Q: Pops and misfires, what would make this happen?

asked by on November 05, 2015

My 2006 Honda Pilot will randomly start misfiring and making noise, then go back to normal. Sometimes I have to turn it off and then back on to get it to stop. The Check Engine light will pop up and the car starts running rough. This engine, along with the entire car, is at 87,000 miles. I worry that if I bring it in for repair, they’ll tear the motor out and replace it, costing me a few thousand dollars. Is it dangerous to drive my car like this? Is there any chance of repairing it at this point?

The Check Engine light coming on is an indication that continued operation could cause damage. The engine could also emit excessive emissions. You should have the vehicle’s computer scanned for codes. This test will confirm that when the light is on and the engine is running rough or misfiring with noise, it is the engine valve rockers sticking when sliding in and out of the valve control lock up. There is a Technical Service Bulletin (TSB) 07-070, dated 1/24/2012, that goes through a diagnostic test of the sticking rocker arms. The TSB computer scans check first for misfiring codes P0301 through P0306, with the noise in the engine. The engine valve rockers will have to be repaired or replaced as per the TSB to correct your problem. A trained mechanic, such as one from YourMechanic, can perform an engine misfire inspection and repair or replace parts as needed.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

What others are asking

Car making whining noise

You likely either have a belt tensioner pulley noise or a power steering noise (based upon experience). Either choices are common, but the car should be properly diagnosed before replacing parts and wasting money. A qualified technician, such as one...

Can't get axle all the way flush to transmission

Hi there. There is typically a slot or notch on GM axle splines that need to be properly aligned in order to fully engage. Damage to a spline can also cause the shaft to not fully align as well. If...

Transmission slipping and rough shifting - 1990 Toyota Cressida

Hello, thanks for writing in about your 1990 Toyota Cressida. The transmission is most likely the issue in this case. The fluid level and condition need to be checked. If the fluid level is extremely dark or exhibits a burnt...

My car had a clicking noise on startup. I replaced the timing chain, guides and tensioners but the noise is still there.

Many engines will make a small ticking sound upon startup when cold due to the fact that the engine oil has dripped down to the oil pan or the bottom of the engine. When the engine starts up, oil pressure...

How does the SRS (Supplemental Restraint System) indicator work?

The SRS indicator is tied to your car’s air bag system and provides important information for drivers about the condition of the system. The SRS light should flash on briefly immediately after cranking the engine and then go...

Seized engine, no oil leaks

Did your oil leak out from somewhere? Did your drain plug fall out? Did your engine have a major engine failure? I suspect the drain plug fell out on your engine. There have been incidents of the oil pan getting...

I noticed by the automatic gear shift panel is a slot for a key. I think it was some type of security so that if you locked it, no

The key slot is for disengaging the shift interlock in case the shift interlock is inoperative and you just stick the key into slot to release shifter.

2006 RR 4.4l got a P0628 fuel pump low voltage, both relays are good both fuses are good no voltage to signal relay to close and r

If the relay is not being powered, trace the circuit backward to the power source using the factory wiring diagram. You will find the interruption, or the faulty control module, if applicable, using that strategy. A similar procedure has to...

Got new water pump less than 9 months ago. Now boiling sound and overheating smell. Temp says its good

Hello. The overheating issue your vehicle is having is likely not caused by the water pump once again. Though an inspection of your water pump performance should be checked when trying to diagnose this issue. The temperature gauge not going...

Related articles

How to Replace an Air Fuel Ratio Sensor
The air fuel ratio sensor fails within a vehicle if the check engine light comes on. Poor engine performance results from oxygen sensor failure.
P2300 OBD-II Trouble Code: Ignition Coil A Primary Control Circuit Low
P2300 means the battery voltage sent to the ignition coil is not correct due to faulty coil, circuit wires, or faulty PCM .
P2629 OBD-II Trouble Code: O2 Sensor Pumping Current Trim Circuit / Open Bank 2 Sensor 1
P2629 P2629 code definition The P2629 trouble code detects a problem with the voltage signal from the oxygen sensor pumping current trim circuit of sensor 1 in bank 2. What the P2629 code means P2629 is a standard OBD-II trouble...