Issues please look.
Thread Starter
ISIS SUCKS FAT CHOAD
Joined: Oct 2008
Posts: 8,124
Likes: 53
From: Earth, United States
Issues please look.
Ok so I was driving to work everything was good to go. I get off the interstate and stop at a light. When I went to take off the engine sounded like a wrx boxer engine. I can smell fuel and the car is running like crap and has reduced power. No check engine lights oil pressure is good cooling temp is normal. Fuel pressure is normal. No signs of a fuel leak. I can really smell the fuel from the tail pipe extra strong.
It's consuming gas at an alarming rate a quarter tank in 40 miles.
Blown 383 stroker upgraded everything.
It's consuming gas at an alarming rate a quarter tank in 40 miles.
Blown 383 stroker upgraded everything.
Team Owner
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From: Oklahoma City OK
C6 of Year Finalist (appearance mods) 2019
Tech Contributor
Joined: Dec 1999
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
If you see reduced power,,, you have to have DTCs!! How are you reading them??? normally Reduced power deals with the throttle by wire system but, it can be set off by other faults.Are you reading them with the engine running as soon as the issue happens OR turning the engine OFF and then reading them.
BC
Thread Starter
ISIS SUCKS FAT CHOAD
Joined: Oct 2008
Posts: 8,124
Likes: 53
From: Earth, United States
Ok so I pulled the plugs and upon doing so i discovered that the #7 Spark Plug was mashed together as depicted. I pulled the rest of the plugs and they all looked fine. No signs of detonation. My next step was to pull the Valve cover on the Driver Side (number 7 cylinder side) After pulling the Valve covers I removed the rocker to the number 7 Intake Valve and the spring, retainer and Keepers as well as the tip of the valve came with it. Gemtlemen, I believe I found my problem. After talking to BlownBlueZO6 he told me that number 7 cylinder usually runs hot and that the stock heads are known for the valve guides coming loose. Anyway I will tear the engine down to determine cause of failure. Looks like I'm going to have a 427 Built with some aftermarket heads. I'm going to pick up some AFR heads. Anyway, here's some pics.
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Thread Starter
ISIS SUCKS FAT CHOAD
Joined: Oct 2008
Posts: 8,124
Likes: 53
From: Earth, United States
Thanks man. I guess it the nature of the beast. I guess the good part is the car actually does still run and drive. What I'm going to do is tear the engine down and sell what I can to fund some of the new build.
Tech Contributor
Joined: Jan 2007
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From: Dyer, IN
Just curious. Did you have the rear coolant air bleeds blocked off?
Thread Starter
ISIS SUCKS FAT CHOAD
Joined: Oct 2008
Posts: 8,124
Likes: 53
From: Earth, United States
I'm pretty sure it was done right. I think this is just a case of component failure. possibly due to the cylinder head used. I'll know more once I get it disassembled.
Tech Contributor
Joined: Jan 2007
Posts: 19,398
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From: Dyer, IN
1) Modified LS1, and rear coolant air bleeds blocked off.
2) LS6
No biggie, just wondering if the trend continues.
Thread Starter
ISIS SUCKS FAT CHOAD
Joined: Oct 2008
Posts: 8,124
Likes: 53
From: Earth, United States
Time for an Iron BLock 427 with AFR or Trick Flow heads.
Unless the LS6 is completely undamaged (highly unlikely) but in which case I'll see what caused the valve to faile (i.e. cylinder heads) and I'll fix it.
Tech Contributor
Joined: Dec 2006
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From: Van Buren Arkansas
Wounded Warrior Escort '11
Bummer for sure. If it was tagged by the piston, you might want to consider looking at the bottom end too...unless you are going to a new engine as you were mentioning.
Thread Starter
ISIS SUCKS FAT CHOAD
Joined: Oct 2008
Posts: 8,124
Likes: 53
From: Earth, United States
Thread Starter
ISIS SUCKS FAT CHOAD
Joined: Oct 2008
Posts: 8,124
Likes: 53
From: Earth, United States
I was just thinking, this is a text I just sent to Brett.
Hey I was just thinking. Those heads are stock right with stock valves and upgraded springs? With that said, do you think that the seat and opening pressure that those aftermarket springs create are too much for the stock valves to handle? Maybe that's what pulled the valve apart. I mean maybe that along with the increase of cylinder pressure and temperature due to the blower caused the failure. I guess there's no way to know for sure until I get it apart.
What do u think?
Hey I was just thinking. Those heads are stock right with stock valves and upgraded springs? With that said, do you think that the seat and opening pressure that those aftermarket springs create are too much for the stock valves to handle? Maybe that's what pulled the valve apart. I mean maybe that along with the increase of cylinder pressure and temperature due to the blower caused the failure. I guess there's no way to know for sure until I get it apart.
What do u think?
Tech Contributor
Joined: Dec 1999
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Yea,, stock valves do not like sever duty. I guess you will know more when you get the heads off.
If the valve is in the cylinder,,
It doent look good.
BC
If the valve is in the cylinder,,
It doent look good.BC
Thread Starter
ISIS SUCKS FAT CHOAD
Joined: Oct 2008
Posts: 8,124
Likes: 53
From: Earth, United States
