Help, what happened?

KiltedBanshees93GT · 07-13-2004, 10:25 AM

I checked the plugs on my 66 yesterday, due to it sounding like it had fouled one. The nubmber 5 plug was not only oil fouled, but had small metal chips in it with no damage to the actual plug. I did a compression check on that cyl, along w/ no 6, and it only showed 50lbs on #5, and 120 on 6. Any ideas on what let loose? I reinderted the plug after cleaning, and it was immediatly covered in oil again.

Help!

NitroStanggirl · 07-13-2004, 11:13 AM

I would say one of your rings let go. Either that or you got something in there and you have a big gouge in your cylinder wall. If your valves had let go, there wouldn't be oil, and you would have 0 compression.

rwhite65 · 07-16-2004, 09:27 PM

I think Nitrostanggirl has u in the right direction, even though that is not what u want to hear...sorry dude. Have u drained the oil and looked at it, looked to see if there was any metal in the pan? One of the guys on here wrote a great post on vacuum tests (which I copied into a diagnosis folder), but I can not remember who posted it so I can give credit where it is due. In that post, I am under the impression the vacuum test will help tell if it is rings or not, but I am not sure if it tells u all your rings are bad...or can help tell if just cylinder #5 is bad.
How many miles are on the engine?
Ryan

KiltedBanshees93GT · 07-17-2004, 10:18 AM

Thanks for the replys, sorry about taking so long to reply, but we dont have net access yet, so I'm on a comp at the library

Ryan, could you possibly pm me that vacum test info anyway? I think I read the same bit, but cant remember the particulars.
I kinda expect it'll be the rings, would that account for the loud ticking too? Whats a ring job cost anyway?
Well, now I have to get her towed to our new place, where I wont be able to work on her. But on the good side, I guess it gives me an excuse to start saving toward that 351,lol.

Thanks,
J
BTW, the motor is pushing 60k, and was running strong. I dont
think it had rolled over, but I could be wrong.

07-13-2004, 10:25 AM	#1
KiltedBanshees93GT Registered Member Join Date: Jun 2000 Location: Pigeon Forge Tn Posts: 611	Help, what happened? I checked the plugs on my 66 yesterday, due to it sounding like it had fouled one. The nubmber 5 plug was not only oil fouled, but had small metal chips in it with no damage to the actual plug. I did a compression check on that cyl, along w/ no 6, and it only showed 50lbs on #5, and 120 on 6. Any ideas on what let loose? I reinderted the plug after cleaning, and it was immediatly covered in oil again. Help! __________________ ____________ '66 Mustang Coupe- AKA "Lenore" on disability for a (long) bit '93 GT Mostly stock AKA "Fawkes" Rice Haters Club Member #239 "I find your lack of faith...disturbing." "Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats." H. L. Mencken

07-13-2004, 11:13 AM	#2
NitroStanggirl Registered Member Join Date: Oct 2001 Location: Idaho Falls, ID USA Posts: 42	I would say one of your rings let go. Either that or you got something in there and you have a big gouge in your cylinder wall. If your valves had let go, there wouldn't be oil, and you would have 0 compression. __________________ 1970 Mustang Fastback; beefed up 351C should be making around 500hp.

07-16-2004, 09:27 PM	#3
rwhite65 Ride Hard Join Date: Oct 2000 Location: Wyoming IL Posts: 1,094	I think Nitrostanggirl has u in the right direction, even though that is not what u want to hear...sorry dude. Have u drained the oil and looked at it, looked to see if there was any metal in the pan? One of the guys on here wrote a great post on vacuum tests (which I copied into a diagnosis folder), but I can not remember who posted it so I can give credit where it is due. In that post, I am under the impression the vacuum test will help tell if it is rings or not, but I am not sure if it tells u all your rings are bad...or can help tell if just cylinder #5 is bad. How many miles are on the engine? Ryan __________________ 65 Fastback 91 roller 306, H/C/I AOD-Bauman, PI Stallion, 4.10's and traction loc 04 Grand Cherokee Freedom Edition 79 Ford F-250 4x4 - Restored

07-17-2004, 10:18 AM	#4
KiltedBanshees93GT Registered Member Join Date: Jun 2000 Location: Pigeon Forge Tn Posts: 611	Thanks for the replys, sorry about taking so long to reply, but we dont have net access yet, so I'm on a comp at the library Ryan, could you possibly pm me that vacum test info anyway? I think I read the same bit, but cant remember the particulars. I kinda expect it'll be the rings, would that account for the loud ticking too? Whats a ring job cost anyway? Well, now I have to get her towed to our new place, where I wont be able to work on her. But on the good side, I guess it gives me an excuse to start saving toward that 351,lol. Thanks, J BTW, the motor is pushing 60k, and was running strong. I dont think it had rolled over, but I could be wrong. __________________ ____________ '66 Mustang Coupe- AKA "Lenore" on disability for a (long) bit '93 GT Mostly stock AKA "Fawkes" Rice Haters Club Member #239 "I find your lack of faith...disturbing." "Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats." H. L. Mencken

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