What people keep running into with mechanical advice
Complaints tagged mechanical advice, each raised by more than one person. One-off posts are not included.
9 recurring problems · 259 people · 12 forums we read
Raised more than once
Most people first.
- 171Vehicle cranks after fuel pump replacement but won't startA replacement fuel pump can deliver pressure while flooding the engine with excess gas, preventing it from catching. This leaves the vehicle cranking normally but refusing to start or run.
- 23How to handle international returns when a seller claims item was fineSellers often deny responsibility for damaged goods using pre-dispatch photos while buyers are left to figure out international shipping costs. This leaves the buyer stuck paying out of pocket for a return or being unable to resolve the dispute with the seller.
- 18How to tell if car suspension bushings need to be replacedWorn suspension bushings often show physical separation or cause unwanted noises that are difficult to identify visually without experience. Determining whether the wear requires an immediate repair or can wait a few weeks prevents unnecessary panic while ensuring vehicle safety.
- 17Why does a car shake when idling after sitting for years?Vehicles left sitting unused for long periods often develop heavy vibrations in gear and reverse upon startup, leaving owners stranded without knowing where to begin troubleshooting. This makes it difficult to restore an older vehicle to a drivable state without wasting money on random parts.
- 10How to safely start a car that has been sitting for yearsGasoline breaks down after six months, leaving stale fuel and carbon buildup that can damage the engine if cranked immediately. Draining the old fuel system and checking key components before turning the key prevents severe pre-detonation and engine failure.
- 7Why does my truck stall and die when shifting into reverse?Vehicles can stall immediately upon shifting into reverse or drive, accompanied by severe jerking and high idling speeds. This persistent issue can happen even with a brand new transmission installed, preventing the vehicle from operating normally when changing gears.
- 5Can a bad catalytic converter cause head gasket failure?Running a vehicle with a bad catalytic converter over thousands of miles leaves drivers questioning whether the added engine stress triggers head gasket failure or if the issue is simply age-related. Drivers also encounter related hardware problems, such as finding iron particles accumulating in the intercooler.
- 5Can't find torque spec onlineBasic maintenance details like torque specs for oil drain plugs or intake screws are frequently missing from online searches, leaving people with no information on how tightly to reinstall parts. Without these numbers, people are forced to guess or struggle to finish routine maintenance.
- 3Is it safe to reuse a rusty engine intake valve?Rust on the flat surface of a used intake valve leaves many wondering if it will cause engine damage or if it's just too much trouble to trust. Because going through a cylinder head rebuild is a massive effort, rebuilding with questionable used parts risks catastrophic failure and forces many to question whether they should just buy new ones instead.
Comes up alongside
Topics that keep appearing on the same problems — not topics with similar names.