Ford Boss 6.2 V8 Engine Problems
Ford introduced the Boss 6.2 V8 engine in the 2010 Ford F-150 Harley Davidson and SVT Raptor. Although the 6.2L V8 is no longer an option on F-150 models, it remains the standard engine on the F-250 and F-350 Super Duty. With 385 horsepower and 430 pound-feet of torque, the 6.2-liter Boss engine delivers respectable performance.
That may seem insignificant in comparison to the 6.7 Power Stroke. The 6.2L V8 engine, on the other hand, is approximately $10,000 less expensive and provides an excellent balance of power and reliability. We’ll discuss some of the most common Ford 6.2 engine problems and reliability in this guide.
Common Ford 6.2 Engine Problems
Several of the most frequently encountered issues with the Ford 6.2L V8 F150, F250, and F350 include the following:
- Valve spring failure
- Oil leaks
- Rough idle
- High oil consumption
We will discuss each of the aforementioned points in greater detail throughout the remainder of the article. However, a few brief remarks prior. These are the most frequently encountered issues for a reason. This is not to say that these are truly common issues with the Ford 6.2 gas engine. Rather than that, when failures occur, these are a few of the most frequently encountered areas.
Having said that, the 6.2-liter Boss V8 is a fairly reliable engine. There are instances where these engines have lasted 300-400k miles or more with minimal issues. At the conclusion of the article, we’ll return to the Ford 6.2 engine’s reliability.
1) Boss 6.2 V8 Valve Spring Failures
Within the cylinder head, valve springs are located around the valve stems. They are in charge of applying spring pressure to the intake and exhaust valves in order to control them.
This contributes to the prevention of the valves floating or bouncing. Each valve requires a valve spring, which equates to 16 valve springs on the Ford 6.2L V8. Regrettably, valve spring failure is one of the most frequently encountered problems with the Ford 6.2 gas engine.
Once a valve spring problem occurs, you may notice a variety of other problems. The 6.2 V8 will begin to run rough, emitting misfire codes, and so forth. Additionally, it is critical to address issues promptly. If not repaired, valve spring failures can result in further engine damage.
This is a fairly common problem with Ford’s 6.2L F150, F250, and F350 engines. Again, this does not necessarily imply that it is widespread. On the internet, a lot of things can be exaggerated. In any case, valve spring problems on the Ford 6.2 V8 can and do occur. Keep an eye out for potential issues north of 100,000 miles.
Ford 6.2 Valve Spring Symptoms
On a Ford 6.2 V8, the following symptoms may indicate a broken valve spring:
- Rough idle
- Power loss
- Knocking sounds
Typically, the symptoms of a broken valve spring are quite noticeable. You’re likely to experience a rough idle, inefficient operation, and misfires. Misfires on multiple cylinders can also occur on the 6.2 engine, even if only one cylinder has a valve spring failure.
Power loss is sometimes difficult to detect because it frequently affects only one cylinder. Additionally, you may notice the 6.2L V8 making a knocking or rattling sound.
6.2L V8 Valve Spring Replacement
On Ford F150, F250, and F350 engines, the valve cover(s) must be removed in order to access the valve springs. Additionally, the proper tools are required to remove and replace any defective valve springs. While this is not a particularly difficult do-it-yourself project, those with less experience should leave it to a mechanic.
Valve springs are extremely inexpensive for the 6.2 V8. Each spring will cost approximately $4-6, or $60-80 for the complete set. Labor costs can quickly add up, bringing the cost of Ford 6.2 valve spring replacement to around $300-700. On a high mileage engine, you may want to consider replacing all valve springs, which can result in higher replacement costs.
2) Ford 6.2 Oil Leak Problems
Numerous engines develop oil leaks as they age and accumulate mileage. Rubber gaskets degrade and crack over time as a result of age and heat cycles. There are several documented problems with the valve cover gasket that result in excessive oil consumption.
Certain Ford 6.2 V8 engines manufactured between 2015 and 2016 exhibit leaks from the baffle on the right side valve cover. Ford issued a Technical Service Bulletin to address this issue.
We’re really looking at the population as a whole, not just that small sample size. Oil leaks can and do occur, particularly on older Ford 6.2L Boss engines with a higher mileage. The valve cover gasket is a frequent source of oil leaks. Oil pan gaskets and main seals, on the other hand, can cause problems.
We don’t believe it’s accurate to refer to this as a truly widespread issue with the Ford 6.2. It is a natural property of gaskets to degrade and leak over the course of an engine’s life.
Apart from the minor flaw in 2015-2016 models, there are no other design flaws that should result in premature oil leaks. Having said that, some 6.2 V8 engines will develop oil leaks after 100,000 miles (age is also an important factor).
Boss 6.2 Oil Leak Symptoms
Several symptoms of oil leaks on the Ford 6.2-liter engine include the following:
- Visible oil leak
- Oil loss
- Burning oil smells or smoke
There is little to discuss in this section. Apart from a visible leak, oil leaks rarely cause noticeable symptoms. If the situation is severe enough, you may notice that your 6.2 V8 is losing oil at a faster rate than usual. This can also result in the smell of burning oil or smoke emanating from the engine bay.
Ford 6.2L Oil Leak Fix
Of course, the precise solution to 6.2 Boss oil leaks is highly dependent on the source of the leak. Two of the more common areas for leaks on the Ford 6.2 F150, F250, and F350 are the valve cover gasket and the oil pan gasket. Fortunately, gaskets are reasonably priced. However, labor costs can quickly add up depending on the nature of the leak.
Expect to spend between $200 and $500 on labor for gaskets. Moderately experienced do-it-yourselfers should have no difficulty completing the repairs.
3) 6.2L V8 Rough Idle
Rough idle is a broad subject to cover. Additionally, it is rarely a problem on its own. Rather than that, rough idle is a symptom of a more serious underlying problem. The Ford 6.2 spark plugs are the primary focus of this article. The engine utilizes a total of sixteen spark plugs. That is correct – each cylinder has two spark plugs. This leaves a lot of room for mishaps.
Because spark plugs are routine maintenance, we do not consider this to be a true issue. To digress briefly, we said similar things about oil leaks above because the majority of issues occur at high mileage. The point is that the Ford 6.2 engine is extremely reliable, and we don’t have many genuine issues to discuss.
Anyway, we’re back on track here. The 6.2L V8 spark plugs are a source of rough idle and other drivability problems. There are numerous other issues that can contribute to a rough idle, such as the valve springs discussed previously.
With sixteen spark plugs, however, there is a good chance that one of them is to blame. The majority of Ford trucks equipped with the 6.2-liter V8 are subjected to rigorous performance, towing, and other demands. This is hard on spark plugs, so don’t skimp on this routine maintenance.
Ford 6.2 Spark Plug Symptoms
On the 6.2L Boss, look for the following symptoms that typically indicate a potential spark plug problem:
- Rough idle
- Power loss
On the 6.2 V8 engine, a rough idle and misfires are two common symptoms of spark plug problems. Along with the misfire codes, you may notice a service engine light.
Power loss is not a significant symptom, particularly when only one cylinder has a faulty spark plug. If multiple cylinders are misfiring simultaneously, you may have another issue, as multiple spark plugs rarely fail simultaneously.
6.2L Boss Spark Plug Replacement
Spark plugs are among the simplest components to maintain/repair. Even inexperienced do-it-yourselfers can complete this job in the driveway in a matter of hours. When one spark plug fails, we recommend replacing all of them.
This is not always the case if a spark plug fails prematurely. However, if they have not been replaced in a long time, the remaining spark plugs are likely to fail as well.
Spark plugs typically cost between $7 and $15 per piece. This adds a small additional cost, given that the Ford 6.2 engine utilizes 16 spark plugs. Nonetheless, this is a job that the majority of people can complete for $100-150. Add another $50-150 if you intend to take your vehicle to a repair shop.
4) Ford 6.2 Boss Oil Consumption
Alright. We’ll be brief on this subject, as excessive oil consumption does not appear to be associated with any other problems. As the Ford 6.2L V8 engine ages, it has been known to consume oil at a fairly rapid rate. Some may require a quart or two of oil in between oil changes. Engines naturally consume a little more oil as they age.
One area that can result in excessive oil consumption is the 6.2 Boss PCV (positive crankcase ventilation) system. Oil leaks, particularly around the valve cover gasket, can also result in increased oil loss (not truly consumption). Again, there are no significant issues associated with oil consumption.
If it is extremely severe, it is worth investigating further. With increased age and mileage, it is possible for some cylinders to lose compression and consume more oil. This is occasionally a sign that the engine is nearing the end of its useful life.
Again, this is not a common occurrence unless the vehicle has exceeded 200,000 or 250,000 miles and the engine is beginning to show signs of wear.
Reducing 6.2 V8 Oil Consumption
Here are a few things you can do to help mitigate the Ford 6.2 Boss engine’s high oil consumption:
- Shorter OCI
- Avoid excess idling
- Service PCV system
Occasionally, a shorter oil change interval (OCI) can assist in lowering oil consumption. Oil becomes thinner as it ages, which increases the likelihood of blow-by and consumption.
Excessive idling contributes to this by shortening the life of the oil; mileage is not everything when it comes to the 6.2L engine’s useful oil life. Additionally, servicing the PCV system and addressing any oil leaks may be beneficial.
6.2 Boss V8 Reliability
Is the Ford 6.2 V8 a dependable engine? The Ford 6.2L V8 engine, in our opinion, is a dependable engine. It is designed to power high-performance F150 models such as the SVT Raptor as well as Super Duty trucks such as the F-250 and F-350. The majority of Ford 6.2-liter engines have a tough life, but this engine is “built Ford tough.”
We found ourselves writing about issues that are technically not considered common. Spark plugs require routine maintenance. Oil leaks are a normal part of engine aging.
As such, we believe the Ford 6.2L V8 is an all-around excellent engine. It does not quite match the performance of the 6.7 Power Stroke diesel engine. The 6.2 V8 engine, on the other hand, does not come with the $10,000+ price increase and remains a solid, reliable engine.
Certain aspects of 6.2 Boss reliability are entirely dependent on luck of the draw. Not all engines are built identically, and we have no control over this. However, we do have some control over the maintenance component.
Change the oil in the 6.2 V8 on a regular basis, use high-quality oils, and address issues as they arise. Maintain an up-to-date maintenance schedule, and the Ford 6.2 V8 is likely to reward you with a long, reliable life. Numerous examples exist of the 6.2L Boss engine lasting between 250,000 and 300,000 miles with few or no major issues.
Ford 6.2 Common Problems Summary
In 2011, Ford began offering the 6.2L V8 engine in a limited number of high-performance Ford F-150 models. It now powers the Ford Super Duty F-250 and F-350 trucks as the base engine. 385hp and 430 lb-ft of torque make this engine more than capable for the majority of owners.
Those frequently towing absurdly large loads may prefer the more capable 6.7L Power Stroke. However, it is overkill for the majority of drivers and comes at a hefty price, making the Ford 6.2 an excellent alternative.
We believe that less than half of what we discussed in this article is even remotely debatable as a problem. Additionally, they are not widespread issues that affect a large number of engines.
Regardless, no engine is perfect, and the 6.2 Boss is prone to failures and issues on a rare occasion. When something does go wrong, valve springs, oil leaks, and spark plugs are some of the most common issues. Certain engines also consume a lot of oil as they age.
However, with proper maintenance, the 6.2L V8 is likely to reward you with a long, reliable life. These engines were designed to withstand the rigors of a hardworking life, and they do an admirable job of it.
What are your thoughts on the Ford 6.2 V8? Leave a comment and inform us!
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