Why does my Honda Pilot make a knocking sound?
“I can say that switching to synthetic oil is unlikely to be your answer — the Honda Pilot does not require synthetic oil.” Generally, when the engine is making strange sounds, the aptly-named engine knock is often the culprit. When the engine is working properly, the spark plugs ignite the gasoline in perfectly-timed waves that move the pistons.
Why does my Honda 3.5L V6 make a knocking noise?
A knocking or ticking noise on some Honda 3.5L V6 engines occurs when the rocker shaft bridge has excessive clearance from the factory. We often encounter engines that have a cold-start knock or ticking noise. In this case, the 3.5L V6 engines installed in various Honda models can make a knocking or ticking noise at idle and only when warm.
What to do if you hear a knocking noise in the engine?
Start the engine and let it reach normal operating temperature. While the engine is idling, listen for a knock or ticking noise. Use a stethoscope to find the location of the noise. If you hear knocking or ticking from either cylinder head, go to the Repair Procedure.
What makes a van rattle on a cold start?
Rattle on cold start. Van has to sit over night or for many hours, like 10+. Start up NO issues in park or neutral. When you shift into R or D it will start. If you hold brake then bump RPMS up to about 1100-1200 it is the loudest at that RPM. Goes away in about a minute. Worse on cold mornings. Went to Honda and they said TB tensioner.
A knocking or ticking noise on some Honda 3.5L V6 engines occurs when the rocker shaft bridge has excessive clearance from the factory. We often encounter engines that have a cold-start knock or ticking noise. In this case, the 3.5L V6 engines installed in various Honda models can make a knocking or ticking noise at idle and only when warm.
What causes the clicking sound on a cold start engine?
Piston slap occurs on a cold engine when clearance between the piston’s lower skirt and cylinder wall allow the piston to rock or cock slightly on the downward power stroke and slap against the cylinder wall, generating that slightly duller tapping sound. Another possible cause is called CCDI, or combustion chamber deposit interference.
Start the engine and let it reach normal operating temperature. While the engine is idling, listen for a knock or ticking noise. Use a stethoscope to find the location of the noise. If you hear knocking or ticking from either cylinder head, go to the Repair Procedure.