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Author
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Topic: under the hood it sounds like a paint can
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dubstar
Gearhead Posts: 401
From: Long Beach, Ca 1966 A-Code Coupe
Registered: Feb 2002
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posted 11-18-2002 08:21 PM
   
my 66 daily driver (v8, 289, 4bbl) sounds like a paint can when the pedal is about half way, and gets even worse all the way down... is this the valves?? how can i fix them myself? help me please! thanksps: i havent been here in a long time, thanks to that one thing that causes every problem in the world.. i think they call it women. yeahh, thats it.. women.. thanks.
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V8 Thumper
Gearhead Posts: 2991
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 11-18-2002 08:34 PM
Hey Dub  Women are EVIL  You need to get yourself a GRRL  Paint can? Kinda like marbles? Your engine is pinging under load. You need to check your timing and verify no more than 36* overall ignition time. Done a dwell check lately? Check your points gap and adjust as necessary. What octane fuel do you run? ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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Dave Gibson
Moderator Posts: 6819
From: Pensacola, Florida, USA M&M#166 MCA#47921
Registered: Aug 99
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posted 11-18-2002 09:58 PM
quote:
Originally posted by V8 Thumper:
What octane fuel do you run?
Yup. That was going to be my first question followed by the time, pionts, and dwell. All good places to start. You should be running 93 octane in your Mustang. If you aren't, I suggest that you do. Your Mustang will run much better.  Dave & Terri ------------------
Poison Ivy (Dave's)
'65 Fastback Modified 289 4V, C-4, dual exhaust, styled steel wheels, rally pac, A/C
'02 Explorer XLT, Black, 3.73:1 limited slip, class III tow package!
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johnmustang
Gearhead Posts: 3349
From: Vancouver Island , British Columbia , Canada
Registered: Nov 2001
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posted 11-19-2002 12:14 AM
Had the same problem in my 65 - 289 , went to 94 octane , problem solved with no other changes
JOHN
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65 2+2 FASTBACK
68 COUPE (SOLD)
87 TAURUS WAGON
98 F150 XLT TRITON V8 4.6, 4 WHEEL DRIVE
Member:Vancouver Island Mustang Association
M&M #1710
MyPhotoPage
MY TRUCK
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soaring
Gearhead Posts: 116
From: New Mexico
Registered: Nov 2002
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posted 11-19-2002 01:57 AM
After you do a complete tune- up , and you should right now before any major damage is done, use the highest octane gas you can buy. Also, get some additional lead in your gas tank. Most auto parts stores have lead you can add. Wal-Mart used to carry a brand called "Instead-o-lead" which is the same type of additive I use. I get no more ping at load when I use the stuff with high octane gas.
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Moneymaker
Administrator Posts: 18704
From: Lyons, IL, USA
Registered: May 99
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posted 11-19-2002 08:17 AM
Also install some octane booster in your body as that will help dull the noise. Vodka works well. ------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
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SteveLaRiviere
Administrator Posts: 31026
From: Saco, Maine
Registered: May 99
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posted 11-19-2002 08:41 AM
Turn the radio up. This is under load, right? Not when it's idling, is it? ------------------
'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 Be sure to remember our sponsors, Mustangs Plus, NPD, and Osborn Reproductions.
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Lennie_21
Journeyman Posts: 92
From: Denton, TX
Registered: Mar 2001
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posted 11-19-2002 06:53 PM
Also install some octane booster in your body as that will help dull the noise. Vodka works well.
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Alex Denysenko
Co-Administrator and Moderator
Vodka works well but if your system doesn't like that.....try Kaluha with a shot of coffee.....
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dubstar
Gearhead Posts: 401
From: Long Beach, Ca 1966 A-Code Coupe
Registered: Feb 2002
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posted 11-19-2002 07:07 PM
i run 91 octain, and its only under load that i hear the pinging. Im going to go out and get a Lead Additive right now.. also, what is a dwell?? its been a while... thanks, for all your replies laytro.
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V8 Thumper
Gearhead Posts: 2991
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 11-19-2002 08:50 PM
Dwell angle is the degree of which the points are in contact, thus conducting voltage. It has to do with your points gap in the distributor. Dwell meters aren't real common anymore, but you can check your points gap with a feeler gauge. I have cleaned the contact points with a fine fingernail file if they aren't burned too bad, but I agree with everyone else. Sounds like not enough octane for your timing curve and/or compression ratio. Does it ping while cold, or only while hot? It has been real warm here in SoCal lately  , is your motor running at normal or above normal temps? Excessively hot temps can bring on pre-ignition, which means that during the compression stroke the air/fuel charge is being ignited prematurely by a hot spot in the combustion chamber, begining the combustion event before the spark plug fires. When the plug does fire, you have two flame fronts colliding within the chamber, causing the ping or paint can sound. That's a very violent event within an internal combustion engine, generating very high temperatures and impact-like forces against pistons, valves, rings, and cylinder walls. Not to freak you out, just something you should take care of sooner than later ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html [This message has been edited by V8 Thumper (edited 11-19-2002).]
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71RESTO
Gearhead Posts: 1253
From: Oregon, USA
Registered: Oct 2000
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posted 11-19-2002 08:50 PM
Hey Dub, long time no post!!!! Good to have you back.
Skip the lead additive and just go for the octane booster, that's all you need.------------------
Duane
71 Fastback (his) under resto (351C-4V C6 auto)
73 Mach 1 (hers) (351CJ 4 speed)
66 289/2V coupe (daughter Ashley's)
89 LX 2.3 convertible (daughter Amanda's)
M & M Member #730
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dubstar
Gearhead Posts: 401
From: Long Beach, Ca 1966 A-Code Coupe
Registered: Feb 2002
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posted 11-20-2002 12:47 PM
i turned down the timing, i havent driven it yet, im about to goto work and tell them im sick and cant work. I'll repost with the results.thanks all of you, and great to see you all again. ------------------
Tuesday's Gone With The Wind.
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rockafellz
Gearhead Posts: 914
From: San Lorenzo, CA, USA
Registered: Aug 2001
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posted 11-20-2002 12:54 PM
quote:
Originally posted by dubstar:
im about to goto work and tell them im sick and cant work.
YES!! YEEEEEEEEEESSS!! For some odd reason, that makes me happy!! ------------------
1966 Ford Mustang 2+2
Mine - Restomod in Progress 1966 Ford Mustang Coupe
Dad's - Original Unrestored
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dubstar
Gearhead Posts: 401
From: Long Beach, Ca 1966 A-Code Coupe
Registered: Feb 2002
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posted 11-20-2002 02:07 PM
wow wow wow! all i did was turn it down and it runs so much better now. More power, doesnt sound crappy (except for the squeeky repop fender that doesnt have a valance to attach to yet)thanks again! ps: work is taken care of, and im going to give my sweet mustang a bath and some heavy duty oxidation remover (she needs it). ------------------
Tuesday's Gone With The Wind.
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