The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 08-17-2003, 05:59 PM   #1
orange72350
Registered User
 
orange72350's Avatar
 
Join Date: Jan 2003
Location: Cold, Snowy High Level, Alberta Canada Eh
Posts: 394
Ignition Problems

When i turn the ignition switch off in my truck, the engine doesnt want to stop firing. the engine dies for a second, then immedialtey comes back to live. it chugs and coughs for about 10-15 seconds, then finally dies. it almost sounds like the engine is being turned with the starter. any ideas? i am stumped. thanx
dale
__________________
2003 yamaha raptor. Stock, but it still hauls!!!!

2000 skiddo mxz 700. Camoplast 1.5 inch track, jaws twin pipes, b+b can, custom built and weighted clutch, wiseco piston, high comp heads. its very fast. wow.

72 c-10 longbox. Bright Orange. Brand new 350, rv cam, performer intake, qjet, headers, 2 1/2 inch exhaust into hooker areo chamber mufflers. Body work coming soon.

"dont let yer mind wander, its to little to go places by itself."

"Forget the herse, cause i'll never die"-ACDC Back In Black

"If It's To Loud, Yer Just Too Old"

"I Love Anything Fast Enough To Do Something Stupid In"

"Instant idiot, just add beer!!""
orange72350 is offline   Reply With Quote
Old 08-17-2003, 06:02 PM   #2
highboy_04
Registered User
 
highboy_04's Avatar
 
Join Date: Mar 2003
Location: kansas
Posts: 1,071
i think that is called dieseling (spl???) it happens to me in the winter time in my truck.
__________________
'67 c10 350/th350
highboy_04 is offline   Reply With Quote
Old 08-17-2003, 07:02 PM   #3
Johns70
Registered User
 
Johns70's Avatar
 
Join Date: Dec 2001
Location: Spring Creek, nevada. U.S.A.
Posts: 456
try retarding the timing a little.maybe better gas to if its a higher compression engine.
__________________
69 chevy short wide box project
70 GMC jimmy project
Johns70 is offline   Reply With Quote
Old 08-17-2003, 09:02 PM   #4
old Rusty C10
Robert Olson Transport
 
old Rusty C10's Avatar
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,310
if its dieseling its timing too far advanced retard it a little if its the truck running on it may be the ignition swiitch on the column base
__________________
Bob



1951 International running on a squarebody chassis


"If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board"
http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!)


PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport

Live each day to the fullest.. you never know when fate is going to pull the rug out from under you...
I hate cancer!!
old Rusty C10 is offline   Reply With Quote
Old 08-17-2003, 09:07 PM   #5
Gordo
Registered User
 
Join Date: Jan 2001
Location: Killingworth, CT. USA
Posts: 3,378
Smile

A high idle speed, for what ever reason (idle adjustment, faulty choke assembly/adjustment, linkage problems) will also induce that condition.
__________________
1971 C10 swb stepside 350/700R4/3.73posi (retired as of 4/22/03)
1998 S10 short bed
2002 S10 Blazer
1942 Oldsmobile
1958 Massey Harris Pony
1951 Wife
Killingworth, Connecticut

May those who love us, love us, any of those who do not love us, may God turn their hearts.
And if God is unable to turn their hearts, may he turn their ankles so we may know them by their limping.

A man who works with his hands is a laborer; a man who works with his hands and his brain is a craftsman; but a man who works with his hands and his brain and his heart is an artist.
Gordo is offline   Reply With Quote
Old 08-17-2003, 09:40 PM   #6
orange72350
Registered User
 
orange72350's Avatar
 
Join Date: Jan 2003
Location: Cold, Snowy High Level, Alberta Canada Eh
Posts: 394
thanx guys. im a gonna fix her right now.ill try the idle thing, then the timing. perfect. thanx alot guys. i felt like an idiot at cruise night on friday. thanx
dale
__________________
2003 yamaha raptor. Stock, but it still hauls!!!!

2000 skiddo mxz 700. Camoplast 1.5 inch track, jaws twin pipes, b+b can, custom built and weighted clutch, wiseco piston, high comp heads. its very fast. wow.

72 c-10 longbox. Bright Orange. Brand new 350, rv cam, performer intake, qjet, headers, 2 1/2 inch exhaust into hooker areo chamber mufflers. Body work coming soon.

"dont let yer mind wander, its to little to go places by itself."

"Forget the herse, cause i'll never die"-ACDC Back In Black

"If It's To Loud, Yer Just Too Old"

"I Love Anything Fast Enough To Do Something Stupid In"

"Instant idiot, just add beer!!""
orange72350 is offline   Reply With Quote
Old 08-17-2003, 11:21 PM   #7
ChevLoRay
Old Skool Club
 
ChevLoRay's Avatar
 
Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
One more trick: this phenomenon became common in the mid-70's when lead was taken away from gasoline and engines were made to run hotter, supposedly to reduce emissions, etc.

So, whenever an engine would diesel on shut-down, I had to do one of two things....(1) if it was an automatic, I'd put it back into Drive, then turn the key off....or (2) if it was a standard, I'd just let the clutch out as I turned off the ignition.

My son's '69 had an engine that was a little more high-performance than mine. He had to run Premium in it, or it would diesel.

Just my suggestion. The others have given you some things to check. But, for those times when you don't have tools or whatever, try my suggestions.
__________________
Member Nr. 2770

'96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed.

'69 C-10 SWB; 350/TH400 - in limbo

The older I get, the better I was.
ChevLoRay is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -4. The time now is 06:58 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com