pinging problem - 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> Hotrodding Basics
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 03-16-2014, 09:36 AM
Registered User
 
Join Date: Mar 2014
Posts: 5
Wiki Edits: 0

Thanks: 8
Thanked 0 Times in 0 Posts
pinging problem

i have a 383 build in a z me and my brother have been working on the past few months when about a week ago a pinging started it occurred on the passenger side. we have tried adjusting the timing but oddly when revved the timing would drop, i bought a distributor and coil witch fixed that but the ping is still there. it struggles to stay at idle and will kind of choke its self when driven. I believe the motor is too fresh for carbon build up, all the spark plugs look to be fine and the wires are all new as well. we have not drove the car much at all once we noticed the ping but it seems to be getting much worse. I am still new to the hot rod world and need help, anything suggested will be much appreciated.

thank you
-Jon

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 03-16-2014, 10:02 AM
68NovaSS's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Working with chromed bolts
Last journal entry: New to me T-Bucket
Last photo:
Join Date: Sep 2002
Location: Nine Mile Falls, Washington
Posts: 5,222
Wiki Edits: 9

Thanks: 102
Thanked 131 Times in 122 Posts
We need much more information. Where's your timing at now, static and total, c.r., gears, cam specs, trans, etc.? Is it running hot? Any backfiring from the carb or exhaust? What color are the plugs? When is it sluggish, off idle, at speed, WOT?
__________________
Boost adds dignity to what would otherwise be a vulgar brawl...

Midnight Sun Street Rod Association
Reply With Quote Quick reply to this message
The Following User Says Thank You to 68NovaSS For This Useful Post:
383z (03-17-2014)
  #3 (permalink)  
Old 03-16-2014, 10:50 AM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,791
Wiki Edits: 326

Thanks: 742
Thanked 956 Times in 806 Posts
Quote:
Originally Posted by 383z View Post
i have a 383 build in a z me and my brother have been working on the past few months when about a week ago a pinging started it occurred on the passenger side. we have tried adjusting the timing but oddly when revved the timing would drop, i bought a distributor and coil witch fixed that but the ping is still there. it struggles to stay at idle and will kind of choke its self when driven. I believe the motor is too fresh for carbon build up, all the spark plugs look to be fine and the wires are all new as well. we have not drove the car much at all once we noticed the ping but it seems to be getting much worse. I am still new to the hot rod world and need help, anything suggested will be much appreciated.

thank you
-Jon
Purchase this light/10X magnifier....
Longacre 50886 Spark Plug Viewer With Holder
Put the light and enough tools in the car to remove and replace the spark plugs. Find a not so well traveled road and run through the gears. Go to neutral in the transmission, chop the ignition and coast to a stop. Remove the spark plugs, keeping them in order of cylinder. Inspect them with your light/magnifier.

Looking at the porcelain insulator up inside the plug, look for tiny little black specks. This would be oil blown out from between the rings and the ring land as the motor detonated. If the detonation gets worse, you will also see tiny little silver beads melted onto the porcelain. This would be the pistons coming apart.

If you see neither black or silver specks on the insulators, the motor is not detonating to the point of hurting itself, but you need to get a hold of the tune before it does hurt itself.
Reply With Quote Quick reply to this message
The Following User Says Thank You to techinspector1 For This Useful Post:
383z (03-17-2014)
  #4 (permalink)  
Old 03-16-2014, 11:36 AM
vinniekq2's Avatar
Registered User
 
Join Date: Jun 2012
Location: BC,Canada
Age: 56
Posts: 7,702
Wiki Edits: 0

Thanks: 309
Thanked 741 Times in 712 Posts
welcome to the site.You need to continue posting,answering the questions,to get more help,,,
Reply With Quote Quick reply to this message
The Following User Says Thank You to vinniekq2 For This Useful Post:
383z (03-17-2014)
  #5 (permalink)  
Old 03-16-2014, 01:08 PM
Registered User
 
Join Date: Jun 2010
Location: TX
Posts: 1,173
Wiki Edits: 0

Thanks: 0
Thanked 103 Times in 95 Posts
A engine that is overheating will ping under load. That condition is preignition and appears as if the timing is over advancing. The engine should run between a minimum of 180 and a maximum of 200 degrees, winter and summer.

If it is detonation, your compression ratio is too high for the octane of the pump gasoline you are using.
Reply With Quote Quick reply to this message
The Following User Says Thank You to MouseFink For This Useful Post:
383z (03-17-2014)
  #6 (permalink)  
Old 03-17-2014, 07:59 AM
Registered User
 
Join Date: Mar 2014
Posts: 5
Wiki Edits: 0

Thanks: 8
Thanked 0 Times in 0 Posts
im sorry it has taken this long to reply i posted this right before i went into work yesterday and have not been on since then.

my brother and i do not know much about the motor besides it has 70cc aluminum heads, flat top pistons, 383 bottom end, holly 750 ultra hp double pumper carb, victor jr. intake, the cam size/piston size and compression ratio is unknown. it has a th350 trans and around 4.10 gears.

its hard to describe the problem besides the pinging noise coming out the passenger side is getting worse and the timing doesn't effect it

i have put 93 octane in it every time but i think the person who we got the motor from used something higher because he used it for the strip only, where im trying to make it a street/ strip car. The person we got it from said it would run on 93 so i trusted his word.

on the highway cruising at about 55 the temp slowly grew hot to about 210-220ish and then staid there. it has seemed to be a little sluggish all around at acceleration. when it starts up after idleing for 3-5 mins it seems like it still wants to die once put in gear but down a street or two that goes away.

thank you all again for any advice given

Last edited by 383z; 03-17-2014 at 08:08 AM.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 03-17-2014, 05:24 PM
Registered User
 
Join Date: Dec 2012
Location: Niagara Falls On. Canada
Posts: 41
Wiki Edits: 0

Thanks: 1
Thanked 11 Times in 11 Posts
Have you given any thought to a partially restricted exhaust system. Just thought i,d go a different direction as every one else is going to timing, and fuel.
Reply With Quote Quick reply to this message
The Following User Says Thank You to 51 styline For This Useful Post:
383z (03-17-2014)
  #8 (permalink)  
Old 03-17-2014, 05:52 PM
Registered User
 
Last photo:
Join Date: Apr 2007
Location: Seattle, Wa
Posts: 6,750
Wiki Edits: 0

Thanks: 4
Thanked 416 Times in 359 Posts
Quote:
Originally Posted by 383z View Post
im sorry it has taken this long to reply i posted this right before i went into work yesterday and have not been on since then.

my brother and i do not know much about the motor besides it has 70cc aluminum heads, flat top pistons, 383 bottom end, holly 750 ultra hp double pumper carb, victor jr. intake, the cam size/piston size and compression ratio is unknown. it has a th350 trans and around 4.10 gears.

its hard to describe the problem besides the pinging noise coming out the passenger side is getting worse and the timing doesn't effect it

i have put 93 octane in it every time but i think the person who we got the motor from used something higher because he used it for the strip only, where im trying to make it a street/ strip car. The person we got it from said it would run on 93 so i trusted his word.

on the highway cruising at about 55 the temp slowly grew hot to about 210-220ish and then staid there. it has seemed to be a little sluggish all around at acceleration. when it starts up after idleing for 3-5 mins it seems like it still wants to die once put in gear but down a street or two that goes away.

thank you all again for any advice given
If it's pinging on one side, that sounds like, assuming it is detonation or preignition and not some other sound source, that it is a local problem with a cylinder not an overall tuning problem. This engine has a lot of good parts but they are not related to each other in a GM production sense. My first inclination is to think that one cylinder may be leaking air at an intake manifold to head joint. This is a fairly common problem where small mismatches occur with parts from different sources. Often this happens on the underside allowing it to pull from the valley. Another could be a defective or incorrect heat range spark plug.

Sluggish overall and cruising hot sounds like a lean mixture or the cam and/or ignition is retarded. Keep in mind that the ignition times to the crank independent of the camís position so each needs to be checked.
Reply With Quote Quick reply to this message
The Following User Says Thank You to oldbogie For This Useful Post:
383z (03-17-2014)
  #9 (permalink)  
Old 03-17-2014, 06:18 PM
Registered User
 
Join Date: Mar 2014
Posts: 5
Wiki Edits: 0

Thanks: 8
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by 51 styline View Post
Have you given any thought to a partially restricted exhaust system. Just thought i,d go a different direction as every one else is going to timing, and fuel.
can you explain in a little more detail?
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 03-17-2014, 06:25 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,791
Wiki Edits: 326

Thanks: 742
Thanked 956 Times in 806 Posts
Quote:
Originally Posted by 383z View Post
The person we got it from said it would run on 93 so i trusted his word.
Hahahahaha, TRUST NOBODY.
Reply With Quote Quick reply to this message
The Following 2 Users Say Thank You to techinspector1 For This Useful Post:
383z (03-18-2014), crussell85 (03-18-2014)
  #11 (permalink)  
Old 03-17-2014, 07:26 PM
Registered User
 
Join Date: Dec 2012
Location: Niagara Falls On. Canada
Posts: 41
Wiki Edits: 0

Thanks: 1
Thanked 11 Times in 11 Posts
Some years ago i had a Chevvy with a 283, Chevvy Fuelie pistons and a Crower roller cam,with a 3 x2 intake and it ran real good at the track and on the street. It started to overheat and ping and i found the mufflers had collapsed inside, partially. this caused backpressure in the system and caused the engine to ping and overheat. Not saying this could be your problem but it,s worth looking in to. I hope this will help you and hope you find your problem. I know there a lot of knowledgeable rodders on this site that will do their best to help you.
Reply With Quote Quick reply to this message
The Following User Says Thank You to 51 styline For This Useful Post:
383z (03-18-2014)
  #12 (permalink)  
Old 03-18-2014, 07:30 AM
Registered User
 
Join Date: Mar 2014
Posts: 5
Wiki Edits: 0

Thanks: 8
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by techinspector1 View Post
Hahahahaha, TRUST NOBODY.
yeah i think im going to end up learning this the hard way now
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 03-18-2014, 03:45 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,791
Wiki Edits: 326

Thanks: 742
Thanked 956 Times in 806 Posts
Quote:
Originally Posted by 383z View Post
yeah i think im going to end up learning this the hard way now
Here's why you can't trust anybody.......
The four percent of us who have no conscience - Washington Times
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 03-19-2014, 04:01 AM
Registered User
 
Last photo:
Join Date: Dec 2012
Location: Binghamton, NY
Posts: 257
Wiki Edits: 0

Thanks: 40
Thanked 47 Times in 45 Posts
Quote:
Originally Posted by techinspector1 View Post
I like it.

Now mix in the number of dishonest, ignorant people who think that you and I are also ignorant enough to believe their tall tales of their knowledge and experience and you will discover that we have a 50/50 chance of dealing with someone who is both honest and intelligent.

To the OP, the old saying (from my Grandfather R.I.P.) 'believe half of what you see and none of what you hear'.

Good luck - Jim
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 03-20-2014, 08:04 AM
Custom10's Avatar
my KARMA ran over my DOGMA
 

Last journal entry: SS
Last photo:
Join Date: May 2009
Location: Saskatchewan, Canada
Age: 49
Posts: 1,095
Wiki Edits: 0

Thanks: 14
Thanked 25 Times in 23 Posts
Quote:
we have not drove the car much at all once we noticed the ping but it seems to be getting much worse. I am still new to the hot rod world and need help, anything suggested will be much appreciated.

thank you
-Jon
"Ruff idle, choking itself, wants to die, getting worse" >>> Is this a hydraulic FT cam going south? dread. Did you and your bro install the cam? what type and what are the specs.

Have you pulled the valve covers and looked for broken springs, or other issues? pulled or broken studs etc >>> cam issues >>> you can do a quick check of the valve lift, spin it over and have a look see for rockers that dont wanna dance.

2 more of my cents

TJ
Reply With Quote Quick reply to this message

Recent Hotrodding Basics 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
t p i pinging problem 305 engine chphlds Modern Electronic Engines 6 11-15-2012 10:28 AM
pinging problem chphlds Hotrodding Basics 4 10-29-2012 04:15 AM
pinging Mechanic@tdpud Engine 2 03-19-2007 06:47 AM
Could it be pinging? Nightfire Hotrodding Basics 5 10-27-2005 11:59 PM
pinging montea Hotrodding Basics 23 08-23-2005 06:35 AM


All times are GMT -6. The time now is 06:42 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.