You are here:
- Home
- Autos
- Auto Repair
- American Motors
- possible vapor lock????
American Motors/possible vapor lock????
Advertisement
Question
Kevin
I have a 1978 Jeep Wagoneer.360,4bbl,auto with 150,000 miles . Motor has 20,000 since rebuild. Runs good and plenty of power.Problem is when I tow my tractor with the jeep(abt 6000 lbs),after 70 or 80 miles,it starts sputtering and acts like it wants to cut off, I decrease the accelerator pedal to about 25 or 30 mph and it runs fine. After it coold down,it runs great at all speeds and then does the same think. I have changed the fuel pump,all rubber hoses in the delivery and return lines,and it still happens. Please help as I am attached to this truck like it is my best friend and needs some help.
Thanks for any thing you can tell me
Bob
There are other items that can cause your condition.
Ignition coils often break down when hot & under a load, as well as spark plugs & wires.
You could hook up a fuel pressure gauge and check the pressure when hot while driving.
Is the temperature gauge indicating an overhating condition. What thermostat is in the engine?
Related Articles
Kevin Pilotte
Expertise
I can answer many technical questions relating to AMC vehicles prior to 1979. I also have experience with Rambler & Nash vehicles.
Experience
I am a former AMC technician, service writer and service manager. I have worked in AMC dealers in Illinois in the 70's. After college, I was a Field Service Rep for American Motors Sales Corporation, working out of the Chicago Zone office. I traveled to AMC dealers assisting in the diagnosis and repair of AMC vehicles. I was also the Area Training Manager for DeLorean Motor Company. I have 10+ years as an Automotive Instructor. I have modified and restored
numerous AMC vehicles. I have been working on AMC vehicles for over 30 years.
Organizations
I have been an ASE Certified Master Technician since 1975. This includes L1. I am also currently a Toyota Certified Master Diagnostic Technician.
Publications
I have articles in "American Motoring", the official publication of the American Motors Owners Association. They are the largest AMC club in the world.
Education/Credentials
I have a certificate I printed out from a website.
©2012 About.com, a part of The New York Times Company. All rights reserved.