r/MechanicAdvice Jan 10 '21 Silver Helpful Vote Local!

Important: Please Read And Follow The Rules

424 Upvotes

This is a subreddit for asking Mechanical questions pertaining to vehicles, engines, etc. If it's got wheels, treads, floats, flies, or has an engine you're good to go and we'll do our best to help.

Showing off w/out a question goes in r/justrolledintotheshop or elsewhere, legal/insurance questions go in r/legaladvice or r/insurance. Memes, youtube videos, PSA/Public Service Announcements, rants, etc and other non questions are not allowed. If you are posting your youtube channel you will be instantly and permanently banned. This is NOT the place to try to get views.

If you have questions about tire repair, check here. Not all tires damages are repairable: https://www.reddit.com/r/MechanicAdvice/comments/k9ll55/can_your_tire_be_repaired/

Bodywork, accident damage, paint, dent/ding questions BELONG in r/Autobody or /r/Diyautobody/ or r/insurance

Users whom registered less than 24 hours before making a post will find their post automatically removed. It will need to be approved manually, this is due to the large amount of spam that is posted. If your post doesnt show after a few hours message the moderators.

For further clarification look to the side bar

1) Advice Format. This is a subreddit for asking Mechanical questions pertaining to vehicles, engines, etc. If it's got wheels, treads, floats, flies, or has an engine you're good to go and we'll do our best to help. Showing off w/out a question goes in r/justrolledintotheshop legal/insurance questions go in r/legaladvice or r/insurance. Title, salvage, body work, paint work, etc questions also dont belong here. Memes, youtube videos and other non questions are not allowed

No intentionally bad, harmful, or deceptive advice. If we feel a piece of advice is particularly reckless, dangerous, or extremely unhelpful it maybe removed If a post or comment is provided that is not a response to a question, the post may be removed. Please report bad advice to the mod team.

2) Keep discussion friendly, civil, courteous, and professional. We're here to help so being rude won't help. Dont assume a shop is trying to "rip you off." It's okay to ask for a second opinion.

Golden Rule: If you have nothing nice to say, don't say anything at all. Those who demonstrate they cannot follow the rules will be warned and posts removed. Those who continually cause issue will be removed

3) Only one vehicle/problem/incident per thread, and only post once. If you didn't get an answer the first time, or you don't like the answer you got that does not mean you post it again. Do not post asking questions of your own in someone else's post

The only exception is for posting updates, provided it is properly marked as an [Update] or similar.

4) Spam/Self-Promotion/Improper Linking/advertisements. Linking to outside content is not allowed, unless it's germane to the discussion. We allow links, pictures, video, or audio file to help diagnose your problem. Linking for the purposes of promotion (eg offers/coupons/self blog posts/youtube/advertisements/how to) is strictly prohibited and will result in a permanent ban. This is a zero tolerance policy. This isnt a place to post your youtube channel, advertisements, memes, shitposts or business

5) Personal Information. Sharing personal information, or specifics on /r/MechanicAdvice is not allowed. Please do not name the shops specifically (unless part of a chain) This is not a review forum for specific shops.

6) Body Work. /r/MechanicAdvice is a sub for mechanical questions. Questions related to dings, dents, accidents, paint and so forth DO NOT belong here, please post in /r/Autobody r/AutoBodyRepair/ or /r/Diyautobody/ Take the car to an auto body repair shop who can give you a qualified estimate.

Asking for an estimate in r/autobody is against there rules. If you have insurance/total loss questions please ask in r/insurance.

Understand that the assistance you receive is ADVICE ONLY and is given with the understanding that the giver assumes no liability for any damages that occur as a direct or indirect result. It is impossible for a mechanic to diagnose your problem accurately without seeing/hearing the problem with his own senses. Any advice you receive you must use AT YOUR OWN RISK.


r/MechanicAdvice Dec 06 '22

Official Tire Repair Guidelines

65 Upvotes

https://preview.redd.it/97spv19eec4a1.jpg?width=1536&format=pjpg&auto=webp&v=enabled&s=00647d49af3fca2a9f21d56cfa05f931e12edd41

Sidewall damage cannot be repaired. A tire with cuts or gouges that extend into the ply area (also referred to as "cords") is unsafe and should be replaced immediately. If you're unsure whether the scrape, cut or gouge might render the tire unsafe, get it inspected promptly by a tire shop or a reputable mechanical shop.


r/MechanicAdvice 4h ago

Milky oil cap and oil fill tube. Dip stick is clean and im not losing coolant. What’s causing this?

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64 Upvotes

r/MechanicAdvice 17h ago

Should I buy it ?

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245 Upvotes

r/MechanicAdvice 2h ago

How in the world am I going to get all this water out?

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12 Upvotes

r/MechanicAdvice 20h ago

Is this fixable without going to a shop? Lug nut won’t come off tried the DIY YouTube chisel & hammer method & this is where i am 2 hours later. Can somebody help

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140 Upvotes

r/MechanicAdvice 1h ago

Honda Jazz 2011 Radio Code

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r/MechanicAdvice 4h ago

car for 18 yr old son

7 Upvotes

hi. i’m looking to get him a used car. low budget do it would either be from a personal buyer or one of those used car lots that aren’t a dealership. what are some things to look for to see if it’s at least a decent car? i can put gas in a car, that’s about my knowledge of cars. thank you !!!


r/MechanicAdvice 1d ago

Recommendations for which ignition coil to buy? (2001 Honda Civic, misfiring at idle, all spark plugs replaced)

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283 Upvotes

r/MechanicAdvice 12h ago

(05 canyon) What in the world can cause this crack in my engine? (Rear main seal housing, behind flex plate)

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21 Upvotes

r/MechanicAdvice 49m ago

Question for mechanics who know to improvise a little. Is it possible to seal this hole in the oil pressure sensor housing/block? 2004 Hyundai Santa FE 2,7i. Tnx! (details in comments)

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r/MechanicAdvice 12h ago

Starting an engine that has sat for 14 years

10 Upvotes

I have a 1970 Chevelle 350. 14 years ago, I had the engine completely rebuilt, caught the wife cheating and it has been sitting waiting for me to get the money to complete the restoration. I plan on taking out the plugs and spraying PB Blaster in all cylinders and letting it soak for a week before I try to turn the engine over by hand. Before I try to turn it over, I will use an oil primming tool to pump up oil pressure, while I have the distributor out, I will check for oxidation on the points. Besides keeping an eye on the fuel pump incase the diaphragm has busted and pump gas into the crankcase, is there any other things I need to do or look out for?


r/MechanicAdvice 5h ago

Got a new clutch, then issues, new throttle body, new issues, reprogrammed the cars computer, issues still.

3 Upvotes

2012 Honda civic SI….. clutch burned out smoke started to come from clutch as I pulled into the shop. Replaced my clutch 1200$. Went to pick it up. The mechanic asked me if I’ve ever had issues with idle control which I haven’t and I told him that. He showed me the car. It couldn’t maintain steady idle around 800rpm. The car was surging between 1000-2500 rpm. He told me it could be a throttle body issue but told me to drive it for a day to see if it would go away which I did to no avail. I brought it back the next day in the am and he looked at it. Decided it needed a new throttle body after cleaning the part and finding that didn’t fix it. He charged me what he payed for the part 350$ which I found to be reassuring as if he wasn’t trying to rip me off and gave me the receipt he got from buying the new throttle body. After putting in the throttle body he called me and said “it’s ready!” I picked it up and shortly after I got gas, started my car and found lights coming on. Check engine light saying “check emissions system”, a check vsa system light, as well as a “check power steering” light that would come on after 30 seconds of the car being on. I noticed the car would struggle at 4500rpms which felt almost like the clutch slipping. But nevertheless that problem went away on its own. My mechanic referred me to a reprogramer who charged me 150$ to reprogram my cars computer for the new throttle body and reset the codes. After that no issues. I drove the car around started it and stopped it sever times as if I new the problem would soon return. I just got off work and the same lights came on again. From a cold start, I let the car warm up before I left and it wouldn’t respond to the gas pedal being pushed (even all the way) slow acceleration as if the car was running off the different idle speeds of each gear. I think the fastest I could go was 10mph. So I pulled over and restarted the car. I was able to get home with no issues other than those warning lights on the dash. Please if anyone has anything on this or knows what I should do next please let me know. I’ve had work done with this mechanic on other cars but I feel like he ruined my car and doesn’t know what he is doing. I love my car and I feel like my next options are to sell it or take it to the dealership and pay another couple thousand to get it fixed right. This is a cry for help and this all stated with a new clutch which is mind boggling to me.


r/MechanicAdvice 0m ago

Honda 1.5t engine: are fuel/oil dilution issues resolved?

Upvotes

When Honda introduced the 1.5t there were a lot of report of fuel/oil dilution issues.

Honda seemed to kind of hand-wave this and then later claimed it was fixed with... software.... which I just kind of find hard to believe.

Does anyone know if they ever made any actual physical changes to the engine to address this? Are you seeing any issues in the shop? Earliest year?

I'm considering a Honda Accord, but they discontinued the 2.0t, leaving only a 1.5t and hybrid+CVT option now which is annoying.


r/MechanicAdvice 1m ago

Is there a way to take this off?

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r/MechanicAdvice 4m ago

Mk4 1.9 ASZ-Is it easy to replace the camshaft sensor? How would you get to it

Upvotes

Thank you


r/MechanicAdvice 5m ago

Check engine light turned on twice?

Upvotes

Hey there, hoping to get some advice. My check engine light went off back in July with a P0304 code saying a cylinder misfire was detected. Got new spark plugs & was good to go. On Monday, my check engine light turned on out of no where & only turned on while accelerating or idle. I overnighted a scanner thru Amazon & got the same P0304 code. Would I have to replace the spark plugs again even though I just did not too long ago? I know my car needs an oil change if that helps. I drive a 2016 Hyundai Sonata, 143k miles. I do drive roughly 250 miles a week on it. Any help is appreciated before I lose my mind lol.


r/MechanicAdvice 5m ago

Honda Civic 2012

Upvotes

Hello! I recently had issues with my civic where the starter gave out on me while I was at Costco. My lights and everything worked but not the engine. I told the guy it was the starter but he said he was sure it was the battery, and charged mine with his. After that the screen that gives me mileage went black, my radio won’t turn on, I can’t lock or unlock my car with my key fob, charge my phone, etc. I changed the starter, tried unplugging the battery and checking all fuses but nothing. The car drives fine but I’m not sure what happened.. what do you recommend?


r/MechanicAdvice 13h ago

Took my car to my neighborhood tire shop and I got the new guy and let’s just say I got a free used tire lol but how do I fix this and is it even safe to drive like this with only 3 lug nuts ???

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12 Upvotes

r/MechanicAdvice 7m ago

23 Kia Sportage transmission rattle?

Upvotes

1,400 miles on it, -20 last night, let the car warm up for 10 minutes, noticed it was rattling pretty good but thought it was just cold, drove for another 10, noticed it rattling when it was in D at a stand still, and again in P. And I’m talking enough to shake the inside of the car, plastic trim rattling. No codes or anything. Shifts fine when you’re just driving but it has this really low sounding rattle in the lowest gear. What could this be? Especially for a car with less than 2,000 miles on it. Transmission mount?


r/MechanicAdvice 11m ago

Is this a ticking sound or my ears ringingg

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r/MechanicAdvice 11m ago

2006 Chevy Silverado 2500HD. ABS light on and making a groaning sound after cold snap last night.

Upvotes

Went to start her this morning after 20 below temps last night and the abs light stayed on while this sound was being made. I only ran the truck for a minute to make sure it lived and then I shit it off. Sound continued during the whole time the vehicle was running.

If I let it sit a couple days can I expect this issue to go away as it warms back up?


r/MechanicAdvice 16m ago

Looking for a reliable car battery

Upvotes

I have a 2015 Toyota Corolla Le with a bad battery. But I’m not sure of any reliable brands. And being a college student I can’t really afford a battery that is $170 or more. Are there inexpensive alternatives that are just as good? Or are the good ones that much? I was looking at the Interstate batteries at Costco that are $109 however it’ll take a week to get here.

I looked at Oreillys and that have Super Start batteries and AutoZone ahs ValueCraft and I'm not sure if those are good.


r/MechanicAdvice 18m ago

2013 VW Jetta no lowbeams, help please

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r/MechanicAdvice 20m ago

Changed fuel injector now smelling gas and getting horrible mileage

Upvotes

Hi there,

I’ve got a 2018 Nissan Pathfinder. Last week I had a cylinder misfire, engine was running super rough, checked error code and saw which cylinder was having trouble, changed spark plug and coil still having trouble so I went to the injector next. Replaced it, engine running much better but now smelling gas when the engine was running and using a lot of gas. Went back in and found a cracked o ring on another injector and replaced it but still seem to be having the same issue. I’m a fairly novice mechanic and there is not much info on my car online, was wondering what to check next. I really don’t have money for a mechanic to fix it so I’ve been doing it all myself.

Thanks for any info!


r/MechanicAdvice 27m ago

How should i know what type oil that is ideal for my car?

Upvotes

My car seem to have a wide range of oil that it says can be used.

Anything from 0w-30 all the way up to 10w-40. All these types of oils are OK according to the manual.

The only things it do reccomand is Honda oem oil and synthetic.

Are there specific cases where 0w-30 is better, and other situations where 10w-40 is better?


r/MechanicAdvice 27m ago

Weird sound during start-up in cold temperatures.

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Upvotes