Vapor Lock?
Thread Starter
Advanced
Joined: Aug 2014
Posts: 71
Likes: 0
From: Albuquerque New Mexico
Vapor Lock?
I realize that a fuel injected engine technically will not vapor lock. However, my '89 will show symptoms of vapor lock on a hot day. She'll start missing and surging, and will even stall when coming to a stop after letting off the gas. I have noticed that when this happens, I can crack the gas cap open and there is a lot of pressure, and the escaping fumes are hot. Is there any ideas guys have? It's bumming me out. Even though she'll fire right back up, I just don't trust here completely for daily use. As usual, thanks in advance for any help you can throw my way!
Pat
Pat
Race Director
Joined: Mar 2015
Posts: 15,926
Likes: 579
The pressure is normal. Need to do some checking could be many things from the coil , icm, lack of thermal grease evan the computer to the digital temp sensor.
I don't believe they can vapor lock.
I don't believe they can vapor lock.
Last edited by antfarmer2; Aug 23, 2015 at 11:01 AM.
Pro
Joined: Oct 2010
Posts: 603
Likes: 45
From: Baltimore County MD
Vapor lock
I realize that a fuel injected engine technically will not vapor lock. However, my '89 will show symptoms of vapor lock on a hot day. She'll start missing and surging, and will even stall when coming to a stop after letting off the gas. I have noticed that when this happens, I can crack the gas cap open and there is a lot of pressure, and the escaping fumes are hot. Is there any ideas guys have? It's bumming me out. Even though she'll fire right back up, I just don't trust here completely for daily use. As usual, thanks in advance for any help you can throw my way!
Pat
Pat
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
The recirculating fuel system cannot vapor lock.
See this article about fuel tank pressure:
https://www.corvetteforum.com/forums...nk-normal.html
See this article about fuel tank pressure:
https://www.corvetteforum.com/forums...nk-normal.html
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
The recirculating fuel system cannot vapor lock. It's more like that you have an ignition issue. Wrong kind of grease or no thermal grease under the ignition module can cause your symptoms.
See this article about fuel tank pressure:
https://www.corvetteforum.com/forums...nk-normal.html
See this article about fuel tank pressure:
https://www.corvetteforum.com/forums...nk-normal.html
