Do Not Sell My Personal Information Jump to content


  • Join The Club

    Join the Lexus Owners Club and be part of the Community. It's FREE!

     

2018 RX450h P0306 cylinder 6 misfiring


Recommended Posts

Hey all! first post, so hello 🙂

I got the subject error come up a few months ago. A bit of googling suggested that I changed the spark plug in cylinder 6 (rightmost plug, front of engine) which I did. The issue was seemingly cured for a week or so, then came back with the new spark plug fitted, but where it was quick and constant with the old plug for it to appear, it now only comes up on heavy load of the accelerator.

With the cold mornings we've had it's been a bit lumpy to start but settles down after a minute or two. No change in MPG. No smoke out of the exhaust other than what happens normally at initial start up.

The engine coolant reservoir is still full and pink, so no loss of coolant or mixture of oil that I can see.

The previous spark plug was pretty filthy; rust or burnt metal up to and around the nut. Checked this one today and it looks fine. 

Pretty stumped. Anyone have any ideas? 

20230402_130800 Medium.jpeg

20230402_130808(0) Large.jpeg

20230402_130936 Large.jpeg

Link to comment
Share on other sites

Latest Deals

Lexus Official Store for genuine Lexus parts & accessories

Disclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via eBay links

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share






Lexus Owners Club Powered by Invision Community


eBay Disclosure: As the club is an eBay Partner, the club may earn commision if you make a purchase via the clubs eBay links.

DISCLAIMER: Lexusownersclub.co.uk is an independent Lexus forum for owners of Lexus vehicles. The club is not part of Lexus UK nor affiliated with or endorsed by Lexus UK in any way. The material contained in the forums is submitted by the general public and is NOT endorsed by Lexus Owners Club, ACI LTD, Lexus UK or Toyota Motor Corporation. The official Lexus website can be found at http://www.lexus.co.uk
×
  • Create New...