Why does my car engine rattle when I start it?

Why does my car engine rattle when I start it?

If you hear a “clack-clack” kind of rattle when you start your car’s engine, it could be a sign of piston slap. Pistons move up and down in their cylinders with a tight fit between the piston and cylinder wall. While the problem could infect just one cylinder-piston combination, more than one is likely affected.

Why is my BMW making a rattling noise?

When there is excess clearance between the crankshaft and connecting rod it can cause quite a noise. Overheating is a problem that will create a clicking or rattling noise in the engine compartment. This could be caused by many different factors such as low oil levels, low oil pressure, and cooling problems.

Why is my truck making a rattling noise?

If the rattling sound sounds like it is coming from underneath your vehicle, you likely are experiencing a problem with your exhaust system. Exhaust system problems include catalytic converter problems, muffler issues or corroded pipe, can sound like light rattling to rocks shaking beneath your car.

Why does my Toyota Matrix Rattle at Cold Start?

At 110K km (68K miles) my Toyota matrix (1.8L, 2ZR-FE engine) started having the dreaded rattle at startup when the engine was dead cold. (TSB 0087-09). Since the car was out of warranty I paid to have it repaired for approx. $600 canuck dollars by the Toyota dealer where I bought the car used.

Why does my VVT rattle when I start the car?

In certain cases, the VVT gear housing and sprocket could separate and result in the engine stopping while the vehicle is being driven, increasing the risk of a crash. Toyota theorized that the condition could be related to an engine noise issue at start-up being investigated on certain engines.

Why does my Toyota Corolla make a noise when I start the car?

The noise is caused by the intake timing gear, as per TSB. The problem is that the replacement timing gear fails just like the original one does. What’s strange is that 2014+ Corolla with the same 2ZR-FE engine have no such complaint or TSB for it.

Why does the engine Rattle at Cold Start?

The car is now at 230K (142K miles), 2.5 years later, and the rattle recently became noticeable again; it could have something to do with the colder weather being back here in Canada but my wife swears it was doing it earlier this year. I have 2 questions. 1. Has anyone else had this work done and found it to come back?