Results for "bad fuel"

Engine Medium 2-6 hours 468 👍 1

Onan 5500 Generator Problems: Complete Repair Guide 2024

Spent three hours testing my 2014 Hurricane's Onan 5500 gen getting 11.8 volts output when every manual says it should be 12+ volts! Here's the weird part - when I disconnect the remote harness, the generator fires right up and purrs like a kitten. But the second I plug that remote connection back in, boom - both the remote start light AND the generator start light come on, and then... nothing. Won't start at all.

The really bizarre symptom is this chattering from the fuel pump when the remote is connected. I can literally feel the fuel line jumping around when I put my hand on it. It's like the pump is having some kind of seizure or something!

I'm guessing this has to be some kind of electrical issue between the control board and the remote system, but I've never seen anything quite like this before. Anyone dealt with this specific combo of symptoms on an Onan 5500? Really hoping there's a known fix because pulling this thing out of the RV again would be a major pain! …more

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Engine Hard 4-6 hours 311 👍 0

Ford F53 7.5L RV Won't Start: Fuel Pump Relay Voltage Drop Fix

Woke up to my 1996 Ford F53 7.5L motorhome eating through my patience and wallet with this no-start issue that keeps coming back. It cranks strong but absolutely will not start, and I've been chasing this problem for weeks now. The engine ran fine for about 3-4 minutes one day, then just died and hasn't started since.

I've already done quite a bit of diagnostic work:
- Replaced PCM and distributor
- Fuel pump works when powered directly
- Battery is fully charged
- Checked fuses and relays
- PCM relay voltage drops from 12.2V to 9.3V with key on
- Fuel pump relay only shows 3.3V at pin 86 (should be 12V)
- Inertia switch tested at 1.7V at connector
- ANL 178 fusible link fluctuates between 0.3-0.6V

The engine will only start with starter fluid when the SPOUT is removed. I'm getting only 5.5V at the fuel pump connector.

Has anyone dealt with this specific issue on an F53 chassis? I really need to get this RV back on the road and I'm running out of ideas! …more

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Engine Medium 2-3 hours 138 👍 0

Onan 4000 Generator Surging: Step-by-Step Fix Guide (2024)

Despite my neighbor's Onan 4000 generator purring like a kitten, mine suddenly developed nasty surging issues yesterday — what's going wrong? It surges when cold, then settles down as it warms up. Under load it surges heavily until the appliance shuts off. Getting worse each day.

What are the main causes of generator surging? Need a step-by-step approach to diagnose and fix this - should I start with the carburetor, fuel system, or something else? …more

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Engine Medium 2-3 hours 126 👍 0

Onan 7000 Generator Low Voltage to Fuel Pump: Complete Repair Guide

Our Onan 7000 Marquis generator is hitting us with low voltage to the fuel pump for the third time this season and I'm done with guessing games. When I check the voltage at the fuel pump, I'm only getting 9V instead of 12V, and surprise surprise - it won't start. But here's the kicker - if I jump 12V directly to the pump, the thing fires right up and runs like a champ.

Obviously there's a voltage drop happening somewhere between the control board and the fuel pump, but I'm not sure where to start looking. Could be corroded connections, maybe the control board itself is going bad, or some wiring issue in the fuel pump circuit? Anyone dealt with this before and know the most common culprits? …more

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Engine Medium 30-60 minutes 112 👍 0

Onan 4KY Generator Starts Then Dies: Oil Pressure Sensor Troubleshooting Guide

About to sound like a total newbie here, but why does my 2018 Winnebago Spirit's Onan 4KY-26100R generator start perfectly then instantly die when I release the start switch? I suspect it's the oil pressure sensor based on what I've read, but want to confirm this diagnosis before ordering parts. Oil level appears normal. I've tried locating the oil sensor near the oil filler tube on the crankcase, but it's difficult to see or reach. Is there a way to test if the oil pressure sensor is actually the problem? Can I bypass it temporarily to verify that's the issue? …more

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Ac Refrigeration Medium 2-3 hours for fridge 106 👍 0

1986 Fleetwood Jamboree Fridge Repair Guide + Ford 460 Engine Upgrade

Got my third fridge failure this season in my '86 Fleetwood Jamboree with the Ford 460 carbureted engine and I'm done guessing what's wrong. Two main issues:

The fridge isn't working at all. What should I check first for troubleshooting?

Also considering an EFI conversion on the 460 for better fuel economy since gas mileage is brutal. Is this upgrade cost-effective or should I stick with maintaining the carburetor system? …more

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Engine Medium 1-2 hours 106 👍 0

Ford F53 Motorhome Won't Start: Complete Troubleshooting Guide

Opened up my Allegro Bay 46 ft motorhome on a Ford F53 chassis after winter storage and now it won't turn over, dashboard lights are going crazy, AND the engine makes weird clicking sounds. When I turn the key, the warning lights cycle normally (except the check engine light, which does not turn on), and the engine turns over fine when I hit the starter. However, beyond that cranking action, absolutely nothing happens - no fuel delivery, no spark.

What I really need is a systematic approach to troubleshooting this F53 no-start condition. I want to make sure I check the most likely culprits first rather than randomly replacing parts. What are the common failure points on these F53 engines that cause this exact symptom pattern where it cranks perfectly but won't fire up at all? …more

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Engine Medium 1 hour 105 👍 0

Ford 7.3 Godzilla Starter Relay Location: Fix Stuck Starter Issues in

Finally found the starter relay for my 2022 RV's Ford 7.3 Godzilla engine that keeps staying engaged after startup — but will replacing it actually solve this? This has occurred multiple times and appears to be triggering crankshaft sensor errors, putting the vehicle into limp mode.

Diagnostics point to a faulty starter relay or incomplete grounding in the circuit. Need to locate the starter relay in the Ford 7.3 Godzilla to test and replace if necessary. Where exactly is this relay positioned, and what are the typical failure patterns for this specific issue on the 2022 model year? …more

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Propane Medium 45 minutes 102 👍 0

Airxcel Furnace Not Working When Thermostat Switched to Heat

Looked everywhere for answers but my 2019 Forest River with an Airxcel furnace won't kick on when I switch the thermostat to heat mode. When I turn the thermostat to heat mode and adjust the temperature setting, absolutely nothing happens - no sounds, no fan activation, no ignition attempts, nothing at all. The unit was working perfectly fine last month during our camping trip, but now it's completely dead when I try to activate it through the thermostat.

I've tried adjusting the temperature settings both higher and lower, checked that the thermostat is properly set to heat mode rather than cool or off, and even tried turning the system off and back on again. The thermostat display appears to be functioning normally and shows the temperature settings I'm selecting, but the furnace itself shows no signs of life whatsoever. I'm wondering if this could be an electrical issue, a propane supply problem, or something with the connections between the thermostat and the furnace unit itself. …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 1-2 hours 97 👍 0

Ford 460 RV Fuel Pump No Power: Complete Electrical Troubleshooting Guide

Got a Ford 460 RV where the fuel pump went completely dead with zero electrical power reaching it. Two weeks into RV ownership and I'm already that guy asking "why won't my rig start?" 🤦‍♂️

My 1994 National Dolphin with Ford 460 ran like a champ to the campground, but after 4 days of living the good life, it decided to throw a tantrum when it was time to leave. Engine turns over fine but won't fire up - classic "I don't wanna go home" syndrome. Throws some starting fluid at it and it runs briefly, so I'm thinking fuel delivery issue.

Checked the fuel pump and sure enough, zero power getting to it. Being the resourceful newbie I am, I ran a jumper wire directly to the pump and made it home just fine. But I know this isn't exactly the "proper" long-term solution my wife keeps reminding me about. Where should I start troubleshooting the electrical issue? Is there some safety switch I don't know about that might have tripped during our stay? …more

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Engine Easy N/A 96 👍 0

RV Water Crossing: How to Avoid Engine Damage and Recovery Steps

Woke up to my Winnebago Ekko surrounded by floodwater above the wheel hubs, the engine is completely dead, AND there's moisture creeping into places it definitely shouldn't be. While I haven't noticed any unusual noises or driving behavior, I want to be proactive about potential water exposure damage.

I've checked that the oil isn't milky and brake fluid looks normal. However, I'm concerned about potential impacts on hubs, bearing grease, brake fluid, differential fluid, and transmission fluid from this water exposure.

Has anyone else with an Ekko experienced similar flooding and have recommendations for post-water exposure inspection? Am I being overly cautious about checking various components? I'm hoping to get some expert advice on what specific things I should examine to ensure no long-term damage occurred. …more

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Engine Medium 1-2 hours 96 👍 0

RV Engine No Spark? Complete Troubleshooting Guide to Fix Starting Issues

Wondering which ignition component to grab from this auto parts store aisle when my RV engine has zero spark and won't start. engine turns over fine but just won't fire up. I'm pretty sure it's a no-spark situation since I can't get any ignition happening. I've already tried replacing the coil twice, the distributor, and the ignition switch, and I still have 10-11 volts going to the coil but no spark.

Been reading that this could be a few different things - maybe the crank sensor went bad, or possibly the ignition module, or even the coil itself? I'm decent with basic troubleshooting but honestly don't know the best way to test these components systematically. Don't want to just start throwing parts at it and hope something works. What's the smart approach to figure out which component is actually causing the no-spark issue? …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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