How often do you replace boat engine manifolds

Typically you should replace boat fuel filters semi-annually sometimes more often depending on how much you use your boat. Jan 1 2000.

I think the cost was 980 per engine including tax for Crusader 454 fuel injected.

How often do you replace boat engine manifolds. The general consensus though seems to be replacement at 4 yrs for salt water and a bit longer for fresh. Ive seen plenty of fresh water manifolds go well over 10 yrs with no issues. M marks737 Cadet Joined Oct 2 2007 Messages 14 Dec 3 2007 5 Re.

When to replace manifolds and risers. In this way how long do manifolds and risers last. Risers on a FWC setup need to be replaced on the same timeline as a RWC setup 6-8 years.

For a FWC engine setup in theory the manifolds should last as long as the engine. Meaning if the boat is in a fresh body of water the engine and manifolds can last in upwards of 20 years. Jan 1 2000.

In SW use common recommendation for preventative maintenance replacement of ex. Manifolds and riserelbows on RWC engines is every 3-5 yrs. Much longer but not forever in FW.

Of course on full FWC boats ex. Manifolds usually tend to last the life of the engine so just the riserelbows are replaced. Meaning if the boat is in a fresh body of water the engine and manifolds can last in upwards of 20 years.

How long do MerCruiser risers last. About 4-5 years Simply so how often should risers and manifolds be replaced. As a general rule you should start inspecting your risers and manifolds thoroughly after having used them for two years.

Manifold With raw-water-cooled engines used in salt water you might expect their manifolds to have a three- to five-year life. Corrosion may warrant replacement in 10 years if an engine used in salt water has a closed cooling system. Riser Check risers and elbows starting at two years and annually thereafter if the boat is used in salt water.

The manifolds 500-600 hours of use or 5-6 years of age. So the manifolds are due and the risers are over due if they havent been replaced already. If you go beyond these hours or age you risk water intrusion into the engine causing severe damage.

Now what is the model of the engine. Have the risers been replaced. On average however youll have to replace them every 3 - 5 years.

Factors That Impact the Cost Its important to know that there are various factors that can impact the cost of these parts. Risers are a little easier to find at lower prices than exhaust manifolds but both of these will cost you a fair bit of money. It might also result in funny smells around the engine bay and you may experience a loss of pressure in acceleration and performance.

A faulty manifold must be taken off and inspected and replaced with new manifold. Its a large and complex part so that can be expensive. How often you need to change the oil depends partly on how frequently you use your boat.

Usually youll want to change the oil after a certain number of hours of use or in the fall before you put the boat away for the winter. When you change the oil also replace the filter gaskets and seals at the same time. How often depends on where the boat is located and how often its used.

Boats operating in Florida may get two or three years out of risers and not much more for manifolds while those in Maine may last five or six years. In fact the best policy is to not wait for any warning sign at all but to periodically remove and inspect the risers and possibly the manifold depending on what you find. A rough guide for inspection is annually after three to five years in saltwater and biannually in freshwater.

If you see signs of corrosion on the outside its past time. How often do you change the manifolds and risers is the same question as how long is a piece of string I am afraid. It all depends on the use.

Both this and our previous boat are trailered boats so they do not sit in the water all the time. Great boat and engine combo Id say. As mentioned I would suspect if your boat is a 99 model then.

1-16 - How to Replace Exhaust Manifolds Risers - YouTube. I think the cost was 980 per engine including tax for Crusader 454 fuel injected. I believe the old risers have been on for 13 years not sure.

When the salt water comes in from the pump it goes to the heat exchanger then exhaust riser and then the out. Everything else is antifreeze cooled. I would at least pull them annually or every other year so they dont get stuck.

You dont have to replace them. You can also get an idea if there is anything going wrong earlyfor example if you have a steam cleaned plug. For boats used in a salt water environment the manifolds risers should be checked regularly as part of your maintenance program.

How often will depend on where you keep your boat boats in warm sea water in southern States will likey need replacement more often than those in cooler seas further north. About 95 percent of the engine problems we see are due to lack of maintenance he says and most of them are closely related to failed risers and manifolds. Petzold recommends replacing saltwater-cooled risers and manifolds every five years at least.

Theres no doubt that this can be expensive. The Life Expectancy of the Marine Engine The average marine gasoline engine runs for 1500 hours before needing a major overhaul. The average marine diesel engine will run for more than three times that long and log an average 5000 hours under the same conditions.

The number of hours that. Ideally drain your oil right before the boat is hauled refill then run the engine for a minute or two to make sure everything is coated with clean oil. When you start the boat in the spring remember that all of the oil has drained into the pan and let the engine idle for a minute or two to recirculate everything.

The most popular service booked by readers of this article is Exhaust Manifold Gasket Replacement. YourMechanics technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. Also taking place during the mid 1990s we worked on this project that involved replacing the original 1 piece 30LX exhaust manifold that was used on the 140 Hp version engines up until 1995.

This project was initiated by General Motors when they discontinued the lower Hp 30L marine engine after deciding to go strictly with the 140 Hp 30LX. Typically you should replace boat fuel filters semi-annually sometimes more often depending on how much you use your boat. At Marine Diesel Specialists our marine diesel mechanics in Fort Lauderdale and our mobile marine mechanics in Punta Gorda perform regular maintenance on the fuel systems of numerous boats and yachts.