r/MechanicAdvice • • Jul 26 '25

Mechanic sent me this video— what am I looking at please?

13.7k Upvotes

2016 chevy Malibu 34,000 miles 4cyl 1.5L

Forgive me, I know very little about how cars work, but want to learn.

Had my car in a shop for a week now, as I had an engine misfire. The shop said I have low compression in cylinders 1, and informed me I would need a $3500 engine rebuild to replace the valve on cyl 1.

Today they told me there is low compression in cyl 2 as well, and it is likely from carbon buildup, and I probably need the whole top/head(?) replaced. They also said to prevent it from occurring again in the future, I would need to have an induction cleaning every other oil change.

They also sent me this video, of the oil, but I’m really not sure what it shows. I did have my oil changed there about 1,000 miles ago. What should the oil look like after 1k miles, and what is wrong with mine/ what does my oil show? Thanks


r/MechanicAdvice • • Aug 10 '25

Solved What fell off the underside of my car and is it safe to drive to a car shop?

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8.9k Upvotes

Drove into my garage the other day and discovered these bits trailing a bit behind my car after I parked. My car has been a bit loud for the past few months but it wasn’t due for a service yet so I tried to wait it out…apparently that was not the move. :’) I made a service appointment for tomorrow but I was wondering if these bits indicate that I shouldn’t drive the car to the shop and instead get it towed? I know very little about these things so any help would be appreciated!


r/MechanicAdvice • • Oct 10 '25

At a mechanics shop saw this at the entrance is this normal?

8.4k Upvotes

r/MechanicAdvice • • Aug 04 '25

Stupid question, but what is this stick pulled out in this car I bought? I can't put it back (2002 Toyota Tacoma)

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6.9k Upvotes

r/MechanicAdvice • • Jul 02 '26 Popcorn Bravo Mindblown

Car is leaking fast, smelly liquid after hitting a speed bump

6.4k Upvotes

I went over a speed bump in my 2005 Ford Fusion, something snagged and now it’s leaking smelly yellow fluid, fast. Obviously, I am going to get it towed to my mechanic. But any idea what I’ve done? And how did this happen from a little bump (it wasn’t a full bottom out, and I wasn’t going above 5mph, I was actually trying to park)?

Edit: Update. It was in fact, the radiator. I asked the mechanic how it happened with what (I stand by this) was not a very hard bump. He said it was all just made of plastic, and was likely old brittle. Thanks for the advice and making me laugh, what a way to start the month.


r/MechanicAdvice • • 22d ago Bravo Heartwarming

Car stuck on failed scissor lift- UPDATE!

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6.2k Upvotes

Hello again everyone!

I thought I would post an update on my crazy situation which was posted here yesterday…

Before I get in to the details, I would just like to say a huge thank you to all the people who commented yesterday & today with helpful comments and suggestions.

To all those who bantered me, I would also like to thank you. Life is too serious sometimes and some of those comments really cheered me up, even though they were at my expense at the messed up situation I found myself in!

It was a fairly sleepless night checking the camera to see if the car was still upright at regular intervals.

The ramp does/did have a manual release valve but due to the precarious way it sat on the ramp & the fact that the lift has to raise before going down as a safety mechanism, I
was sweating bullets before I plucked the courage to press it.

Needless to say, it was ratchet strapped to the lift and safety ropes to the structure of the building, it nearly went over on initial pull and there deemed it too risky to try and release it.

Some sketchy/careful lifting with a forklift/timber blocks/protection later (3 hours to be precise). SOMEHOW managed to get it back to the ground without any initial damage.

No word of a lie, I played Monty Pythons - Always Look On The Bright Side Of Life and thought of the potential things that could go wrong on finally lifting the entire cars weight up on the forklift. It may now be my favourite song of all time as a result.

I did try the local fire service but as the UK is experiencing some extreme rain/wind at the moment, they weren’t able to come down until the middle of next week which is totally understandable under the circumstances - they did laugh however 😂

Again, huge thanks to all that commented, a few things I have noticed as someone new to Reddit and in possibly the strangest situation I have ever found myself in, namely;

  1. Most people in this world are good, well meaning people.

  2. There is always the odd knobhead no matter the situation.

  3. Meme’s at your expense are still funny.

  4. Just because a lift is rated at 3000kg, it really doesn’t mean a lot.

  5. Do NOT buy anything from Strongman Tools Ltd. This will be assed by an independent surveyor and actioned accordingly. They are exhibiting at The Classic Car show at the NEC in Birmingham next month and I’ll be stopping by.

  6. For all the abuse your president gets, Americans are okay in my book - our government is also pretty messed up if it makes you feel any better!

Thanks again everyone!

Much love!


r/MechanicAdvice • • May 08 '26 Popcorn Bravo

Mechanic said my break pads only have 2mm left

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5.9k Upvotes

I took my C300 to a mechanic for an oil change and got a $4k list of repairs and maintenance items. The mechanic also said all the brake pads were at the end of their life, especially the rear ones, which supposedly only had 2 mm left. Replacing all the pads would cost $1,600.

So I bought the tools and new pads to do it myself, but when I removed them, I found that the pads are still pretty thick. Am I missing something?


r/MechanicAdvice • • Aug 11 '26

Chipped rotor

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5.8k Upvotes

Will that chip in my rotor mess my caliper up when I brake after I change the wheel? EMERGENCY

2015 GTI


r/MechanicAdvice • • May 27 '25

Mechanic sent me this video saying my engine is done. What am I looking at?

5.5k Upvotes

r/MechanicAdvice • • Oct 26 '25

My seat filled up like a balloon?

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5.3k Upvotes

I was going for a coffee with my brother and we were away for about one hour, when we came back my seat was filled up with a lot of gas. It was really really plump and bulging. After about three hours of waiting for a mechanic that didn’t come we went back to the car to check if it got fuller and to our surprise saw that it was back to near normal. When I set down back in the seat we could hear the rest of the air hiss while slowly leaving the seat. It’s a BMW from 2005. I do have heated seats and airbags. Anyone any idea what it was and if it’s still dangerous?


r/MechanicAdvice • • Jun 08 '25

Saw these on a truck. What are these plastic things across 2 lug nuts?

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5.2k Upvotes

r/MechanicAdvice • • Jun 12 '25

Someone crashed into the street light and it’s in our yard. Can we identify their car with this?

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5.1k Upvotes

Somebody backed up into the street light and the light fell into our yard. I have no idea what this thing is and if it can help. Thanks


r/MechanicAdvice • • Apr 20 '26

Tech left a note on my oil filter.

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4.8k Upvotes

While giving the underside of my truck a well needed wash, I found a note that one of the techs left on my oil filter.

“There’s a personal price to pay for wilful blindness”

Could this actually be hinting towards something, or simply just a fun little note they left behind?

Edit: Since so many are commenting on how filthy the truck is: this condition is unavoidable due to my line of work- I wash the truck at every opportunity I get, *especially* before taking it for service. So I don’t think it has anything to do with this.


r/MechanicAdvice • • Oct 14 '26

My brother dipped my car key and candle wax, and I started my car without noticing

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4.7k Upvotes

I have a 2015 Chevy Malibu and my brother dipped my car key into a candle and I didn’t really notice till I had already put my key in the car. I took it out after and cleaned the rest of the wax out and went in my ignition with a Q-tip and a bobby pin…(sorry) now it’s kind of just a greasy residue and I’m kind of stranded in Indiana visiting my mom and I have a 2 Hour Dr. home tomorrow. I’m 17 years old so it would be a lot of trouble for me to call a mechanic to look at literally nothing. Do you think I’m safe to drive home?
Or anywhere actually


r/MechanicAdvice • • May 12 '25

Honda Dealership killed my Odyssey

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4.5k Upvotes

I have a family member who works in sales at a Honda dealership. They got work done for my 05' Honda Odessey, Initially only the battery and spark plugs were changed. I needed an intake manifold also. This one fix was quoted at 1500. He ssid he found a cheaper way to fix it. Still $900. My car was towed to the dealership, stayed a week and a half and was towed back to me. I drove about 30 miles. Stopping twice. I went to start the car. I heard a loyd POP! Then the car began smoking and eventually caught fire. The car is a total loss, I only hsve liability since its so old so its definitely not covered under my insurance. It looks like the battery was the probbut my whole engine literally exploded. Im not sure if this work was done "off record" but im sure it was done AT the honda dealership. I left my keys with my family member, a Honda Employee and it was in their possession the whole time. This happened less than 24 hours after getting the vehicle back. Do they have insurance to cover me with this? Anyone ever deal with something similar?


r/MechanicAdvice • • 24d ago

Car stuck on failed scissor lift - HELP!

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4.5k Upvotes

I really wish this was me posting an AI generated problem for you to solve - unfortunately this is as real and strange as it gets!

The car was put on a scissor lift for some annual tinkering and supported using a combination of rubber/timber blocks on the recognised jacking points…

However, the lift has basically decided to crush a wire (something which the user does not touch) and somehow decided to lift out of the steel track and do its own thing.

The manufacturer has basically said ‘you’re on your own, it’s user error’ and left me to it. I am adamant it is a manufacturer error and will be investigating this once this predicament has resolved itself one way or the other.

I am scratching my head on how to resolve this, hopefully with the car in tact/minor damage but you can judge that for yourselves!

Maybe a forklift to jack up one side but I still have no idea on how to resolve this.

Any advice would be greatly appreciated, I am however waiting for this to be memed at my expense!


r/MechanicAdvice • • Apr 11 '25

Solved Should I be worried after overloading minivan?

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4.3k Upvotes

Loaded bricks, soil, and gravel into my minivan, but didn't realize the weight.

Capacity is roughly 1400 lb on the 2024 Sienna. Probably exceeded that by about 400 lb. Bulk of the load in the trunk.

Drove about 10 mi. Heard a couple squeeks and creaks going over bumps, probably from the wheels briefly rubbing the plastic in the wheel well. After unloading, the ride hight looks normal, but I can't tell.

Do you think the coil springs or other parts were probably damaged?


r/MechanicAdvice • • Sep 04 '25

Gel beads in the gas tank??

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4.2k Upvotes

Happened to my sisters car, can’t find anything online. Is someone messing with her? Is this a fixable problem?


r/MechanicAdvice • • Jul 24 '25

Car broke down on a roadtrip. 100 degrees out and engine started smoking/steaming. Dipstick melted. Am I done for?

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4.1k Upvotes

Hey everyone. 2 hours into a roadtrip back to home and my car just stopped. Check engine light started blinking.

Got out and the engine was smoking. Tried to check oil and dipstick is completely melted. I got an oil change 3 weeks ago.

I’m hoping it’s just an oil leak and it really started leaking, but I fear it’s something worse. Any thoughts? I thought most of the mechanical parts of the car were good. I changed trans fluid 3 weeks ago as well.

I didn’t have the AC on with windows down and I was blasting music from my subs. Dunno if that’s affects anything.

I have a tow truck on the way. Any thoughts or am I totaled?

Honda Civic 2008 coupe


r/MechanicAdvice • • Jun 12 '25

Why is my car so loud? [undercarriage]

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4.0k Upvotes

2013 Scion tC. Photo taken today as I was getting an oil change and on the lift. TLDR bought it and he said some “exhaust work” was done. (kid) It’s annoyingly loud and extremely loud in a cold crank. It appears to me the catalytic converter is gone, but he said it still has a resonator in it. What can I do / have done to it to make it not so loud when climbing rpm’s or on start up?


r/MechanicAdvice • • Apr 17 '25

I majorly messed up tightening my spark plugs

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4.0k Upvotes

Recently my 2011 ford f-150 3.5l echoed started misfiring on the 6th cylinder. Today I decided I would change the plugs before taking it to mechanic to see if that might remedy the issue. Went to O Reilly got all of the plugs extensions and when getting a torque wrench they decided to loan me a ft/lb torque wrench. On the video I saw they mentioned torquing to 133 in/lbs I only realized after attempting to torque to 133ft/lbs that I messed up majorly. When trying to torque that high the spark plug threads gave out or I speared the metal part from the ceramic or something of the sort because now when attempting to tighten or loosen said plug there is zero resistance. I attempted to plug it out with some needle nose and it’s definitely in there but feels lose. When attempting to drive it drove “alright” for maybe 10 minutes before I started getting hard shaking in idle and lots of shaking when accelerating especially under load. If anybody has experienced anything like this in the past I would really appreciate advice. Engine also makes a tick noise now.


r/MechanicAdvice • • Apr 29 '25

I'm confused

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3.9k Upvotes

I got this on my car while I was parked in my complex in a spot that I've seen a bunch of people parking because I had a friend over and there were no spots around so I figured I could park in this spot. I came out to my car to move it back to my spot and had this weird post it on the hood of my car but firstly if someone had got into my engine block it would have gone off and secondly it is just messed up enough that the mechanism can't be pulled without actively popping the hood. I showed it to my wife and she is concerned and wants to know what it is. I'm just confused why someone even left it since I was fully out of the way in a spot a bunch of people park in. I guess I'll never park there again just didn't want my friends car getting towed.


r/MechanicAdvice • • Mar 20 '26

Is this rude? Or is this cool...

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3.9k Upvotes

Sorry if this breaks the t*re rule, I'm just focusing on the bribe part


r/MechanicAdvice • • May 24 '25

Did I use them wrong or did I just buy crappy ones?

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3.9k Upvotes

They are supposedly 3-ton jack stands and I have a small car (Nissan Versa). What went wrong?

Context: I raised the right side of the car with a floor jack (I placed it on the lip, close to the front wheel, where the notch is) and placed the jack stand under a wider piece of solid steel. I started lifting the left side, but then I heard a noise so I lowered it before putting the second jack stand. I proceedeed to lower the right side and when I took the jack stand out it was broken like that.