Carbon Buildup
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=4084
Printed Date: November-23-2024 at 3:34pm
Topic: Carbon Buildup
Posted By: 77stang
Subject: Carbon Buildup
Date Posted: July-06-2006 at 1:01pm
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I have excessive carbon buildup on plug #1 and plug #8. all other plugs look terrific.
what does this imply? thanks ------------- http://correctcraftfan.com/diaries/details.asp?ID=1360&yrstart=1971&yrend=1975 - '77 Mustang 17 |
Replies:
Posted By: 79nautique
Date Posted: July-06-2006 at 1:08pm
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they are not firing correctly, check for loose or worn spark plug wires, bad dist cap.
Also check and make sure the firing order is correct. Fords are numbered 1-4 on the drivers side 5-8 on the passenger side. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: 77stang
Date Posted: July-06-2006 at 1:43pm
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thanks 79, i was counting on your input.
cap is old, it was recently off and put back on. plugs have less than ten hours on them. autolite platinum, i am little suspect of the of the quality of the plugs themselves. regarding the wires, yes, after thinking about it a while before my posting, i was wondering the same thing. i think i'll, 1. clean a carboned plug and put it in a known good cable location 2. put a suspect cable on a known good cap location 3. put a good cable in a suspect cap location hopefully this will narrow it down ------------- http://correctcraftfan.com/diaries/details.asp?ID=1360&yrstart=1971&yrend=1975 - '77 Mustang 17 |
Posted By: 79nautique
Date Posted: July-06-2006 at 1:48pm
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forget all of that just break down and buy a new set of 8mm wires and a new cap.
If you don't have a high output coil then the platnum plugs are realy a waiste of money and are not going to help anything. I just use the standard 24's and replace them every year. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: 77stang
Date Posted: July-06-2006 at 1:54pm
but i'm poor and my babies cry when their hungry. 
ahh, forget the kids - the boat needs to be fixed  ------------- http://correctcraftfan.com/diaries/details.asp?ID=1360&yrstart=1971&yrend=1975 - '77 Mustang 17 |
Posted By: David F
Date Posted: July-06-2006 at 2:04pm
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...and its worth the extra cash to buy PCM wires so you get the PCM logo printed on each wire ------------- |
Posted By: Tim D
Date Posted: July-06-2006 at 2:15pm
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Yeah, forget the kids, you need those $80 Accel wires. Number 1 and 5 should run the leanest because of the tilt. ------------- Tim D |
Posted By: 79nautique
Date Posted: July-06-2006 at 2:41pm
WRONG!!!!! bunch of bullsh*t If the carb is adjusted correctly and you don't have a valve issue or weak compression on the cylinder they will all be the same. The tilt of the motor will not have any effect. Think what you want it's bullsh*t that the tilt of the enginie will effect the amount of gas vabor going to a cylinder. Having weak compression in a cylinder or a flat cam lobe, or carboned up valve will restrict the amount of vaccum to the cylinder. The tilt will not have any effect. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Tim D wrote:Posted By: Tim D
Date Posted: July-06-2006 at 3:19pm
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Why don't you drive 400 miles and take the exhaust manifolds off your boat and see which ports are the cleanest. ------------- Tim D |
Posted By: 79nautique
Date Posted: July-06-2006 at 3:22pm
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don't have to I can look at my plugs and they are all a nice chocolate color on all of them. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: 79nautique
Date Posted: July-06-2006 at 3:25pm
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So how does the tilt of the motor lean out the front and rear of the motor then? ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: Tim D
Date Posted: July-06-2006 at 3:45pm
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Oh crap, I meant 1 and 5. ------------- Tim D |
Posted By: 79nautique
Date Posted: July-06-2006 at 3:52pm
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still waiting for you to explain how one cylinder gets leaned out over another regard less of it's location. I guess the front cylinders create less vaccum because they are tilted, or should I say they're higher than the others, they are all tilted at the same angle. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: Tim D
Date Posted: July-06-2006 at 4:01pm
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I don't know why, I've been told this by two mechanics. I'm going to pick up my motor Friday which has the 6 quart oil pan. I'll ask my cuz to explain it to me. ------------- Tim D |
Posted By: 79nautique
Date Posted: July-06-2006 at 4:05pm
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it's only 6 qt's if it's an aftermarket oil pan or it has been modified, because the stock pans are 5 qt. Well then again it's really old so they made them that way back then....NOT!!!! ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: Tim D
Date Posted: July-06-2006 at 4:09pm
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You really have a problem admitting you're wrong or made a mistake. My friends '66 American Skier has the same oil pan. ------------- Tim D |
Posted By: 79nautique
Date Posted: July-06-2006 at 4:21pm
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No I don't I guess they made special pans for you that no other manufacturer used that where 6 qt pans.
I guess I'll have to look and find a Ford that as a 351w or 302 engine and a 6 qt Pan. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: 77stang
Date Posted: July-06-2006 at 6:13pm
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Tim,
i caught your 1,8 error, didnt think it was worth mentioning. regarding the oil pan, the manual is clear (see reference section) 302, 351 - 5 qts. 460's - 6 qts. not trying to call you out on this but i simply dont know where your getting your info - its certainly not from the pcm manual at least for my vintage of pcm 302. Now, 79, you mentioned 8mm cables. my 302 currently has 7mm cables. DIM has the pretty 8mm ford blue ones for $45 and the PCM 7mm ones for around $30. Are the 8's worth the premium? ------------- http://correctcraftfan.com/diaries/details.asp?ID=1360&yrstart=1971&yrend=1975 - '77 Mustang 17 |
Posted By: Tim D
Date Posted: July-06-2006 at 6:25pm
OK, in 1966 PCM didn't exist. The engine options CC offered then were Chrysler, Mercruiser, Interceptor, Revley, Gray Marine, O.M.C. and Universal. Here's a pic from the 1966 Brochure showing my motor, an Interceptor. Compare that oil pan to the Mercruiser oil pan.
 ------------- Tim D |
Posted By: Tim D
Date Posted: July-06-2006 at 6:43pm
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Look at the 1967 Chrysler engine manual. Go to page 4, they hold 7 and 8 quarts. But according to 79, I don't know what I'm talking about. I've owned my boat for 16 years, I know what I'm talking about. ------------- Tim D |
Posted By: stang72
Date Posted: July-06-2006 at 8:14pm
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If you have a 312 , 292, etc (y block)... interceptor from 62 it holds...get this...the Dearborn shop manual says 6-8 quarts! Thats a quite range! It took closer to eight!
That pan is BIG! ------------- stang Face plants are not that funny when it's you face! http://www.correctcraftfan.com/diaries/images/3720/photo1.jpg" rel="nofollow - The Super Air |