350 Motor ping only when I accelerating - 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 09-29-2010, 06:25 AM
Registered User
 
Join Date: Sep 2010
Location: New Richmond WI
Posts: 2
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
350 Motor ping only when I accelerating

my 1974 Chevy 350 motor pinging only when I'm accelerating?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 09-29-2010, 06:36 AM
bubbahotep's Avatar
Registered User
 
Last photo:
Join Date: Aug 2008
Location: NYC
Age: 42
Posts: 487
Wiki Edits: 0

Thanks: 1
Thanked 1 Time in 1 Post
Timing too advanced, check your vac advance

or, low octane gas when you might need higher octane

tune up? Plugs could be cooked too
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 09-29-2010, 06:47 AM
Registered User
 
Join Date: Sep 2010
Location: New Richmond WI
Posts: 2
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
low octane gas when you might need higher octane
I will Try a Can of Higher Octane 104
The 350 Motor sit in a 1951 Chevy Truck with Auto Trans, 4bl it just started doing the ping when I accelerating, we take the truck to show and it sit in a warn gargae maybe week at a times
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 09-29-2010, 07:13 AM
adantessr's Avatar
'23 T-Bucket Pickup
 
Last wiki edit: Troubleshooting ignition Last photo:
Join Date: Jun 2010
Location: South Charleston , WV
Age: 62
Posts: 1,549
Wiki Edits: 3

Thanks: 43
Thanked 17 Times in 15 Posts
Definitately sounds like too much timing advance . There are several old posts on here about timing .
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 09-29-2010, 09:08 AM
bubbahotep's Avatar
Registered User
 
Last photo:
Join Date: Aug 2008
Location: NYC
Age: 42
Posts: 487
Wiki Edits: 0

Thanks: 1
Thanked 1 Time in 1 Post
104 octane boost cans are fake, no increase in octane. Buy 92,93 octane gas and fill the tank to be sure. Sounds more timing related though
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 09-29-2010, 12:04 PM
66SSImp454's Avatar
Justin
 
Last photo:
Join Date: Sep 2010
Location: Denver CO
Posts: 69
Wiki Edits: 0

Thanks: 2
Thanked 1 Time in 1 Post
Too much advance.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 09-29-2010, 01:56 PM
Registered User
 
Last photo:
Join Date: May 2010
Location: Costa Mesa, Ca.
Posts: 32
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Im having the same issue in my 50 Ford F1. I think mine is related to timing and Im going to recheck it tonight.

I replaced my valve springs and pushrods and now have this issue.

I also got it when I put bad 89 gas in it, before this valvespring replacement. I put the octane boost in and that did clear the issue too.

What about too much fuel pressure- Throwing too much gas into the intake?


just my two cents
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 09-29-2010, 04:02 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,867
Wiki Edits: 326

Thanks: 750
Thanked 974 Times in 822 Posts
At any given time, how old would the gas in the tank be?

The motor may be detonating at all engine speeds, not just when accelerating, but may be less loud so that you cannot hear it over the operation of the engine and drivetrain.

The reason you hear it better under acceleration is that the system is coming up on its efficiency and packing the cylinders better than it can at lower rpm's and a light throttle.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 09-05-2012, 05:41 PM
Registered User
 
Join Date: Sep 2012
Location: STATEN ISLAND NEW YORK
Posts: 13
Wiki Edits: 0

Thanks: 1
Thanked 0 Times in 0 Posts
sbc pinging

I have a pinging problem in my 350/400 hp sbc. I currently have a mallory unilite distributor . I tried setting my timing at 35,34,33 total timing at 3,000 rpm and still have the problem then i tried base timing at 8 and 10 btdc and lower, the engine ran bad. i started adjusting the allan key adjustment in the vacum advance canister counter clock wise to reduce the advance curve and want to know if anyone agrees i am on the right track or if anyone has any suggestions. thanks vinny
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 09-06-2012, 04:23 AM
Member
 
Last photo:
Join Date: Dec 2004
Location: San Antonio, Texas
Age: 50
Posts: 4,021
Wiki Edits: 0

Thanks: 0
Thanked 23 Times in 23 Posts
This post started and ended 2 years ago. I think you would get better advice if you starting a new post.
Reply With Quote Quick reply to this message
The Following User Says Thank You to 454C10 For This Useful Post:
sbnova (09-06-2012)
  #11 (permalink)  
Old 09-06-2012, 12:35 PM
Registered User
 
Last photo:
Join Date: Apr 2007
Location: Seattle, Wa
Posts: 6,764
Wiki Edits: 0

Thanks: 4
Thanked 426 Times in 365 Posts
Quote:
Originally Posted by sbnova View Post
I have a pinging problem in my 350/400 hp sbc. I currently have a mallory unilite distributor . I tried setting my timing at 35,34,33 total timing at 3,000 rpm and still have the problem then i tried base timing at 8 and 10 btdc and lower, the engine ran bad. i started adjusting the allan key adjustment in the vacum advance canister counter clock wise to reduce the advance curve and want to know if anyone agrees i am on the right track or if anyone has any suggestions. thanks vinny
Depends under what conditions it pings. Pinging under acceleration has different causes than at cruise or at WOT. The big players are compression ratio, ignition advance, and mixture ratio. Other players are engine operating temperature, intake air temperature, and gearing which includes the effects of tire diameter.

So having an understanding of the engine's and vehicle's configuration, and under what circumstances it pings is necessary information to figure out the whys and remidies.

Bogie
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
Port or Full time vacuum cool rockin daddy Engine 129 10-05-2010 03:00 PM
Cam/Lifter Question about Ramjet 350 Jake Harsha Engine 20 07-07-2010 06:22 AM
DEBATE: Which heads are better?....Chevy 350, Pontiac 350, Olds 350 or Plymouth 350. Steve-0321 Hotrodding Basics 21 11-26-2007 12:44 AM
305 head on 350 savman1 Engine 4 10-15-2006 09:18 PM
348 or 350 delimma 62ImpalaSS Engine 12 05-17-2006 11:03 PM


All times are GMT -6. The time now is 11:39 AM.


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.