What is causing valve train rattle when I first start the engine from cold start

Asked by Jan 29, 2016 at 07:07 PM about the 2006 Toyota Avalon Limited

Question type: Maintenance & Repair

When I first start the engine I hear a loud valve train rattle for about 1 to 2 seconds.  I get this every time the cars sits off for about 3 to 4 hours.  Once on the car is quite and very smooth.  I change the oil religiously every 3K and only use Mobil 1 synthetic.

3 Answers

77,855

There is clearance for the moving parts so when the engine warms up and oil pressure builds up, then the engine quiets down.

91,885

Cam chain rattle until the oil pressure driven tensioner takes up the slack in the chain.

1 of 1 people found this helpful.
20,790

Try adding some Lucas Engine Oil Stabilizer for synthetic oil. No promises but it my help.

Your Answer

Avalon

Looking for a Used Avalon in your area?

CarGurus has 14,611 nationwide Avalon listings starting at $1,000.

ZIP:

Toyota Avalon Experts

  • #1
    Tom Demyan
    Reputation
    1,940
  • #2
    lilfrosty357
    Reputation
    970
  • #3
    Farmboy93
    Reputation
    740
View All

Related Models For Sale

Used Toyota Camry
1,122 Great Deals out of 77,119 listings starting at $1,400
Used Honda Accord
909 Great Deals out of 78,520 listings starting at $1,295
Used Lexus ES 350
364 Great Deals out of 10,666 listings starting at $3,991
Used Toyota Highlander
569 Great Deals out of 37,473 listings starting at $2,000
Used Nissan Maxima
362 Great Deals out of 20,816 listings starting at $1,175
Used Toyota Corolla
924 Great Deals out of 65,651 listings starting at $1,500
Used Toyota RAV4
708 Great Deals out of 54,724 listings starting at $999
Used Toyota 4Runner
315 Great Deals out of 27,463 listings starting at $1,900
Used Lexus GS 350
166 Great Deals out of 3,610 listings starting at $5,800
Used Nissan Altima
1,179 Great Deals out of 74,974 listings starting at $900
Used Lexus LS 460
81 Great Deals out of 1,840 listings starting at $7,858
Used Chevrolet Impala
560 Great Deals out of 33,367 listings starting at $1,400
Used Lexus RX 350
583 Great Deals out of 17,965 listings starting at $3,000
Used Honda Civic
716 Great Deals out of 53,659 listings starting at $1,495
Used Buick LaCrosse
336 Great Deals out of 15,907 listings starting at $500

Used Cars For Sale

2018 Toyota Avalon Limited For Sale
1,959 listings starting at $32,794
2017 Toyota Avalon Limited For Sale
155 listings starting at $27,990
2016 Toyota Avalon Limited For Sale
102 listings starting at $19,988
2015 Toyota Avalon Limited For Sale
11 Great Deals out of 171 listings starting at $18,558
2014 Toyota Avalon Limited For Sale
13 Great Deals out of 229 listings starting at $15,990

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.