Question about 2008 Ford F 250 Super Duty 4WD
Could be low coolant, could be a bad head gasket or other point where combustion gasses are entering coolant.
The heater core fills with bubbles, it's commonly the highest point in the cooling system. When the motor is turning slow the water pump isn't moving enough water to force the bubbles to go on through the heater core but when you speed the motor up the pump is able to force the bubbles down to the motor. They'll go to the top radiator tank and then out the pressure cap to the recovery tank. Look for bubbling in the coolant recovery tank.
Posted on Dec 29, 2010
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 27, 2016 | 2000 Chrysler 300M
Nov 08, 2013 | 2001 Ford Escape
Oct 14, 2012 | 2004 Chevrolet Avalanche
Aug 07, 2011 | Ford F-150 Cars & Trucks
Oct 01, 2010 | 2004 Chrysler Pacifica
Jun 25, 2010 | 2001 Pontiac Sunfire
Mar 04, 2009 | 1997 Chevrolet Tahoe
Dec 31, 2008 | 2002 Ford Expedition
199 people viewed this question
Usually answered in minutes!