HCH II-Specific Discussions Model Years 2006-2011

Changing spark plugs when?

  #21  
Old 01-29-2019, 11:03 AM
Active Enthusiast
Thread Starter
Join Date: Jan 2017
Posts: 64
Default Re: Changing spark plugs when?

Thanks. The State of Florida abolished all vehicle emissions test requirements back in the 1990’s. I'm planning to sell my car next September.
 
  #22  
Old 02-04-2019, 01:18 PM
Active Enthusiast
Thread Starter
Join Date: Jan 2017
Posts: 64
Default Re: Changing spark plugs when?

Please look at the video of my muffler: https://photos.app.goo.gl/5zt3N14QgGEivswj8
My mother is accelerating at maximum in park position. The muffler is making a noise and moving. There is also a liquid coming out of it. Is it normal?
When driving, I never accelerate like that so I don't hear this noise. But I noticed a light noise from the back of my car recently.
 
  #23  
Old 02-04-2019, 02:40 PM
Ridiculously Active Enthusiast
Join Date: Sep 2014
Location: Mesa, AZ
Posts: 2,926
Default Re: Changing spark plugs when?

Originally Posted by villemiami View Post
Please look at the video of my muffler: https://photos.app.goo.gl/5zt3N14QgGEivswj8
My mother is accelerating at maximum in park position. The muffler is making a noise and moving. There is also a liquid coming out of it. Is it normal?
When driving, I never accelerate like that so I don't hear this noise. But I noticed a light noise from the back of my car recently.
I can't view the video at the moment due to restrictions on this computer.

1) Mufflers are hung with a rubber mount, so they should move - sometimes a lot.
2) Exhaust systems have heat shields along their length that can rattle or vibrate.
3) Gas is a hydrocarbon (chemical formula CnH(2n+2)) - composed primarily of molecules containing Carbon and Hydrogen atoms. When you burn them with Oxygen, you get compounds containing the same as the input... Carbon, Hydrogen and Oxygen. When fuel is clean and burning is perfect, you get only CO2 (carbon dioxide) and H2O (water vapor). When the exhaust system is cool/cold or has sat overnight, the water vapor can condense and drip out of the exhaust. Once the car and exhaust system is fully warmed up, the water vapor does not condense inside and only vapor exits the pipe.

You can often hold your hand in the exhaust stream and sense moisture condensing on your hand.

You may have noted that steam comes out of car exhaust in cold weather much like humans can see their breath on exhalation - that's the water vapor condensing in the air.

Gas tends to be a mix of the more complex hydrocarbons, so burning isn't perfect - we have catalytic converters to improve the quality of the exhaust (eliminate nitrous oxides and carbon monoxide).

Natural gas (Methane, CH4) and Propane (C3H8) are relatively "pure" hydrocarbon fuels that naturally burn much cleaner due to their more simple molecule and the fact that there is only one type of molecule present.

Nothing you describe seems out of the ordinary.

Tell Momma to ease up on the throttle!
 
  #24  
Old 02-04-2019, 04:39 PM
Ridiculously Active Enthusiast
Join Date: Sep 2014
Location: Mesa, AZ
Posts: 2,926
Default Re: Changing spark plugs when?

Saw the video. Completely normal.

Generally, not a good idea to sit there and bounce the engine off the rev limiter.
 
  #25  
Old 02-05-2019, 04:21 AM
Active Enthusiast
Thread Starter
Join Date: Jan 2017
Posts: 64
Default Re: Changing spark plugs when?

ok thanks
 
  #26  
Old 02-11-2019, 08:24 AM
Active Enthusiast
Thread Starter
Join Date: Jan 2017
Posts: 64
Default Re: Changing spark plugs when?

The malfunction indicator lamp turned off today, and I cleared the P0420 fault.
 
Related Topics
Thread
Topic Starter
Forum
Replies
Last Post
dwn2thalastroach
HCH II-Specific Discussions
31
02-01-2015 09:23 AM
surfman410
Toyota Highlander Hybrid
2
11-15-2010 01:15 PM
cbxtc6
HCH I-Specific Discussions
14
09-04-2010 06:20 PM
highflyer_i469
Honda Civic Hybrid
2
07-17-2007 02:40 PM
Estoril73
Honda Civic Hybrid
2
04-24-2007 06:50 PM


Thread Tools
Search this Thread
Quick Reply: Changing spark plugs when?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.