For those of you who have been following our Project Box Hauler series, you’ll remember our high-miler, ’01 Ford F-350 dually with 200,000-plus miles on it, was diagnosed with a couple of dead cylinders, more specifically No. 3 and No. 8. Upon his initial diagnosis, Nate Brekken at Strictly Diesel in Scottsdale, Ariz., guessed the problem would more than likely be bad injectors on those cylinders since injectors get fairly tired and worn out on the 7.3s after about 150,000 miles. On the other hand, two dead holes could mean more serious issues, such as bad valves or poor compression from worn-out piston rings, or even a cracked cylinder head.
Posts Tagged ‘7.3’
Glow & Go
Installing New Glow Plugs Will Fix Cold Start Woes
Since diesels are compression-ignition engines, meaning there are no spark plugs to start the combustion process, nearly every diesel is equipped with some sort of glow plug system to get the fire started in cold weather. The little “Wait to Start” light that comes on usually indicates that the factory glow plug system is activated as part of the cold start circuit. Today’s computer-controlled engines have taken the glow plug system engagement to an all-new level, taking into account the various engine parameters as to when the glow plugs will be activated or not.
Hushpower Turbo-Back Exhaust
Another area the stock 7.3L falls short in is the factory exhaust system. The 3-inch system is necked down just past the turbo outlet and continues on a kinky path to a chambered muffler, which robs even more performance. So improving on things is fairly easy with a quality turbo-back system since there’s now catalytic converter on this truck.
Project Box Hauler
Part II: Bellows Style Up-Pipe Upgrade
Last month, we introduced our latest project truck, a well-worn, 200,000-plus–mile Ford F-350 fitted with the 7.3L Power Stroke and a six-speed manual transmission. The owner found this dually while scanning the classifieds where it was listed for sale with a 28-foot gooseneck trailer. The combo used to be a Castrol Racing/John Force car hauler that racked up 215,000 miles in regular cross-country jaunts.
Project Box Puller
Part I: What to Expect When Buying a Used Diesel
If anything positive has come from the latest economic downturn in the United States, it’s that Americans are relearning the value of the dollar. According to recent surveys, Americans are putting away more money now than in the past 20 years, and people are looking more closely at monthly spending than ever before. While the credit crunch has put the hurt on new truck sales, more and more diesel enthusiasts are fixing up and updating the vehicle they current own rather than create huge debt by buying new.