Q: After overhaul my Ka24 d21 doesn't rev pass 4000 rpm

asked by on

Ka21 after overhaul don't rev pass 4000rpm. I got it once to rev out and i drive it and after parking for an hour it limited at 4000rpm like its not getting enough gas.
My car has a manual transmission.

Hi there. From the description you have provided, I’m not sure running a recently overhauled engine over 4,000 rpm is a good idea. There is a 500 mile break-in period recommended by most rebuilders. Change the engine oil and filter after the break-in period, then drive it hard. Assuming you are past the break-in, it could be a fuel delivery issue such as a fuel pump or fuel filter. It could also be due to a restricted exhaust system, such as a partially plugged catalytic converter. To have all of this checked, I recommend having your vehicle’s power problem diagnosed and repaired by a certified technician, like one from YourMechanic.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. After overhaul my Ka24 d21 doesn't rev pass 4000 rpm

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: One of my fuel injector burned out what's wrong?

If you are referring to the electrical solenoid within the injector, like any electrical part it can fail due to degradation of the insulation, wire breaks and so forth. The injector can be tested while still on the car and...

Q: Broken dog bone motor mount causing me not to have 5th gear , need to know that's why I don't have it

Usually if one motor/engine mount is worn or broken, the remaining mounts are most likely badly worn and probably need replacement as well. Especially if the vehicle has been driven for some time with one broken mount. That puts added...

Q: My truck is backfiring when idling and when accelerating will not drive.

You may have a broken valve spring or sticking valves and will need to have the engine compression tested to see if one or more cylinders are low on compression and may need to have a valve job done. ...

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.