all the gaskets.
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| genolan |
04-04-2014 02:58 PM |
A friend told me to stick my fingers in each side pipe and see if one is slippery and it is. The cause is coolant in the pipes. DAMM
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