Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

6 Cyl Timing Help

Old 05-21-2009, 04:08 PM
  #1  
65289project
Thread Starter
 
65289project's Avatar
 
Join Date: May 2009
Location: PA
Posts: 11
Default 6 Cyl Timing Help

I have a 68 with a 6 cyl, 200 ci. I have been trying to get it running right and it seems like I have it narrowed down to the timing. I have compression tested all cylinders, and they all have 150 psi except one with 120. This doesn't seem too bad, but I dont know.

When I try to put the timing to 6 degrees before as per manual instructions, the car won't even start. But when I change the timing by turning the distributer as far as it can (advancing) the car will run and sound decent when in park or neutral, but when I put in gear it just stalls. So it has no power.

So from what I can see, something must be wrong with the timing... but I would like some advice on where to start looking... ANY IDEAS?
65289project is offline  
Old 05-21-2009, 04:11 PM
  #2  
kalli
6th Gear Member
 
kalli's Avatar
 
Join Date: Oct 2006
Location: Cork, Ireland
Posts: 6,417
Default

a) you sure your timing marks/light are correct ?
b) check for vacuum leaks
c) where is your vacuum advance hooked up?
kalli is offline  
Old 05-21-2009, 07:24 PM
  #3  
1slow67
ROTM Moderator
 
1slow67's Avatar
 
Join Date: May 2007
Location: Huntsville, AL
Posts: 8,146
Default

I run my 200 between 12-16 degrees.
1slow67 is offline  
Old 05-21-2009, 07:40 PM
  #4  
st66ng
1st Gear Member
 
st66ng's Avatar
 
Join Date: Oct 2008
Location: Canada
Posts: 81
Default

I think 6 degrees should be the setting for a manual transmission, if its an automatic it should be 12 degrees.

Also like said above the timing marks can slip on the pulley. The pulley has an inner and outer section that is connected with a rubber dampening ring that can break down and cause the outer ring to move so the timing mark does not line up.

Also if it does stall only in gear and it is an automatic the idle speed might just have to be adjusted. If its a manual it can be set around 550, if its an automatic it needs to be set higher around 750. I know I had that problem with my I6 200, once warmed it would stall in gear, idled fine in park or neutral, I just upped the idle a bit and everything is good now.

Good Luck
st66ng is offline  
Old 05-21-2009, 07:58 PM
  #5  
1slow67
ROTM Moderator
 
1slow67's Avatar
 
Join Date: May 2007
Location: Huntsville, AL
Posts: 8,146
Default

I have a manual and it hates anything under 10 or so.
1slow67 is offline  
Old 05-21-2009, 08:38 PM
  #6  
st66ng
1st Gear Member
 
st66ng's Avatar
 
Join Date: Oct 2008
Location: Canada
Posts: 81
Default

I could be wrong about the manual vs. automatic settings but I kinda remember reading that somewhere.

Anyway mine also works good set higher, mine is at 12.
st66ng is offline  
Old 05-22-2009, 05:30 PM
  #7  
65289project
Thread Starter
 
65289project's Avatar
 
Join Date: May 2009
Location: PA
Posts: 11
Default

thanks for the advice... I dont think the mark has slipped, but I'll check that gasket now. I already checked all of the vacuum lines against a vacuum diagram. Like said in my first post though, to run at all it has to be turned as far as possible, 12 degrees would not do much... Anymore Ideas?
65289project is offline  
Old 05-26-2009, 08:30 AM
  #8  
65289project
Thread Starter
 
65289project's Avatar
 
Join Date: May 2009
Location: PA
Posts: 11
Default

any ideas??? still not running right... could it be something else... remember the compression is okay.
65289project is offline  
Old 06-02-2009, 12:04 PM
  #9  
65289project
Thread Starter
 
65289project's Avatar
 
Join Date: May 2009
Location: PA
Posts: 11
Default

A shop down the road suggested that it could be the timing chain, any thought to that?
65289project is offline  
Old 06-02-2009, 08:42 PM
  #10  
65289project
Thread Starter
 
65289project's Avatar
 
Join Date: May 2009
Location: PA
Posts: 11
Default

Well, I started taking the cover off... I just cant seem to get the harmonic balancer off.... or whatever that is... I'll let you know if it was the chain and sprockets tomorrow
65289project is offline  

Thread Tools
Search this Thread
Quick Reply: 6 Cyl Timing Help



All times are GMT -5. The time now is 08:52 PM.