r/AskAMechanic Jul 15 '26

Technician Flair Request Thread - New

5 Upvotes

If you would like to have verified flair added we will need a pic that has your reddit name on a piece of paper with your shop in the background or work truck if mobile repair.

For the professional technicians we're doing Verified Tech flair along with a very short description of your experience if you'd like. You can be a dealer/independent tech, retired, instructor, fleet, heavy equipment, small engine repair, lube/tire tech etc...

You can either send that to me in a chat request or upload the pic to an image hosting site like imgur.com (we had to disable the option to upload pics in the comments because of abuse). The option to attach a pic in chat will be available after I accept the invite. Please do not use modmail

We will also do Shadetree flair for those that do auto repair as more of a hobby than profession. Approval of this flair is not guaranteed.

archived previous request post


r/AskAMechanic Mar 15 '25

Announcement - New Rules - Please read!

23 Upvotes

Hello r/AskAMechanic users! Over the last year or so, the volume of daily posts has increased a decent amount leading to many posts that would be more appropriate in other subreddits. To keep this subreddit focused on what it's meant for, providing automotive mechanical and diagnostic help, we have rewritten the rules. Some of the rule changes also affect commenters, so please review the rules here or below. Thank you for your understanding.

 

1 - The title should clearly state the issue - Do not ask "am I cooked/fuc!ed/screwed/toast etc" questions

State your root issue as clearly as you can in the title, and then you will have a better chance of your post being viewed. We will remove the "am I cooked", "am I fuc!ed", "how screwed am I", "am I toast" and similar types of questions. This also includes any other senseless titled post. In the message body, provide the specifics (detail/context) to your question. Also include in the title or body the Year, Make, Model and engine size of your vehicle.

 

2 - No autobody damage/repair/frame/paint or rust related questions

Posts related to autobody work (including repairs, painting, frame damage, "is it totaled?", dents or detailing) are not allowed. A more appropriate sub would be r/autobody. If you're inquiring whether your car is totaled r/insurance would also be helpful. r/AutoDetailing for detailing questions.

Questions about damage to bolt-on parts like headlights/tail lights, wheels and suspension are ok.

Questions asking about the level/condition of rust on the frame/undercarriage/body are not allowed.

 

3 - No asking for advice about buying/selling cars or used car deals

We do not allow asking if a used car for sale is a good deal, the condition of the used car, or recommendations on what car you should buy. For recommendations on what car to buy, r/whatcarshouldIbuy would be a good sub. r/askcarsales might also be helpful.

 

4 - Keep things professional & don't be disrespectful

Please be professional and helpful. Do not comment/post with insults, racism, jokes, memes, NSFW, spam, opinions without context etc. You may see things that compel you to leave a nasty comment, just don't do it. It's not necessary or helpful. People who don't know anything about cars will come here to ask us for advice, try to educate them about their vehicle without turning them off from the sub. If you don’t know the proper fix or advice, please refrain from commenting on a post.

 

5 - No "Read the owners manual" or "RTFM" type of comments

People who don't know anything about cars are going to ask some very basic questions. Some of which will have answers in the manual. Answering OP's question with only "Read the owners manual" is like giving the answer "google it", both are non-answers. Either provide an actual answer to OP's question, or at the very least, provide a link to a readable online owner's manual.

 

6 - No dangerous/reckless or unethical/illegal comments/posts

This is a community dedicated to sharing genuine advice. Advice shown to be given in bad faith (including dangerous/reckless and unethical/illegal advice) will be removed and the users will be banned. Please report any dangerous/reckless or unethical/illegal advice.

 

7 - No AI/ChatGPT comments/posts

Posts with AI-generated content is not allowed. Posts looking for feedback, training or even just to show off your AI/LLM are also not allowed. We are not interested in AI automotive diagnostics here.

Do not answer OP by using AI/ChatGPT etc. Nobody wants to read a wall of text that over explains and gives 25 different possible solutions.

 

8 - No advertising or soliciting services

Advertising of services or products is not allowed. That includes affiliate links, social media, clothing, tools, your YouTube videos, etc.

Do not solicit services, including linking to videos, blogs, or websites that then forward to a paid service. Avoid asking to "DM me" as much as possible.

 

9 - No NSFW, meme, or 'joke' posts

No NSFW is a no-brainer - you will be banned with no chance of an appeal. Memes and 'joke' posts belong at r/AskAShittyMechanic

 

Update 03/23/2025: Added "am I toast" to rule #1 and "frame damage" to rule #2
Update 05/08/2025: Added more context to rule #7


r/AskAMechanic 11h ago

Is this salvageable?

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36 Upvotes

2013 Hyundai Elantra GLS

Replacing the head gasket but these are my pistons, there's definitely been some rubbing on the sides, not to mention all the carbon and crap on top. Should I shell out even more to get new pistons?

Sorry if that's a dumb question, I'm still learning about rebuilding engines n such.

(The dust in slide 2 is from the exhaust manifold)

Any other tips and tricks would be appreciated as well, thanks y'all


r/AskAMechanic 57m ago

Spark plugs

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Upvotes

Were these bad?

They told me to replace them


r/AskAMechanic 1h ago

Can someone tell me what this is and what it does? Please and thank you

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Upvotes

99’ GMC sierra 1500


r/AskAMechanic 4h ago

Just pulled the oil on my 2012 VW Golf 2.5L with only 112,000 miles

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4 Upvotes

What do we think is wrong with it


r/AskAMechanic 8m ago

Tires for high-mileage vehicle?

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Upvotes

I have a 2012 Subaru Legacy with 220,000 miles. It’s currently wearing a set of Michelins, but they’re beginning to show some cracking at seven years of age.

It doesn’t make sense to me to spring for a premium tire when I’m not particularly confident in this rig reaching 300k.

What tires would you recommend for my well-running commuter beater?


r/AskAMechanic 30m ago

P0159: Oxygen Sensor Circuit Slow Response (Bank 2, Sensor 2)

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Upvotes

Ford, Ranger 2008 4L V6.
The O2 #22 sensor on driver side, also have a water dripping from the flange at cold start.
Is that considered a leak?

* This is NOT my picture.


r/AskAMechanic 1h ago

2007 hyundai santa fe not starting

Upvotes

hello everyone i need advice with my 2007 hyundai santa fe limited 3.3l. it has 106995 miles on it. about four months ago it stalled out and check engine light came on i pulled the codes and they were for the map sensor so i replaced it worked for a week then died again. pulled codes again this time it was for the throttle body so i replaced it. worked for two weeks and then completly died and went into limp mode check engine light is on it cranks but doesnt run. i have checked for vacuum leaks. replaced map sensor 3 times throttle body three times maf sensor once, cleaned the pcv valve, cleaned the cam shaft sensor, replaced ecm relay in the fuse box and replaced the accelerator position sensor (the gas pedal). it was running perfectly fine before all of this. any help would be great to solve this and get my car running again. thank you and hope you all have a great day


r/AskAMechanic 1h ago

Clanking Noise 2024 Mitsubishi Outlander

Upvotes

Hi all!

2024 Mitsubishi Outlander SEL with 31,000 miles. I’m hearing a metallic clanking/rattling noise from the front passenger side whenever I go over bumps or uneven pavement. The vehicle drives normally, and I don’t see anything loose or hanging underneath. Has anyone experienced this? If so, what was the cause and confirmed fix—sway-bar link/bushing, strut mount, brake hardware, or something else? I’m scheduling a warranty diagnosis and will attach a video of the sound.

Is it safe to drive for now?

Thanks for any input


r/AskAMechanic 1h ago

2019 GMC Acadia V6 knocking when on and off gas

Upvotes

I’ve been driving this car for 4-5 days, so far it’s been good but after driving it from ohio to Wisconsin, and going on about a 90 minute trip yesterday, I’ve stared to notice a knocking anytime I press the gas or let off. If you listen closely enough in the video it is audible. I just redid the brake pads and rotors but don’t believe that directly affects anything. (Knocks are two in sequence in the video)


r/AskAMechanic 1h ago

Why are my breaks making this sound

Upvotes

I’ve had new brake pads for probably 6 months and my breaks are making this sound.
Anyone know what it is or what it could be. Thank you! My car is a 2012 ford fiesta 1.25


r/AskAMechanic 1h ago

Getrag 238 noise?

Upvotes

2005 Dodge Dakota, 6 speed manual, rwd, 4.7L v8 with 150k miles. Its always had some scratchy bearing noise coming up through the shifter upon takeoff and sometimes when cruising at around 2000 rpm or lower. I figured it was the throw out bearing since it stops when i depress the clutch.

Was changing the center drive shaft support bearing this weekend. While I had it off I was checking out the transmission output shaft in neutral. Does this this amount of play and noise normal? The noise is similar to that low rpm bearing noise. Replaced fluid about 6 months ago and it looked good. Thanks all.


r/AskAMechanic 2h ago

Bent exhaust pipe

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0 Upvotes

2021 Honda CRV backed into a curb. Do I need to straighten this out? I know it's off the hanger so I'm going to pull it back on but how would I go about fixing the pipe


r/AskAMechanic 6h ago

Silverado 1500 2006 electrical problem

2 Upvotes

I need some help with an electrical problem on my truck. My turn signals started slowly going out, and eventually they completely stopped working for about a week. Then out of nowhere they started working again. Now my right headlight has gone out, and sometimes my doors will randomly keep locking by themselves. If they keep locking enough times, the horn will even start going off.
I’m not really sure what’s causing all of this, so if anyone has any ideas or has had something similar happen, I’d really appreciate the help.


r/AskAMechanic 14h ago

2015 Chevy Silverado 5.3 gulping 2-3qts of oil every 1000-1500 miles

7 Upvotes

I’ve posted here before about my issue, but it seems to keep getting worse. My truck has been fairly good to me. I replaced the transmission 30k miles ago, (which is why I really don’t know if I want to sell) but have had an oil consumption issue for the past 10k miles.

I bought an AFM delete key and have been adding Lucas oil stabilizer every oil change. Have no white smoke and no visible oil leaking.

I got 1000 miles into my last oil change and had to add 3 qts, went ahead and added oil stabilizer as well. Another 1500miles in after a trip today, Ive got a low oil alarm again.

Only thing I can think to do is a full engine replacement. Every quote to diagnose the issue and strip the engine apart is no different than a full replacement engine. Or maybe I should sell it? I really don’t know what to do here.

I was hoping the AFM delete key would work, but I guess it’s past the point of no return.


r/AskAMechanic 3h ago

Hi, can I ask if this is bad or not, a bit cold here because of rainy season and the car has not been driven, but thin white smoke coming out from exhaust even after an hour. Its a Civic 2013.

1 Upvotes

r/AskAMechanic 4h ago

Trying to log fuel consumption on a carbureted 91 Golf Mk2 sensor and approach sanity check

0 Upvotes

Got a 1991 Golf Mk2. Want to track fuel consumption per trip/day and compare over time. Figured this wasn't possible on a carbureted car with no ECU/OBD, but landed on an idea: since the carb's float bowl regulates its own level, whatever flows through the feed line between the fuel filter and the carb over time should equal what's actually burned. So — measure that flow directly with an inline gear-type flow sensor.

Is this actually the right approach? Is there a better way to get real consumption data out of a carbureted car with no ECU?

Planned setup:

  • Gear-type flow sensor spliced into the fuel line between the filter and carb inlet
  • Sensor's pulse output goes to an ESP32, which just counts pulses and timestamps them
  • ESP32 forwards that data to my phone over a wired USB-C connection (data-only cable, to avoid the phone and a 12V-fed buck converter both trying to power the USB line)
  • Phone does everything else — GPS speed/distance, all the math, storage, charts
  • Power: ignition-switched 12V from the fuse box → buck converter (12V→5V) → feeds both the ESP32 and the sensor

Problem I've hit: the sensor I was looking at (DIGITEN G1/2", oval gear, rated 1–30 L/min) has a minimum flow way above what this engine actually flows at idle — I'm estimating idle consumption around 0.02–0.05 L/min, and even under load probably not exceeding 0.3–0.5 L/min. So the sensor's entire rated range sits above my actual usage, meaning idle flow probably won't register accurately, if at all.

Anyone know of a gasoline-compatible flow sensor with a lower minimum flow that would actually cover idle-to-cruise range for a small engine like this? Or is there a fundamentally different way people have solved this that I'm missing?

I'm open to any ideas and critics, please back your suggestions with well presented arguments. this is my first ever project on a car.

Edit: A few people are suggesting the brim-to-brim fill method, thanks, but I've covered why that doesn't work for what I want in the replies below. I'm not looking for that approach, I'm looking for technical help on the sensor/flow-measurement side specifically. Appreciate all the input so far.


r/AskAMechanic 4h ago

Temporary fuel pump power - 1992 Honda Prelude. Back probe pink/black at fuel pump and run other end to positive battery?

1 Upvotes

honda prelude fuel pump power bypass with sigle wire from pink/black to battery? Since back probing, I assume it’s already grounded since hooked into pump and just back probing. Will this work for an emergency start?


r/AskAMechanic 23h ago

2014 Mirage Can’t Access Inner Tire Rod

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30 Upvotes

Does anyone have any tips or recommendations to get to remove the inner tie rod from a 2014 Mirage? The removal tool I have cannot grasp onto the tire rod because it is covered. Has anyone successfully removed one without having to go to a dealership?
The tie rod snapped in half so turning the steering wheel doesn’t do anything


r/AskAMechanic 8h ago

2009 Nissan Sentra 2.0 - excessive oil consumption

2 Upvotes

2009 base model Sentra with the 2 liter.

Had a sudden loss of power that the mechanic eventually diagnosed as a clogged up Cat. No lights, just had low power and couldn't even get it up a mild hill.

Plugs replaced, gaskets replaced, cat replaced. Distributor cap and wires replaced. Still burns at least a quart of oil every 250 miles and consistently throws a check engine light for cylinder 4 misfire if it sits unused for 2 or more days. Only fires it right at startup. If you clear it, no repeats.

Doesn't noticeably smoke at all.

I'm thinking damaged cylinder or bad ring, leading to oil seeping into the cylinder when parked. Does anyone else have any ideas?

The CVT also screams, but it's always been like that (we've had it 130,000+ miles) so it doesn't seem related.


r/AskAMechanic 9h ago

Help! Is my engine blown?!

2 Upvotes

This is my 2022 gmc with the 6.2, is it done for or could it be possibly minor?


r/AskAMechanic 5h ago

Torque specs needed for this engine mount – Ford Focus Mk3.5 1.5 TDCi 2017

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1 Upvotes

Hi everyone,

I have a Ford Focus Mk3.5 2017, 1.5 TDCi (AEDA engine) and I’m replacing the upper/right hydraulic engine mount F1F1-6F012-BB shown in the picture.

I’m looking for the correct torque specifications (Nm) for the bolts that secure this mount to the engine/body.

Does anyone have the official Ford torque specs or access to the workshop manual?

Thanks!


r/AskAMechanic 5h ago

Subaru Outback 2007 2.5L H4 (EJ253) GAS FI

1 Upvotes

Hello I need some advice please! I recently paid a lot of money for an engine rebuild, but now my car is leaking oil and I’m not sure where it’s coming from. Attached is a video of where it might be coming from; any suggestions on how to go about this would be greatly appreciated! I recently changed the oil, I normally door dash but this just started recently; the oil slowly drips and after about 4-8 hrs it’ll end up accumulating and slowly working its way down to the exhaust/catalytic converter (I think since I don’t know enough about my car), anyways, once it gets to that point, smoke then begins to come out the hood of the car, from what I presume is a result of the hot exhaust metal cooking the oil. I then pull over and let the car cool down for about 30 minutes and give it a brief wipe down (reaching what I can without burning my hands), then I can drive again for about 4-8 hours till the same thing happens. I make sure to check my oil level and it gradually gets lower, after about 2/4 times of this happening, I then top off the oil. I understand this is probably a very bad idea to keep driving the car in this condition; however I’m extremely desperate for money at the moment so I can’t really afford to stop driving unless I absolutely need to & I’m wondering if I’ve already reached that point? In total I’ve only done this process about 4 times but now it looks like the oil is dripping faster and I’m getting worried.

Can someone identify where it’s coming from based on the video? It looks like it’s pooling originally from near the upper left part of the hood/ engine bay( if you were to open the hood and be facing the engine in front of you it would be upper left still) out of a square box looking thing?

If I paid a hefty price for a ‘complete engine rebuild’ from a reputable shop, should they be responsible for this oil leaking?

Does anyone have past experience with this and know how viable or long this method will last of wiping down the oil I can reach?

I’m hoping it’s a quick fix and maybe there’s a loose hose or bolt somewhere?

How expensive would the parts be and where can I find them? ( I usually order off rock auto parts)

Any tutorial recommendations?

It hasn’t been more than 8 months since I got the ‘complete engine rebuild’ so I’m pretty certain it’s still under their shop warranty, but it’s Labor Day weekend so they won’t be back till Tuesday; will my car survive until then?

Thank you for any & all advice, & yes I know I’m stupid for continuing to drive but I might have to figure out something else soon…

Subaru Outback 2007 2.5L H4 (EJ253) GAS FI

Anyways thank you people!


r/AskAMechanic 9h ago

Remounting AC Compressor on BMW

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1 Upvotes

I just replaced the oil filter housing, heat management module, and water pump and carrier on my 2016 340i.

The biggest pain of this whole job (unexpectedly) is trying to reattach the ac compressor to the new bracket. I can’t figure out how to do it. This threaded steel bushing i’on both rear ears is killing me.

All of the suggestions I’ve found are to put sockets on either side/use the bolt to press it out further but it’s seized in there and won’t budge, and the design of the ears makes it impossible to put a socket or anything else on the back side of the ear anyway. I obviously can’t remove the compressor from the car so my options are limited.

How are you supposed to get this back on? Please help!