Results for "injector"

Engine Easy N/A 211 👍 0

Ford V10 Triton Engine Maintenance Guide: EGR Delete vs Regular Service Tips

Spent years doing regular EGR maintenance on my old gas motorhome without issues — but this 2007 Fleetwood 31' Tioga with Ford V10 Triton has me second-guessing everything. I keep reading conflicting information about EGR delete procedures on V10 engines, and I'm worried I might make things worse if I mess with it.

Is the EGR delete modification actually necessary on this 2007 3-valve V10, or am I overthinking this? I don't want to void any warranties or create problems that weren't there before. Would I be better off just sticking to regular maintenance instead of modifications? I'm looking for reassurance that I'm taking the right approach to keep this engine running reliably for years to come. …more

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Engine Hard Not recommended 207 👍 0

Ford V10 Turbo Kit for Motorhomes: Cost, Risks & Better Alternatives

Before every camping season rolls around, I face the same dreaded reality with my Ford V10 motorhome crawling up mountain passes like a wounded turtle. What are the realistic costs involved? Are there major risks to the engine I should know about? Is this actually worth doing or should I look at other options? …more

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Engine Medium 2 hours 132 👍 0

Ford V-10 Misfire Codes P0305 & P0307: Complete RV Engine Repair Guide for Motorhomes

Turned my compression tester on cylinders 5 and 7 and got 150 PSI readings, but I'm still pulling P0305 and P0307 misfire codes on my 2001 Ford E350 V-10. The engine runs smoothly overall, but the diagnostic codes are persistent.

I have replacement spark plugs and ignition coils available but want to ensure I'm following the proper troubleshooting sequence before investing time and effort. What is the recommended diagnostic approach for simultaneous misfires on cylinders 5 and 7?

Given that multiple cylinders are affected, should I prioritize certain components over others, or is there a systematic order that typically yields the most efficient resolution for this engine configuration? …more

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Engine Medium 3-4 hours 123 👍 0

Ford F53 Chassis Misfire Problems: Early Spark Plug & Coil Failure Solutions

Walked out to my 2021 Class A motorhome this morning facing the third Ford F53 chassis misfire this year and I'm done throwing parts at it blindly. We've got less than 20,000 miles on the odometer, but recently experienced rough running and got a check engine light. When I took it to a Ford dealer that services Class A rigs, they diagnosed misfires in two cylinders and recommended servicing the entire fuel system. I ended up having them replace all eight spark plugs, plug wires, and ignition coils since we were already dealing with failures.

The coach now runs better than it ever has since new, which makes me think the original components may have been subpar from the factory. What's really bothering me is that we shouldn't need major ignition system work this early in the vehicle's life. I'm curious if other owners of 2021 or newer F53 chassis motorhomes have experienced similar premature failures with their spark plugs, ignition coils, and plug wires? Is this pointing to some kind of quality control issue with Ford's ignition components on these newer chassis, and should I expect better reliability from aftermarket replacements going forward? …more

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Engine Medium 1-3 hours 118 👍 0

How to Fix Onan QD3200 Diesel Generator Fuel Leak Behind Air Filter

According to Murphy's Law, my Onan QD3200 generator is doing something bizarre — it's leaking diesel fuel from behind the air filter instead of where you'd normally expect fuel leaks. The fuel appears to be coming from somewhere behind the air filter box, and I'm worried about making things worse if I don't diagnose this properly. I've shut everything down for now because I'm nervous about safety issues.

I need to know the safest way to trace where this leak is actually coming from without creating a fire hazard or damaging anything. What are the most likely culprits in that area, and what's the proper procedure to identify the exact source? I want to make sure I approach this methodically rather than just poking around and potentially making the problem worse. …more

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Engine Hard 2-4 hours 116 👍 0

How to Fix Onan Cummins HGJBB 2.8 Generator Carburetor Problems After

Called the landlord about the Onan Cummins HGJBB 2.8 generator in my rental RV and he just said "figure it out" when the carburetor started acting up after winter. Left our 2017 Winnebago Travato 59K with its Onan Cummins HGJBB 2.8 generator sitting for almost a year (oops), and now it's throwing a tantrum. It's running rougher than a shopping cart with a wonky wheel, and the moment I try to put any load on it - like actually using it for something useful - it just gives up and dies on me.

I removed the carburetor, and my friend helped me clean it in a sonic cleaner. Now I'm stuck because I'm not sure if the throttle and choke linkage are correctly positioned when I reinstalled it. I've confirmed fuel is getting to the carburetor, but it won't start. I took some pictures showing the wire connections and mounting, hoping someone can help me figure out the precise linkage setup.

I'm pretty sure I know what's wrong (thanks, old gas and my laziness with fuel stabilizer), but I'm wondering if anyone can confirm my suspicions about what happens to these carburetors when they sit with stale fuel. Is this the classic 'your carburetor is now a museum of varnish' situation? And if so, what's the real deal on getting it cleaned up and running again? …more

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Engine Medium 1 hour 113 👍 0

How to Diagnose RV Hard Starting Problems: Fuel System Troubleshooting Guide

RV cranks for 10-15 seconds before finally firing up, and it's getting worse each week. Used to start on the first crank every time. Fuel pressure seems low at the rail but I'm not sure if it's the pump, filter, injectors, or something else entirely in the fuel system. …more

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Engine Medium 1-2 hours 108 👍 0

1990 Tioga E-350 Won't Start: Complete DIY Troubleshooting Guide

Turned the key in our "new" 1990 Fleetwood Tioga E-350 and my wife immediately said "that's not starting, honey" — now I'm completely stumped. The engine turns over like it wants to start but just won't fire up. I've already replaced the fuel pump inside the tank, but I'm wondering if another pump might need replacement. I don't want to just start throwing parts at it. What's the best systematic approach to figure out why my Tioga won't start? Are there common failure points I should check first on these older E-350 based motorhomes? …more

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Engine Medium 2-3 hours 103 👍 0

Cummins 400 Throttle Power Loss: ECM and Other Causes

Standing here looking at my first RV with a Cummins 400 that loses power whenever I hit the throttle, leaving me crawling up hills at 35mph while everyone flies past! My Cummins 400 has developed this charming habit of suddenly losing all throttle response. One minute I'm cruising along just fine, the next minute the pedal might as well be connected to my hopes and dreams - completely useless.

It just sits there maintaining 50mph no matter how much I stomp on it. Occasionally the RPMs will jump to 2000 and I get a brief taste of actual power before it drops back down like my expectations for this rig. The worst was climbing out of Death Valley at a blazing 15mph - I'm pretty sure I saw a tortoise give me a dirty look as it passed.

My kid thinks it might be the ECM, but honestly at this point I'm open to suggestions that don't involve selling a kidney. Anyone dealt with similar power loss and throttle issues on a Cummins 400? …more

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Engine Hard 3-4 hours 99 👍 0

1988 E350 Class C 460 EFI Won't Start - Advanced Fix

Got stuck with this 1988 E350 Class C 460 EFI that the previous owner left me — thing absolutely refuses to start. My 1988 E350 Class C with the 460 EFI decided to throw the ultimate tantrum right as we were heading out for a trip - just completely died and refuses to start.

Here's where it gets fun (and by fun, I mean expensive): I've got spark, I've got 40 psi fuel pressure at the rail, timing looks good, and I've already thrown money at fuel pumps, filters, plugs, wires, TFI module, distributor, and even the inertia switch. The thing will occasionally act like it wants to fire but never actually starts. The real kicker? Even when I give it a shot of ether, absolutely nothing happens - not even a sputter!

At this point I'm wondering if there's something more advanced going on that I'm missing. When you have spark, fuel pressure, and timing but even ether won't make it fire, what else could be the culprit on these 460 EFI engines? …more

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Engine Medium 2-4 hours 98 👍 0

Ford V10 RV Engine Codes P0171 P0174: Complete Diagnosis Guide

Our '04 Southwind with the Ford V10 started with minor hesitation last month but now it's turned into full P0171 and P0174 lean condition codes. Engine runs fine otherwise - no rough idle, no hesitation, fuel economy seems normal. Just these annoying codes that keep coming back.

I've heard the V10 has some common issues that cause these dual lean codes. Already checked the obvious vacuum lines and cleaned the MAF sensor, but wondering what the most likely suspects are when you get BOTH banks showing lean. Is there a systematic way to track this down, or should I just start throwing parts at it?

Really don't want to take it to a shop if this is something with known failure points on these engines. What would you guys check first? …more

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Engine Hard Professional diagnosis required 96 👍 0

2016 Winnebago Vista Engine Problems: Cost-Effective Replacement Options

My 2016 Winnebago Vista LX just died for the third time needing another engine replacement and we're supposed to leave for our cross-country trip next month. First engine failed at 55,000 miles, second at 20,000 miles. Ford dealer wants $31,000 for another new engine replacement.

With two failures already, I'm questioning if there's an underlying problem causing these repeated engine issues. Are there cost-effective alternatives to another expensive dealer replacement? Should I be looking at remanufactured engines or independent shops instead of going the same route that's failed twice? …more

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Engine Easy Informational 95 👍 0

Ford V10 P0171 Code: Is It Safe to Drive Your RV? Lean System Diagnosis & Repair Guide

Finally dealing with my Ford V10 throwing the P0171 lean code for the third time this season and I'm absolutely done with these guessing games. My Ford V10 with 60,500 miles threw this code during our recent trip from Maine to Virginia, and while there are absolutely no drivability issues - no rough idle, stalling, or poor performance - I'm terrified something catastrophic could happen on the road.

I've already cleaned the MAF sensor and had a local mechanic check for vacuum leaks and run a detailed diagnostic, which found no performance issues and cleared the Check Engine Light. The engine runs perfectly fine, but that check engine light has me spooked. What if I'm damaging the engine by driving it? Should I be monitoring for specific symptoms? I keep reading horror stories online about lean conditions causing engine failure.

I really don't want to get stranded somewhere or cause expensive damage, but I also don't want to cancel our upcoming trip to Florida if it's actually safe to drive. Has anyone dealt with this specific code on a Ford V10? What should I be watching for, and is it actually dangerous to drive with P0171 when the engine seems to be running normally? …more

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Engine Hard 4-8 hours diagnostic time 95 👍 0

Ford V10 Crate Engine Problems: Rough Idle & Power Loss

Opened my RV hood this morning and my Ford V10 crate engine is doing that rough idle and power loss thing again — only when it's above 85°F outside. My 2015 Bounder 35K with 27k miles needed a complete engine replacement, so I had a new Ford V10 crate engine installed. Now I'm dealing with really rough idle, loud engine noise, shaking during acceleration, and hardly any power.

The shop said they fixed a misfire by replacing a fuel injector, but the problems are still there. Now they're telling me they've done everything they can with the engine and that it must be a transmission issue causing all these symptoms. Does that sound right to you experienced folks? I'm just having trouble understanding how transmission problems would cause such rough idling and engine noise, but I honestly don't know enough to argue with them. …more

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Electrical Medium 2-3 hours 94 👍 0

1998 Bounder Ford 550 Cranks But Won't Start: Complete Diagnostic & Repair Guide

Standing at the dealership getting quoted $3,200 for a complete fuel system replacement on my 1998 Bounder Ford 550 that cranks but won't start, and this feels like total overkill. I can hear the fuel pump running when I turn the key, so that seems okay. Battery is good, connections are clean.

What are the most common causes when you have good cranking but no start? I need to know the best diagnostic steps to narrow this down quickly. …more

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