Engine noises -vid-
B*a*n*n*e*d
Joined: Oct 2011
Posts: 1,022
Likes: 0
Re: Engine noises -vid-
could be lifters. could be a bad harmonic balancer. Usually a rod knock will be the loudest when there is no load on the engine. If you quickly goose the throttle you will hear the knock whenever the rpm reaches its peak right before it falls off. It can be bad enough to knock all the time.
If you want to know for sure if its a bad rod bearing without dropping the pan you can do this.
Pull all the spark plugs.
Starting with cylinder number 1, rotate the engine to Top dead center on cyl number 1. Then rotate the crank enough for the piston to start the down stroke and stop. Using a long screwdriver push down firmly on the piston. If the bearing on the cylinder has play then the piston will drop down a little.
Do this for the other 3 cylinders.
If you want to know for sure if its a bad rod bearing without dropping the pan you can do this.
Pull all the spark plugs.
Starting with cylinder number 1, rotate the engine to Top dead center on cyl number 1. Then rotate the crank enough for the piston to start the down stroke and stop. Using a long screwdriver push down firmly on the piston. If the bearing on the cylinder has play then the piston will drop down a little.
Do this for the other 3 cylinders.
Trending Topics
Trial User
Joined: Feb 2013
Posts: 11
Likes: 0
Thread Starter
Honda-Tech Member
Joined: Jul 2012
Posts: 30
Likes: 0
Re: Engine noises -vid-
What can be the problem the noise happens when its about to shift in the 2k range. like 1 or 2 seconds before its shifts, you hear duh duh duh (noise in video) than it shifts. But if i put a greater load on it (pressing the gas pedal more firmly, the noise is less audible when its shifting in that range.
Thread
Thread Starter
Forum
Replies
Last Post