Go Back   Ford Mustang Forums > Mustang > Classic Mustang > Classic Tech

Welcome to our Mustang forums where Mustangers come together to hang out, discuss and enjoy their favorite Mustang hobby with fellow Mustang enthusiasts. We invite everyone to read, post, and enjoy our Mustang forum as well as the many other sections of our site.

You are currently viewing our forums as a guest. By joining our community you gain access to post topics, communicate with members, upload your photos and access many other special features. Registration is fast, simple and free so why wait, join our Mustang community today! If you have any problems with registration or your account login, please contact support.

Classic Mustangs Tech Forum

Technical discussions specific to 1964-1967, 1968-1970, and 1971-1973 Classic Mustang. Discuss all tech related to in-line six cylinder and V8 powered Vintage Mustangs here.

Classic Forums | Classic Talk | Classic Tech | Classic Pictures | Introductions | Mustang Tech | Mustang Lounge 


Reply   Post New Thread
Unread 04-27-2009   #1 (permalink)
65TERP is offline Rookie


Joined: Sep 2008
Posts: 14 Threads: 5
 65TERP's Country Flag
Olney   Maryland
65TERP is on a distinguished road
Default 302 stalling out at stop lights when warm

I took a ride this weekend for a few hours. Everything was running great but on my way home every time I came to a stop my car would start to choke and then stall out, it was also running a bit rough whenever I was off the gas. At cruising speed all is fine. This hasn't happened before and looking for some ideas. I have a 331 with an Edelbrock carb.
65TERP is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Sponsored Links
Advertisement
 
Unread 04-27-2009   #2 (permalink)
Jonk67 is offline GT Member

Classic Member
S197 Member


Joined: Dec 2007
Posts: 1,990 Threads: 19
 Jonk67's Country Flag  View Jonk67's 1 photo
Smyrna   Tennessee
Jonk67 is on a distinguished road
Default

Are the floats adj. on an Edelbrock? If it were a holley I'd say the floats were too high and gas was sloshing over into the throat.

Have you checked your timing? Is the vac. diaphragm in the dist. still good?
Have you tried adjusting the idle up ~100 rpms at a time?
Is the choke fully open once the car is warmed up?
How hot is the carb? might need a phenolic spacer to avoid fuel percolation.
Just some thoughts,
Jon
__________________
'67 Coupe 289 stroked to 333, AOD, 9" w/3.50:1, PDB, Candyapple red w/red deluxe int., PS, ext. decor group, light group, foxbody seats.
'09 Black Warriors In Pink with glass roof - the wifes Mustang.
"If it ain't broke, I haven't fixed it yet" -Jon
Jonk67 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 04-28-2009   #3 (permalink)
65TERP is offline Rookie


Joined: Sep 2008
Posts: 14 Threads: 5
 65TERP's Country Flag
Olney   Maryland
65TERP is on a distinguished road
Default

Thanks for the response, I should point out I know very little about these, or any other motors. The entire motor was rebuilt with a number of performance parts about 2000 miles ago and I know they used a phenolic spacer on the rebuild. I called a shop and they told me to check for vacuum leaks. Can anyone tell me how to do this? I would hate to waste money at a shop if this is a simple fix.
65TERP is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 04-28-2009   #4 (permalink)
Jonk67 is offline GT Member

Classic Member
S197 Member


Joined: Dec 2007
Posts: 1,990 Threads: 19
 Jonk67's Country Flag  View Jonk67's 1 photo
Smyrna   Tennessee
Jonk67 is on a distinguished road
Default

First, with the car warmed up, remove the air cleaner and look down the carb. if the choke flap is mostly closed your choke isn't adjusted properly. There are probably directions on Edelbrocks website.

To check for vacuum leaks I would inspect all of your rubber lines for age, cracks when you bend them, etc. I replaced ALL of my rubber lines when I bought the car, most are 40+ yr. old rubber. If you have an auto trans. there is one at the rear of the intake and one at the end of the trans. also that rarely gets changed.
You may be able to hear a vacuum leak if the engines not too loud. If you spray ether around the intake and the RPM's pick up you've got a leak.

You can test the vac. advance to the dist. by removing the dist. cap, disconnecting the rubber hose from the carb. (not running), look inside the dist. at the arm that comes out of the vac. adv. and suck on the hose. The arm should get pulled into the vac. adv. a few mm (you'll see it move). If it doesn't your vac. adv. is bad (diaphragm on the inside dries out). You can get a replacement at the parts store <$20 or from a mustang parts vendor. Not too hard to change with a small needle nose and a pencil magnet so you don't loose the C clip.
Jon
__________________
'67 Coupe 289 stroked to 333, AOD, 9" w/3.50:1, PDB, Candyapple red w/red deluxe int., PS, ext. decor group, light group, foxbody seats.
'09 Black Warriors In Pink with glass roof - the wifes Mustang.
"If it ain't broke, I haven't fixed it yet" -Jon
Jonk67 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Sponsored Links
Advertisement
 
Reply   Post New Thread



Thread Tools



Mustang Photos
Mustang Links    Top Sites    RSS    Link To Us    Add to Favorites    Archive    Terms of Use    Site Rules    Privacy    Contact    Sponsors    Advertise   
AllFordMustangs is not affiliated with or endorsed by Ford Motor Company. ©Copyright 2002-2011 All Auto Enthusiasts Network

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164