Skip the auto shop - Our mechanics make house calls

Q: The engine ticking on a '95 Lexus LS 400

asked by on

I've got a '95 Lexus LS 400, with 390,000 miles and recently I've started hearing a ticking sound from the engine and the ticking is faster if I put my foot on the gas. Any thoughts about what it could be?

A: The first thing you’d want to do is get som...

The first thing you’d want to do is get someone to check the valve lash--it may need the valves adjusted. Those things have pretty bullet-proof engines but they do have the valve adjustments on them that are little, stainless steel shims.

The little stainless steel shims, when they wear out and it starts clicking, are a really tough job, because not only do you have to take a lot of the engine apart to get the shims out, but then you have to measure in first to see how much off they are and then take the shims out, measure them and buy shims that are so much bigger or larger so that it works.

That’s something you really should pay a professional mechanic to do. You can have a technician from YourMechanic adjust your valve so that you don’t have to do it for yourself. Let’s say that the valves were all adjusted correctly and it wasn’t that, they’ll check the things like the fuel injectors. Sometimes they wear and they click. They will have a little stethoscope to listen the fuel injectors and diagnose exactly what is causing the ticking noise.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Ticking noise in engine does it need valve adjustment??

Hi there. The valves make a ticking noise as they wear, and in order to do any kind of valve adjustment you would need to have the valve clearance checked. If it needs adjustment, then the valve lash adjuster (also...

Q: Alarm system warning light on.

Hello. Generally, most warning lights come with some fault code, or a trained technician can test the circuits and determine the problem. Have a certified technician, like the ones at YourMechanic, scan the vehicle for any specific fault code and...

Q: A/C blows only warm air on driver's side; passenger side is cold

Some A/C systems have problems disconnecting or losing communication between the A/C control head and the temperature blend door actuators. This may require the A/C control head to be reprogrammed by a factory level scanner capable of the reprogramming of...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...