Doesn't start right after it sits.
Thread Starter
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Freshman User
Joined: Jan 2001
Posts: 28
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Doesn't start right after it sits.
Hey guys,
If I turn my truck off and let it sit for more than 5-7 minutes I have to pump the pedal to get it started. Any time before that time period the bugger starts right up. I am at a loss for this one seems it should be starting better when its warm. Is my gas going somewhere? If so how do I solve the problem?
All your help as always is appreciated!
Jason
1977 F250 w/ 400M
If I turn my truck off and let it sit for more than 5-7 minutes I have to pump the pedal to get it started. Any time before that time period the bugger starts right up. I am at a loss for this one seems it should be starting better when its warm. Is my gas going somewhere? If so how do I solve the problem?
All your help as always is appreciated!
Jason
1977 F250 w/ 400M
Senior User
Joined: Aug 1999
Posts: 166
Likes: 0
Doesn't start right after it sits.
I have had the same problem with mine since I got it. The swap from cast iron intake to aluminum intake and one barrel to four barrell seemed to help. Things got even better when I made a phenolic spacer to raise the carb up off of the intake. I was thinking vapor lock was the problem.. It seemed to be much worse in the hotter part of the year. Anybody else got some input on this?
1977 F-100
300 I-6 / C-4 (soon to be AOD)
Offy C intake w/Edelbrock 500CFM
Hooker Ceramic coated headers w/duals, turbos, tips, and 02's
MSD6A w/Blaster Coil
Headlight relay system (Delanty style)
Overhead Mount FM-CD etc.
R-134 A/C system (I'm cool)
1977 F-100
300 I-6 / C-4 (soon to be AOD)
Offy C intake w/Edelbrock 500CFM
Hooker Ceramic coated headers w/duals, turbos, tips, and 02's
MSD6A w/Blaster Coil
Headlight relay system (Delanty style)
Overhead Mount FM-CD etc.
R-134 A/C system (I'm cool)
Thread Starter
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Freshman User
Joined: Jan 2001
Posts: 28
Likes: 0
Doesn't start right after it sits.
Extreme latent heat? That sounds bad but this gasket you think will do me some help huh? Cool. Thought about adding a spacer to get the carb. up off the manifold a little more any thoughts on that? I have a alum. manifold already.
Thanks
Jason
Thanks
Jason
Senior User
Joined: Dec 2000
Posts: 435
Likes: 0
From: Nebraska Farm
Doesn't start right after it sits.
The fuel is boiling out of the float bowls. What carb do you have? When I switched from Holley to Edelbrock it was a lot better, its still touchy when it gets above 85 outside
Dave,
79 F-150 4x4, 390 w/C6, Edelbrock carb, 33X12.50 never will be finished.
Dave,
79 F-150 4x4, 390 w/C6, Edelbrock carb, 33X12.50 never will be finished.
Thread Starter
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Freshman User
Joined: Jan 2001
Posts: 28
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Doesn't start right after it sits.
Running Edelbrock 600 I would think there has got to be a way to fix this.
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Senior User
Joined: Dec 2000
Posts: 435
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From: Nebraska Farm
Doesn't start right after it sits.
[font size="1" color="#FF0000"]LAST EDITED ON 11-Jun-01 AT 02:44 PM (EST)[/font][p]A plastic or phenolic spacer under the carb helps also. About 1" thick. You can buy them out of Summit or Jegs. The air filter base makes a difference also. If you have the stock base or a drop (lo-profile) base, you created a little dome over the carb thats holding heat in. The aluminum manifold dissipates heat faster than iron, so it isn't helping the cause. I have the same problem through the summer months and just kind of deal with it. Mine will start better and stay running with the Edelbrock though so that was the biggest help.
Also, if you have headers, they're heating things up too. This summer I'm building a cowl induction hood to open up some airflow across the engine and cool things down.
Dave,
79 F-150 4x4, 390 w/C6, Edelbrock carb, 33X12.50 never will be finished.
Also, if you have headers, they're heating things up too. This summer I'm building a cowl induction hood to open up some airflow across the engine and cool things down.
Dave,
79 F-150 4x4, 390 w/C6, Edelbrock carb, 33X12.50 never will be finished.
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Postmaster
Joined: Apr 2000
Posts: 2,838
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From: SD
Doesn't start right after it sits.
[font color=red size=2]I had the same problem with my '73 390 with a cast intake and Edelbrock. I tried an aluminum spacer and it didn't help. Then I tried a plastic 1" spacer and it cured the problem. Be sure to get one made of plastic, or some other insulating material, not metal.
Marty
"Cleverly Disguised as a Responsible Adult"[/font]
Marty
"Cleverly Disguised as a Responsible Adult"[/font]
