Paccar mx engine problems It's recognized for its fuel efficiency Examining a major oil leak on my T660 and what to do about it. Prime the fuel system and i Paccar ECM Repair Service. These updates aligned with evolving EPA emissions standards and improved real-world efficiency for both linehaul and vocational applications. Benefits of Paccar MX-13 Tuning Increased Horsepower and Torque. A failed actuator can be due to a number of things. Here are just some of signs that your actuator is having some problems: Complete power loss; Intermittent low pressure; Overboost; Low boost Jul 19, 2015 · One with 160,000 milesother 100,000 miles no real problems other then a couple of recalls. It sounds like you've lost power to something but code descriptions would help point to what The Paccar MX13 ECM is a computer that controls the engine in trucks made by Paccar. Nov 6, 2023 · Routine engine oil changes are fundamental for maintaining your PACCAR MX-13 engine. road tested truck and watched parmaters to see if clutch switch Dec 24, 2024 · Grab a torque wrench and follow the manufacturer’s specs. Selected chassis will have the camshafts replaced. How can I clear a fault code on my Paccar MX 13 engine? Jan 23, 2023 · Truck Maintenance - PACCAR MY21 and newer MX11 and MX13 injector troubles - Hello All, I represent one of the fuel system suppliers on the PACCAR MX engines. The factory was selected for the 2017 Quality Magazine Plant for its exceptional quality and innovation. Check Engine Light: This light may illuminate on Jan 13, 2022 · We will talk about the common actuator problems with the Paccar MX 13, as well as possible fixes you need to know. However, its turbo actuator can face issues. Let's first look at the engine features. Apr 16, 2025 · How Good Is The Paccar Mx-13 Engine? The PACCAR MX-13 engine is reliable, fuel-efficient, and durable. Wrench check engine light came on and the truck drives like I have 30k in the box, even when empty. Understanding these issues is crucial for truck owners. Yes, Paccar Kenworth and Peterbilt have a connection, but there is no requirement that they are mated together. Because i know these engines use exhaust brake as well and engine brakes on the valves. Could this cause the engine to have 0 boost pressure? Apr 25, 2025 · The PACCAR MX Engine Series includes the MX-13 and MX-11 engines. This comparison examines the PACCAR MX-13 and Cummins X15 engines, focusing on performance, reliability, maintenance, and resale value. They ensure that the engine's internal components remain well-lubricated, minimizing friction and averting overheating. Nov 10, 2023 · I've not heard of this problem with Paccar MX engines, but we've had more than our share of problems with them. Customer: paccar engine epa 10 jakes are kicking in but not holding back ive ran the overhead twice ran with valve cover off doesent look like any of the heads are cracked. I would never want a load of live animals depending on one. The decision to EGR delete from your PACCAR MX13 diesel engine brings numerous benefits, both in terms of performance and long-term durability. I keep having derate issues that stem from the DEF system, IF my truck does an auto regen it does like 4 a day. You won't have to worry about it breaking down for years. In addition to being extremely dependable and long-lasting, the engine has a low failure rate. Mar 13, 2017 · If you're pulling heavy loads and running the engines at 1100 or 1200 rpm and it's working fairly hard, the cylinder pressures are a lot higher than at a higher rpm and create more heat and put heavy strain on the components causing premature wear and/or damage to the engine. tested turbo and back pressure valve all tested good done sweep on turbo had to replace actuator. Drove Pete '13 with Paccar, then got a '15 Pete also with the Paccar. (150k miles for line haul or 60K miles for Vocational / Severe Duty / Refuse / Delivery) Chassis Affected All T680 NextGen, T880, and W990 chassis equipped with Engine Model Year 2021B and Later MX-11 and MX-13 engines Action Paccar MX-13 derate issues I’m a driver, I’m driving a 2018 pete 389 with a MX-13. Dec 12, 2022 · It's kind of like Burger King - you get to have it your way. In this article, we’ll take a look at some of the most common Paccar MX13 ECM fuel problems and what you can do to fix them. Aug 28, 2012 · Started happening about a week ago. Paccar MX 13 Turbo Actuator Problems. Below are common reasons for a Paccar MX13 engine to suffer loss of power and how you can fix them. The MX-13 engine , with its 12. I am interested to learn of ANY fuel injector related troubles on these engines. Jan 9, 2024 · ECM tuning involves modifying these parameters to unlock hidden potential, subsequently improving engine efficiency and overall truck performance. One of the primary advantages of Paccar MX-13 tuning is the potential for a substantial increase in horsepower and torque. This engine is known for its robust design, featuring compacted graphite iron (CGI) in the block and head. Investing in maintenance and upgrades will help you enjoy a powerful engine for years. Jun 9, 2019 · I feel like three letter acronyms hurt the intial feedback on the MX-13. Also Paccar has extended the warranty on injectors in the 21 to 23 models to be covered under 10yr 435 mi emissions due to the issues customers are experiencing. It first came out in 2010. 7 Detroit Engine; Diagnosing and Repairing a Celect Plus ECM from an N14 Engine; The Importance of Replacing Your ECM Battery on Time; How to Fix ECM Communication Issues in Detroit Series 60; Resolving Common Failures in PACCAR MX 13 ECMs Oct 3, 2018 · Looking for help to solve PACCAR 13 (epa10) EGR Delta Pressure (411-11 code) & DPF Purge Air Actuator (P3842 code). Users appreciate its low maintenance needs and longevity. You'll save money on fuel, for starters. The PACCAR MX 13 engine is renowned for its reliability and durability. The engine manufacturer is a separate entity. Introduction To Paccar Mx 13 Turbo Actuator Issues. Like all computers, it can have problems from time to time. A Doctor Paccar Video. Frequently Asked Questions What Causes Back Pressure Valve Issues In Paccar Mx-13? Back pressure valve problems in the Paccar MX-13 often stem from blockages, wear, or incorrect installation. This is a repair service for a 2010 - 2022 Paccar ECM found on semi-trucks with MX-11 and MX-13 engines. That’s your ticket to a properly sealed engine. Performance. My paccar has over 400k and no problems. In this video I revisit the Paccar M13 Power Loss issue with air leak complaint. Jul 24, 2023 · Loss of power in an engine is when it functions at a lower speed than expected while you are accelerating. These emissions systems, while essential to meeting environmental standards, come with their fair share of problems, particularly when it comes to PACCAR MX13 fault codes and decreased engine efficiency. Common Symptoms of Paccar MX 13 Head Gasket Problems Overheating. Apr 23, 2025 · Fault Codes for PACCAR MX-13 (2017–2020) Here is a list of fault codes you may encounter on a PACCAR MX-13 engine from 2017 to 2020. 3 so again a wash for me. The pressure after BPV was about 14psi at idle. What Is The Problem With The Paccar Mx 13 Engine? The Paccar MX 13 engine often has issues with the fuel system, turbocharger, and emissions control. This article will cover reasons for Paccar MX 13 injector problems, their fixes, and ways to prevent them. This engine provides excellent performance and is ideal for commercial trucks. Fuel System Vigilance Jun 18, 2024 · The Paccar MX13 ECU is a critical component in modern trucks. These fuel injectors spray fuel into the engine’s combustion chamber at high pressure. The PACCAR MX-11 engine, known for its powerful performance and reliability, is a staple in the heavy-duty diesel engine world. A PACCAR MX engine is found in Kenworth and Peterbilt designed for class 8 heavy duty trucks. Paccar ECMs can be found in both Kenworth and Peterbilt trucks. Sep 27, 2023 · In this article, we shall discuss the problems associated with the Paccar Mx-13 engine, the common symptoms, and how to fix the issues when they arise. Rear gear train is quiet and smooth though. Common Paccar ECM Issues. Have replaced cam and crank sensors, verified Having a crank no start issue and a code j1939 Paccar MX13. Nothing but trouble, never again. Then every 120-150k. I have more concerns with the emissions than the engine but on problems so far. Going Through The Most Common Paccar Engine Problems Paccar engines are some of the most popular and reliable engines in the heavy-duty trucking industry. X15 was doing 45-50 which can cause problems insofar as scheduleing. w though yes the paccar is innemic as hell and takes a long time to get up to speed on even flat ground and is capped at about 20 on 64 in va for example. At its core, the PACCAR MX-13 Engine isn't just machinery; it's the definition of power. The earliest version (in the '13) did not have a fuel rail system that works, so had all of the problems pulling hills as mentioned plus my check engine light would come on 10+ times a day. There are two PACCAR engines PACCAR MX11 engine – 11 liter (355HP - 445HP) PACCAR MX13 engine – 13 liter (405HP Have a 2012 paccar MX13 with p0017, crank not in position with engine. When it does, it can cause fuel issues that will just get worse over time. Many users praise their performance and durability. 9-liter displacement, offers a power range of 380 to 510 horsepower. Renowned for its performance, fuel efficiency, and durability, the MX-13 engine, when properly maintained, can serve your heavy-duty trucking needs for Jun 30, 2017 · We have two 2013 t-660 kw with paccar engines and auto shift trans. The engine then gets too hot. Thanks for watching ! I truly appreciate each Jun 26, 2021 · Though the MX gets 7 on flat country where the X peaked at 6. Some common issues with Paccar engines and how to check for them and how to get ahead of the game on breakdowns. 2012. Jun 26, 2021 · Keep in mind the MX engine can be serviced under warranty at both Peterbilt and Kenworth dealers if one or the other is better in your area. Each brand offers distinct advantages and potential drawbacks. We had some 2013 485hp MX 10,s and they were total garbage worse piece of junk I have ever driven, at least in new trucks. Mitchco Dec 12, 2010 · They are the only engine with a B10 rating meaning they only expect 10% of the engines built to have a catastrophic failure before a million miles. Jul 3, 2023 · The MX 13 engines are known for their strength and high performance. Paccar MX-13’s 450,000-square-foot engine and technology complex in Columbus, Mississippi, assembles each engine. While the customer is in the dealership for this repair, collect the necessary data for the survey. Jul 18, 2024 · The benefits of using a Paccar MX 13 turbo engine Having a Paccar MX 13 turbo engine in your truck has numerous advantages. Understanding what may cause this issue is crucial for fixing it. The Paccar MX13 ECU, or Engine Control Unit, acts as the brain of the truck. May 14, 2013 · Update, the engine is giving two codes: P2544 CAN communication - Message (PROPB_VIC) data error, Engine brake switch from vehicle control system P0079 BPV position - Voltage too low or short circuit to ground The shop is looking into the Back Pressure Valve tonight. Fuel injector failure is one of the most frequent issues with PACCAR engines, particularly the MX-13. I replaced all fuel filters and I also replace two fuel lines in the passenger side plus the t fittings in the center of the frame there were two that I replaced if I let my truck sit I lose my prime and my engine I don't know what the problem could be the I don't think it's fuel pump or sensor I shut off passager side fuel tank EPA 2021 & EPA 2024 MX Engine Fuel Filter ReplacementRoutine Maintenance Jun 1, 2023 · Hello from Blackwater Diesel in Clearwater, Florida, your trusted partner in professional diesel engine service and repair. 9-liter engine delivers up to 510 horsepower and 1,850 lb-ft of torque. If you could give me a description of the trouble, and the reported cause if Feb 17, 2021 · Having air getting my system somehow in my paccar MX 13 engine. After the MX 13,s came out we got some of those. Without a functioning ECU, a truck's performance can suffer significantly. 1. The 2 engines were night & day. When dealing with PACCAR MX13 PCI problems, deciding whether to repair or replace the unit can be a tough call. Stay proactive to ensure your Paccar MX-13 runs smoothly. Let’s dive into the innovative design elements that set the PACCAR Jun 22, 2014 · All paccar engines require initial overhead done at around 40k. These problems can affect the engine’s performance. This electronic control unit manages various engine functions to ensure the vehicle runs efficiently and meets emission standards. The issues is a Paccar MX13 starts up after a fuel filter change and runs for 5 minutes and then dies out. Almost like going from stage 3 to 2. Our team of experienced technicians understands the intricacies of various engines, including the popular PACCAR MX-13. Understanding Horsepower Settings in a 12. You choose the brand and size of engine and Nov 4, 2022 · Tracking down a problem now so might get another shop visit. Introduction PACCAR has selected specific chassis with EPA2017 MX-13 engines for re-inspection. At Merx TT, we advocate for a disciplined schedule for oil and oil filter changes to maintain engine performance. Back to @c. But overall, almost 400k miles in 3 years, only 2 shop visits and a bunch of minor repairs I did myself. However, a common flaw among them is injector problems. got a new egr pressure sensor. The overhead is not hard to do on these engines. 4 days ago · RE: PACCAR MX-13 problem These engines also have a ACM, without knowing the code descriptions any diagnosis here is relatively futile. The engine undergoes rigorous testing and quality control measures to guarantee its Mar 3, 2018 · The MX is a European engine(DAF), it's also a pushrod engine. it has triggered a Derate. We still have a couple but switched over to Cummins and have not looked back. Transmissions are ok, they do cause some trouble but the engine is a nightmare one is in the shop right now for the third time this month for the same electrical problem. Oct 17, 2022 · The BPV operation test also failed The temp after BPV was -1476 degrees which did not seem right. The Paccar MX 13 engine is known for its reliability. Its robust construction ensures a long life cycle and fewer mechanical failures relative to some other engines in its class. S. They are a popular choice in the trucking industry. This lead to a MIL light that seemed to always be on with a laundry list of codes. Both options have 45 - Engine-MX Description PACCAR MX-13 EPA2017 Camshaft Replacement Release Date 8/17/2020 Revision History 08/18/2020 - Added a note to check warranty claim history before replacing valve guide seals. or Canadian PACCAR engine dealer or authorized PACCAR engine facility. It offers impressive horsepower and torque for heavy-duty applications. However, even the best engines can experience problems from time to time, especially with the heavy workloads they endure day in and day out. Detroit, Cummins, Mack, Volvo all have a B50 meaning 50%. Resolution Campaign Service all affected chassis that enter your dealership even if the customer identifies no problems with the chassis. The EPA required OBD monitoring to be on one engine model for every manufacturer, Paccar only had one engine. done brake test with davie and all six cylinders said not ok. Fault codes related to the ECM/ECU; Comms faults; Blowing fuses; Engine cutting out; No start; Unit dead. Most issues were repaired by software updates or bad Mar 8, 2025 · Reliability and Durability of the PACCAR MX 13 Engine. This is harmful to your Mar 13, 2022 · They are better than the MX 10. 3 days ago · think the vgt actuator is bad, you need insite to make simple hysterisis test to see if it passes, when i had no pass mostly it was stuck vgt motor inside, unplug connector and connect again with key on and see if it selfchecks, ive replaced a few with miles between 100-200k on local trucks with heavy idling, if you want to remove actuator you You can either use an OEM diagnostic tool called Davie 4 or an OTR Diagnostics tool to aid in repairs on your PACCAR MX equipped truck. This 3 Towing is covered to the nearest authorized U. Dec 18, 2023 · The 24-page case against MX-13 manufacturer PACCAR, Inc. No boost gauge, but oil, temps, etc all normal. The 13 has a different fuel system then the 12 and will walk away from the 12. So far I'm happy with it, but the engine brake seems to cut out around 1,200 rpms. com Common Symptoms. Oct 12, 2023 · A Paccar MX 13 fault code is a specific alphanumeric code that indicates a problem within the engine or related systems. It helps diagnose issues for effective repair. When they malfunction, it can lead to poor fuel economy, loss of power, and even engine misfires. Credit: youtube. Due note, the Engine brakes do not funtion either. When ordering trucks, the manufacturer really just builds the frame and body. Featuring advanced technologies and impressive specifications, this engine is widely used in commercial trucks. Its robust construction and heavy-duty components ensure long-lasting performance even in the most demanding operating conditions. Key Specifications Let's begin by delving into the essential specifications Unveiling the PACCAR MX-13 Engine. Conversely, when I worked for TransAm, the 2015 t680 with a paccar mx13 I drove couldn't go 3 months without a shop visit for a warranty repair and had numerous tows. Much better than the 10 but still had issues. contends that the company, which reportedly delivered more than 185,000 Kenworth and Peterbilt trucks in 2022 through its subsidiaries, has been less than truthful with regard to the purportedly high-performance engine. Without it, the PCI can't do its job of keeping the engine running smoothly. We have about 15 of them at work and for all the problems that come with them, I won't own 1. In addition, the Paccar MX %PDF-1. Nov 19, 2024 · Mechanics need to test these components to make sure the PCI is getting reliable power. Built to haul The PACCAR EPA MX-13 Engine is built for the long haul. Apr 25, 2025 · The PACCAR MX-13 engine (2021–2023) brought further enhancements in emissions control, fuel system precision, and onboard diagnostics—continuing PACCAR’s commitment to performance and uptime. 4 %âãÏÓ 116 0 obj > endobj xref 116 45 0000000016 00000 n 0000001711 00000 n 0000001862 00000 n 0000002263 00000 n 0000002725 00000 n 0000002916 00000 n 0000003527 00000 n 0000003564 00000 n 0000003601 00000 n 0000003715 00000 n 0000003970 00000 n 0000004499 00000 n 0000004748 00000 n 0000005369 00000 n 0000006436 00000 n 0000006569 00000 n 0000006754 00000 n 0000006781 00000 n Apr 4, 2025 · PACCAR engines are considered reliable and efficient. PACCAR MX-13: This 12. My '15 solved all the problems and was a great engine. Nov 16, 2019 · I recently moved out of a C15 379 and into an MX powered 386. Overheating is a clear sign of a head gasket issue. I do my own engine maintenance unless it's warranty or emissions related. Try not to idle extensively as it' really hard on dpf filter. j have changed air valve. Paccar MX 13 Engine Features The Paccar MX 13 engine’s design and engineering is a testament to Paccar’s dedication to quality. You can find complete definitions and troubleshooting information by looking these up in Diesel Repair. Infused with exceptional horsepower and torque, it propels Peterbilt trucks through the most demanding tasks with unprecedented strength and precision. So with BPV non fuctioning the engine brakes obviouly wont Engine Model Year (EMY) 2021B and Later MX-11 and MX-13 engines need an injector recalibration at the first C service. Jun 30, 2017 · We have two 2013 t-660 kw with paccar engines and auto shift trans. PACCAR MX-11 Engine Overview. Occasionally the light goes off and engine has full power, but it comes back on after just a few secs and power drops again. Dec 2, 2024 · While the Tech Center’s reputation is well-known, so is the location where Paccar MX-13 engines are manufactured. They would be my choice of engine up to 465 hp can't tell you about ones set higher. Two things that worked against them when they had cam issues, rear gear train is popular in Euro engines and the MX is rear gear train also which means pulling the engine to swap a cam. When the head gasket fails, it cannot keep coolant contained. So if you are losing power intermittently as well as having a significant a PACCAR is conducting an engine oil survey to study the effect of engine oil to engine longevity. Options for PACCAR MX13 PCI Replacement and Repair. olgd ppgq wyta ivuj cgdbrs wlpiv ioyrh jkghq klef ppz