Here's a breakdown of what could be causing the problem and what you should do:
Possible Causes of Low Oil Pressure:
* Low oil level: This is the simplest and hopefully the only cause. Check your oil level using the dipstick. If it's low, add the correct type and amount of oil (check your owner's manual). However, even if you add oil, the shaking and no-start condition suggests a more serious problem is likely.
* Oil pump failure: The oil pump is responsible for circulating oil throughout the engine. A faulty pump can't build sufficient pressure. This is a major repair.
* Worn or damaged bearings: Low oil pressure can be a symptom of worn crankshaft, connecting rod, or camshaft bearings. These bearings are critical for engine operation, and damage will lead to significant engine damage.
* Clogged oil filter: A clogged filter restricts oil flow, leading to low pressure. Replacing the filter is a relatively easy fix, but unlikely to be the sole cause given your engine won't start.
* Leaking oil: A significant oil leak can deplete the oil level rapidly, causing low pressure. Inspect the engine for leaks.
* Oil cooler problems: A malfunctioning oil cooler can restrict oil flow.
* Damaged oil passages: Internal engine damage could block oil passages. This is a severe problem.
What You Should Do:
1. Do NOT attempt to start the car. This could cause irreparable damage to your engine.
2. Have the car towed to a qualified mechanic. This is not a DIY repair unless you have significant experience with engine repair. Attempting to diagnose and fix the problem yourself could lead to further complications and costly repairs.
3. Describe the symptoms clearly to the mechanic: Tell them the engine shakes, won't start, and you have low oil pressure.
The mechanic will need to diagnose the root cause of the low oil pressure. Depending on the cause, the repair could range from a simple oil change and filter replacement (unlikely in this case) to a major engine overhaul or even engine replacement. The sooner you get it to a professional, the better the chances of minimizing the damage and repair costs.
