plugs - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 07-22-2010, 01:01 PM
Registered User
 
Last photo:
Join Date: Jun 2009
Location: alabama
Posts: 192
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
plugs

what do you all think rich lean about right seams to me like they didnt last long before i was getting miss fires only about 12K miles

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 07-22-2010, 03:09 PM
Registered User
 
Last photo:
Join Date: Apr 2007
Location: Seattle, Wa
Posts: 6,822
Wiki Edits: 0

Thanks: 4
Thanked 449 Times in 384 Posts
Quote:
Originally Posted by rtyauch301
what do you all think rich lean about right seams to me like they didnt last long before i was getting miss fires only about 12K miles
Picture is quite fuzzy, but I see a lot of orange on the outer shell and the insulator. This would make me think this engine is in a very wet environment on the outside, like a boat, or a vehicle close to the water, a swamp buggy for instance. I also see a lot of orange on the insulator, assuming this isn't from some chemical or colorant in the fuel, I suspect there's coolant leaking into the cylinder from somewhere.

Bogie
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 07-22-2010, 03:36 PM
sqzbox's Avatar
My pipes are my music
 
Last photo:
Join Date: Sep 2009
Location: indiana
Age: 64
Posts: 2,938
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Rtyauch301, Are you using octane booster? I've seen that color before on my 455 I tore down after a rod bearing spun. I let the dam thing over rev one time and I broke the top ring on 4 pistons. I used octane booster in it about 2 out of three tank fulls and when I tore it down the reddish orange deposit was on everything, valves, piston tops, chamber, and plugs.
12,000 miles really isn't that bad on an engine you know, that's about 1 years worth of driving. I would just replace the plugs and chock it up to maintenance!.
From your pic and user name I assume you have those plugs in a 301 cu. in?
What induction system do you have?
Ignition?
Mileage on the motor?
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 07-22-2010, 03:50 PM
Registered User
 
Last photo:
Join Date: Jun 2009
Location: alabama
Posts: 192
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
It's a 400 ci pontiac factory intake 2 bbl 117k no booster I don't think that stuff helps
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 07-22-2010, 04:04 PM
Registered User
 
Last photo:
Join Date: Jun 2009
Location: alabama
Posts: 192
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Also I wouldn't say I live on a wet area... I live about 3mi from tn river in northern al
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 07-22-2010, 04:08 PM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
Do you use only one brand and grade of fuel? If it's an "off brand" premium, this can be due to the additives.
Attached Thumbnails
Click image for larger version

Name:	pont plgs.jpg
Views:	45
Size:	7.9 KB
ID:	46917  
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 07-22-2010, 04:20 PM
Registered User
 
Last photo:
Join Date: Jun 2009
Location: alabama
Posts: 192
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I do allways get my fuel from the same station it's a texico allways 93 oct
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 07-22-2010, 04:26 PM
sqzbox's Avatar
My pipes are my music
 
Last photo:
Join Date: Sep 2009
Location: indiana
Age: 64
Posts: 2,938
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Change the plugs, run some WOT passes, pull a couple out and take some more pic's and show us what you find and we'll go from there.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 07-22-2010, 04:28 PM
sqzbox's Avatar
My pipes are my music
 
Last photo:
Join Date: Sep 2009
Location: indiana
Age: 64
Posts: 2,938
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
I forgot,. What kind of oil do you use?
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 07-22-2010, 04:35 PM
Registered User
 
Last photo:
Join Date: Jun 2009
Location: alabama
Posts: 192
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Gtx 20W 50
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 07-22-2010, 05:51 PM
Registered User
 
Last photo:
Join Date: Jun 2009
Location: alabama
Posts: 192
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thought I would add it seems to have solved my mis at idle but after the car warm up at wot I get a miss or maybe predet I'm not sure which..... Car run at around 180 to 190 never gets any hotter I'm thinking I might have a carb issue here it's never been rebuilt that I know of and iv had the car for about 40k miles so I bought a rebuild kit today befor work figured I couldn't go wrong for $18...... Also I will do a few wot runs on the way home and take a photo of the plugs when I get home.... One more thing I don't burn oil and iv never lost any water I do loose about half a quart of oil ever 3k but I beleave all that goes out the rear main seal as it does leak
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 07-22-2010, 06:06 PM
sqzbox's Avatar
My pipes are my music
 
Last photo:
Join Date: Sep 2009
Location: indiana
Age: 64
Posts: 2,938
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
1 qt. every 3K is pretty good for a 100K+ 400! I'd look into solving the plug issue before ripping into more than 1 thing at a time. Let's look at the plugs first.

Your plug's in the pic look to be R45TS AC's or equivalent, right?

Last edited by sqzbox; 07-22-2010 at 06:12 PM.
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 07-22-2010, 09:43 PM
Registered User
 
Last photo:
Join Date: Jun 2009
Location: alabama
Posts: 192
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
theirs about 25 miles on this plug and about 4 wot runs to 90 excuse the paper towel it was hot looked new to me aside from a little white powdering which i tried to get in the photo with my crappy camera.. so were to from here.. also if anyone knows how to shrink this image it looks clearer smaller... also the old plugs were #86 autolite coppers and the new ones are the same


Last edited by rtyauch301; 07-22-2010 at 09:49 PM.
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 07-22-2010, 10:02 PM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 597 Times in 546 Posts
Might be a little clearer...
Attached Thumbnails
Click image for larger version

Name:	PLG.JPG
Views:	67
Size:	3.8 KB
ID:	46926  
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 07-23-2010, 07:05 AM
sqzbox's Avatar
My pipes are my music
 
Last photo:
Join Date: Sep 2009
Location: indiana
Age: 64
Posts: 2,938
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Plug looks consistent with a 117K mile carbed engine.
What kind of ignition system do you have? It might be getting a little weak.
That might explain some of the deposits on the plug already.

Need to change the air filter and PCV valve. When you change the PVC valve, pull the hose from it to the vacuum source and clean it out also.
If your still using the stock air cleaner, you need to change the little filter element inside the cleaner that filters the crank case.

Before you jump on the carb, I would check the ignition first. Inspect the inside of the cap for light or dark carbon tracks between the contacts and build=up of deposits. worn and dirty rotor button. Check the cables and make sure their not touching any exhaust or rubbing anything metal including the oil dipstick tube. Pay attn. to #5 and #7 cables that could cross fire between them. You can check the wires also at night. Any cross firring can be spotted
by a small spark between the cables. Move the cables around with a wood dowel or something like that to keep from ZAPPING your finger!

Check all this and if it's good or replacing worn part's doesn't improve the slight miss, then start on the carb.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Carb issue? (Long) mrevil Engine 17 03-30-2009 06:35 PM
DO THEY MAKE "CYLINDER HEAD BRASS FREEZE PLUGS ? SCHOONER Engine 12 02-05-2009 07:28 PM
Blower Motor - Timing - Spark Plugs: Need Clarification Please 41willys Engine 22 08-31-2008 10:01 AM
Cam Bearings and Core Plugs (SBC 350)89 gandl2123 Engine 15 03-26-2007 03:06 AM
Rant: Bosch Plugs Cost me $300.00 Rolm Engine 7 07-22-2004 09:50 PM


All times are GMT -6. The time now is 06:31 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.