Category: Maxxforce 7 starts then dies

Activar o desactivar las cookies

Fastback Top Member. Canada Posts. United States Posts. Trailboss Senior Member. Tb Senior Member. United States 82 Posts. USA 69 Posts. USA 61 Posts. USA Posts. Bassman Top Member. Brad Barker Administrator. Cal Mc Advanced Member. The driver takes off No codes, good fuel pressure, and oil pressure I had called international near me talked to their Forman and he said the cure is a new fuel filter and diesel treatment So has anyone else had any problems with buses dying around 10min after startup?

I don't see how a filter that is miles old needs to be changed when nothing is physically wrong with it! Have they tried different fuel? Are these HEUI engines or high pressure common rail? The oil pressure runs into the 80's and 90's PSI if you try to drive it, and it will "chug" until it warms up a bit then falls to about 50 or 60 psi.

Sometimes it will just stall if you don't give it enough time to get warm. I let mine idle for about 20 minutes to warm up when the temperatures are below C.

In this time I can do all my pre-trip and paper work.

2012 Prostar maxforce 13 Cranks but hard to start after sitting

They will restart right away after a stallbut do not like to be cold. At least that's how mine is. It is plugged in as well. Formerly "83ChevroletWayne" Pic courtesy of: "schoolbusdriver. Is the approved oil being used? If this is the case i'll have to mention this to the boys at the shop.

It sure would be interesting to try the 5W in one of the buses and see if it helps. We have been running 5W year around in our buses since the EGR engines came out, about 10 years now. We do have a 6. It's just baffling that with some of our new ones with only k on the odometer having such issues and not even at the first oil change interval. The distributor may have told you to run 10W in the buses in your climate but that doesn't mean the factory fill in Tulsa, Oklahoma wasn't 15W Also it would take several changes to get the full benefit of the lower viscosity oil as the DT retains about 6 quarts of oil that never drains out during an oil change, another reason to just run 5W the year around.

Maybe a flaw or trash from the factory?? See it comming, can seem close to sudden :fuel. Fuel filters are a consumable item, up to you to service and maintain so don't expect dealer to send you some. Is there a fuel strainer some where?Discussion in ' International Forum ' started by habfleetMay 6, Each company we work with has specific experience requirements for their drivers.

In order for you to receive the best possible offers, please make sure your answers above are accurate prior to submitting. Log in or Sign up. Find Trucking Jobs. May 6, 1. Good Morning Truck had intermittent problem of randomly shutting down or all engine lights would flash and a beeper would be going off. Been to dealer several times they say can't find anything. Usually driver shuts it down waits a few minutes and good to go.

Unit broke down in Baltimore with above symptoms went to dealer they replaced speed sensor. Truck was dropped off at shop for PM driver made comment it was hard to start in AM. Truck sat over night in shop I did notice when changing oil the both location for filters had no oil in the housing. Completed PM truck hard to start could see fuel in Davco filter but did notice oil gauge not moving while cranking. Truck sat over night extremely hard to start. Again fuel showing in Davco filter oil pressure ga.

Not sure if I have a oil pressure issue or maybe a crank sensor or no oil pressure no fuel pressure. Any help appreciated and direction to start. Thanks in advance. Name Email Phone Yes, let employers and TruckersReport text me with new opportunities, job alerts and other career information to the number I provided. There is no charge for this service, but standard message and data rates may apply. May 7, 2.

During cranking, it is common for the cluster to not always show data immediately until after the engine has fired. I would focus on the hard start first. You could have fuel drain back due to either a suction side air leak, or faulty check valve. Your davco will have an inlet check valve.

dt466 dies and will not start

You can remove it and check to make sure there isn't any debris in there, make sure the ball and spring is in good shape. Or, the other problem is the low pressure fuel pump is getting weak and cannot draw fuel while cranking. This is a bit more rare, but not uncommon. If it fires up after a few pumps of the hand primer, I would say the pump is going bad. HeavydMay 7, May 17, 3.

Throughput vs bandwidth

Thanks Heavyd I have the truck back. I replaced a couple of the fittings on the fittings at Davco filter housing and at the primer pump. The were correred. Replaced check valve in davco filter it looked ok.Each company we work with has specific experience requirements for their drivers. In order for you to receive the best possible offers, please make sure your answers above are accurate prior to submitting.

Log in or Sign up. Find Trucking Jobs. Nov 13, 1. We are having our DT towed for the 3rd time. All 3 times same problem: the truck will be driving fine and all of a sudden the truck dies and will not start. One of the guys here said that he drained water out of the fuel and the truck started, but then it didn't start next day so we called local mechanic and he checked electrical connectors and found that fuse in battery box was not making connection and shorted.

Driver said he driving about 50 mph on 2 lane road when he realized something was wrong because the cruise control stopped. He said the accelerator was slightly responsive a few times but the truck stopped and would not start even after it cooled off. Today Driver was exiting freeway on an uphill ramp when he intentionally disengaged the cruise control.

This time the pedal was unresponsive. So we are having it towed back to the International dealer. Anybody know what is wrong with our truck. Obviously the professionals are clueless. Thanks Granny DP. DPForumDogNov 13, Name Email Phone Yes, let employers and TruckersReport text me with new opportunities, job alerts and other career information to the number I provided. There is no charge for this service, but standard message and data rates may apply.

Mario maker 2 sprites

Nov 13, 2. I know nothing about Internationals or their engines but one thing stands out in your post: the burnt fuse.Mechan1c Top Member. USA Posts. United States Posts. TheRide Senior Member. The fuel pressure sensor is brand new but isn't registering psi. On servicemaxx pro it shows pressure as "error" in red. I'm thinking there must be a short somewhere but don't know where to look. Any ideas? When it comes on the engine loses power but when I clear the code it runs fine.

It will throw the same code again in a few minutes after I clear it. When this bus first came in the shop it wouldn't hardly idle. The primer pump was leaking and was not serviceable so I replaced the whole housing. It ran better after that but still wasn't right. After I got a laptop and servicemaxx pro I tested the injectors and found that 1 was having some issues so I replaced it, which made it run even better but still not quite right.

The only code it throws now is the low fuel pressure. See "Performance Specifications" section of this manual. Monitor sensor voltage. If code is inactive, monitor the Parameter Identifier PID while wiggling the connector and all wires at suspected location.

If DTC is active, proceed to the next step. Disconnect engine harness from sensor. NOTE: Inspect connectors for damaged pins, corrosion, or loose pins.

Maxxforce 7 Ongoing trouble (that no one can fix)

Repair if necessary. Connect breakout harness to engine harness. Leave sensor disconnected. One of the rubber sleeves on the metal fuel lines was pretty much gone. How it wasn't leaking I don't know. I'm thinking it was sucking air and aerating the fuel. Parts will be in tomorrow, I'll post up when I get it back together.Log In. Thank you for helping keep Eng-Tips Forums free from inappropriate posts.

The Eng-Tips staff will check this out and take appropriate action. Click Here to join Eng-Tips and talk with other members! Already a Member? Join your peers on the Internet's largest technical engineering professional community. It's easy to join and it's free. Register now while it's still free! Already a member? Close this window and log in.

Are you an Engineering professional? Join Eng-Tips Forums! Join Us! By joining you are opting in to receive e-mail. Promoting, selling, recruiting, coursework and thesis posting is forbidden. Students Click Here. Related Projects. The power stroke, specifically the 6. Past 40, to 60, miles you may be on borrowed time. The failure progression as service manager explained it to me is First; The high pressure pump wears and puts metal particles in the common rail.

Second; The particles jam the valves open or partly open in the injectors. Third; Over-fueling melts pistons, overheats a cylinder, leads to cylinder washing and accelerated cylinder wear or some combination of the above. If you are lucky, one injector will jam so far open that the common rail cannot build sufficient pressure and the engine will not start. Replace injectors and fuel pump and drain the fuel tank and flush the fuel lines. Question 1 Is the original problem a bad pump design, or a bad injector design?

Question 2 Is there any remedy other than a different make engine?.

Ford Faulty Fuel Pressure Regulator Symptoms

There is rumoured to be a drop in replacement from Cummins. From rumour to anecdote; A mechanic friend told about servicing a fleet of about trucks on a large pipeline project several years ago. Admittedly the trucks were somewhat abused; Cold weather starts at minus 30, idling for days at a time at minus 30 to avoid starting issues.

Of the trucks about were Powerstrokes. Out of Powerstrokes about 90 suffered early engine failure. Most failed at or under about 60, km or 40, miles.

One truck lost the engine the second time on the way back from the dealers to the jobsite. The class action suits are ramping up. Bill "Why not the best?

And in the old days diesel engine fuel delivery component failure was very low. Even now many old engines will start up and run just fine. Nothing like modern computerized engineering is there?If the fuel pressure regulator malfunctions or fails completely, one or more symptoms will occur. While testing will need to be performed to verify the failure, if any of these symptoms are present, a faulty fuel pressure regulator may be to blame.

A fuel injected vehicle, with proper fuel pressure, will start up quickly, if no other malfunctions are occurring. If the regulator has failed completely, the vehicle will crank, but not start at all. Avoid cranking the starter for too long, or you will burn it up and add the starter to your list of needed parts. Under acceleration, the vehicle should accelerate smoothly no matter how hard or light the gas pedal is depressed.

If the Ford will not accelerate smoothly, but instead jerks and jumps under acceleration, your fuel pressure regulator should be inspected.

A poor fuel pressure regulator can also cause your Ford to stall while idling or driving. While it will most likely occur while idling, it is not unheard of for the car to stall while you are driving down the road. Gasoline needs air to burn. In an overly rich scenario, there is not enough air for the mixture to achieve combustion; if there is too little air, the combustion will also fail to occur.

A faulty fuel pressure regulator can also be to blame for a sudden decrease in fuel mileage. These symptoms can also occur with a plugged fuel filter, failing fuel pump, or faulty PCM. In the event you have these symptoms, it is best to have the entire fuel system inspected by a qualified Ford fuel system technician. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.

To submit your questions or ideas, or to simply learn more about It Still Works, contact us. Stalling A poor fuel pressure regulator can also cause your Ford to stall while idling or driving.

Poor Mileage A faulty fuel pressure regulator can also be to blame for a sudden decrease in fuel mileage. Alternatives These symptoms can also occur with a plugged fuel filter, failing fuel pump, or faulty PCM.

About the Author This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.Once logged in and you have uploaded your resume, it takes only a single click to bookmark any type of our content. Mechanics Hub - August 21, Bookmark this Unfortunately you need to be logged-in to use bookmark system.

Login Register. I can count on one hand how many times I've read an entire operation and maintenance manual. These manuals come with a new vehicle and I would guess they don't get much use unless a specific question arises.

We received new International buses recently powered with Maxxforce 7 diesel engines and since they are a model I am not familiar with the best resource to start with is the operation and maintenance manual. Since I'm reading the manual front to back I thought it would be interesting to share this information. You would be surprised how much information there is in these manuals.

There's much more than how to check the oil or how much coolant capacity the engine has.

Honda pioneer 700 reviews 2015

On the contrary I learned some valid facts about the Maxxforce 7 that will help me with maintenance care and scheduling. The crankshaft and camshaft positions sensors are monitored by the ECM to calculate rpm, fuel timing, fuel quantity and fuel injection duration.

Injection is controlled by the ECM for a more precise fuel delivery and combustion process. The ECM also controls emissions and cold starts. The low pressure fuel system consists of a low pressure fuel module, primary and secondary fuel filters, fuel cooler and a self priming electric fuel pump. As with all EPA compliant diesel engines an aftertreatment system is placed in the exhaust system to capture soot and other particulates before exiting into the atmosphere.

The DPF diesel particulate filter converts harmful exhaust into carbon dioxide using a regeneration process. They are super clean products that reduce soot buildup in the exhaust system. So don't use the old diesel fuel and standard oil in your new diesel engine built after because it will totally ruin your fuel and exhaust system. I knew this engine had an electric fuel pump but didn't know the exact procedure for priming the filters after servicing or if the bus runs out of fuel.

NOTE: You never fill the fuel cannister with raw fuel that's unfiltered. Assemble the filters dry and then go through the priming process. After replacing the fuel filter: 1.

Off for 20 seconds On for 15 seconds. This will obviously allow the fuel system to prime up slowly instead of turning the key on and cranking away until the engine starts. You could definitely save some starter wear and battery depletion following these procedures.

We also do other major servicing at that time such as air dryer, transmission, valve sets if requiredspring brake pots every 5 yrs etc. Engine oil and filter change interval: hours or 6 months if average speed is lower than 15 mph. It's obvious that service intervals has increased due to diesel engine emission technology, cleaner engine oil and diesel fuel products.

The drastic decline of harmful hydrocarbons has reduced emissions and the carbon footprint which we should all be thankful for. I hope this report has enlightened you in some way Diesel Engines.

All You Need to Know to Fix the 7.3L PSD T444E Engine incl CPS, IPR, ICP, FPR, etc.

thoughts on “Maxxforce 7 starts then dies

Leave a Reply

Your email address will not be published. Required fields are marked *