Results for "coolant contamination"

Called three dealerships about warranty coverage for oil contamination in my 1999 Ford F53 V10's coolant system — before I tackle this head gasket nightmare myself. The unit overheated after the oil level dropped significantly, though it still starts and runs without throwing any codes.

Based on the symptoms, I suspect a blown head gasket, but I want to perform proper diagnostic testing before committing to a major repair. What specific diagnostic procedures should I run to confirm whether this is actually a head gasket failure versus other potential causes like a cracked head or block issue?

Looking for a systematic approach to pinpoint the exact problem before I start tearing into this engine. …more

During my 2 AM breakdown, my Ford E450's Godzilla engine started hemorrhaging coolant from the water pump timing cover — need this fixed before our sunrise departure. My E450 Godzilla decided to turn into more of a steam dragon than the beast it's supposed to be. After getting towed to a Ford dealer (because apparently not everyone wants to work on these motorhome monsters), they're telling me the timing cover surface where the water pump mounts looks "normal."

I'm staring at what looks like the surface of Mars - all pitted and grooved where the water pump was sitting. The dealer insists this is just typical wear, but my gut says something that caused a catastrophic overheat probably didn't leave the mating surface in "acceptable" condition. How do I know if this timing cover surface actually needs to be machined or replaced, or if I'm just being paranoid after my expensive towing adventure? …more

Nobody told me my 1997 Ford Rexhall Class A would keep overheating like this, and now I'm terrified of engine damage. I've already flushed the radiator multiple times and added fresh coolant, but the overheating problem persists.

I'm hesitant to start taking things apart without knowing what I'm looking for, and I'm concerned about making the problem worse. What are the most likely culprits I should check next? I've heard it could be the thermostat or water pump, but I want to make sure I'm checking everything systematically before spending money on parts that might not fix the issue. …more

Radiator hose has one of those quick-disconnect fittings and I cannot get it to release no matter what I try. Squeezed the tabs, twisted, pulled, sprayed penetrating oil — nothing. Hose needs to come off for a coolant flush and I'm about to just cut the thing off. …more

Spent an hour inspecting this Craigslist Onan 4000 from Villa Rica and it's doing something bizarre — everything looks perfect but won't even attempt to turn over. I'm seeing prices ranging from $500 to $3000+ and want to understand what's a fair price. The original link was https://atlanta.craigslist.org/wat/rvs/d/villa-rica-onan-cummins-generator/7895531063.html.

What should I be looking for when I go check one out? Don't want to buy someone else's headache but also don't want to pass on a good deal because I'm being too picky. Any red flags I should watch out for? …more

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

Got a cracked Onan 7000 block cover and I'm standing in the hardware store staring at welding rods versus JB Weld with zero clue which fix actually works. During the process of resealing the oil pressure solenoid, I made the rookie mistake of over-tightening the component, which resulted in a hairline crack developing in the block cover. The crack appears to be relatively small but is definitely present and concerning.

I'm exploring my repair options and trying to determine the best course of action without having to replace the entire block cover right now. I've heard that aluminum welding might be possible for this type of repair, but I'm not sure how successful that approach typically is on generator block covers. I'm also wondering if JB Weld could serve as a viable temporary solution to get me through this camping season.

What are the realistic expectations for both welding and JB Weld repairs on an Onan 7000 block cover hairline crack? I'd particularly like to know about the longevity and reliability of each approach, as well as any specific considerations for this type of aluminum repair work. …more

Planning to buy my first diesel pusher and I'm completely clueless whether 142,187 miles on this 2005 Cummins ISM 500HP is considered high mileage. The coach is equipped with a Cummins ISM 500 horsepower engine paired with an Allison MH 4000 6-speed transmission. While I've done some research on these powertrains, I'm getting mixed opinions about what constitutes "high mileage" for this particular combination.

Some people are telling me that anything over 100K miles is getting into risky territory, while others say these commercial-grade engines are just getting broken in at that point. I want to make sure I'm not walking into a money pit, but I also don't want to pass up a good coach if the mileage number is scaring me unnecessarily.

What's the realistic lifespan expectation for the Cummins ISM 500HP and Allison MH4000 combination? Should 142K miles be a red flag that makes me walk away, or is this actually considered moderate mileage for these heavy-duty components? I'm trying to determine if I should focus more on the maintenance history and overall condition rather than getting hung up on the odometer reading. …more

I turned off my RV's cooling system and grabbed my wrench — ready to install a ball valve on my 2008 Fleetwood Terra's heater line but need safety confirmation first. I've been battling what I suspect is a faulty electric heater valve that may not be closing completely when I switch to A/C mode.

The electric valve is expensive to replace and located in an incredibly awkward spot that's driving me crazy to access. I've tried everything - heat detectors, feeling around the lines, you name it - but I still can't definitively tell if it's actually sealing off hot coolant flow when the A/C is running.

Here's my question: Can I safely install a simple manual ball valve in the heater line before the existing electric valve? I'm hoping this would let me manually shut off coolant flow to the heater core when using A/C, essentially doing the job the electric valve should be doing. Will this cause any problems with the cooling system or damage anything? I just need to know if this is a safe solution before I start cutting into lines. …more

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

Already embarrassed to ask this, but my 2014 Thor Challenger's V10 threw a rod in Florida - is replacing it as wallet-crushing as I think? Because apparently my RV has a sense of humor and perfect timing! 🙄

Now I'm staring down the barrel of an engine replacement and trying not to have my own mechanical failure when I see the potential costs. I've heard Jasper engines mentioned, but I'm honestly clueless about what I should expect to pay for a complete engine replacement on this beast.

Anyone been through this wallet-emptying adventure before? What's the realistic price range I'm looking at, and are there any engine brands or shops I should specifically consider (or run screaming from)? …more