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

44,035

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

41,115

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

17,320

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

Your Answer

Add photo

Related Questions

Avalon

Looking for a Used Avalon in your area?

CarGurus has 13,741 nationwide Avalon listings starting at $950.

ZIP:

Search Toyota Avalon Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Toyota Avalon Experts

#1 FordNut
FordNut
Reputation 1,620
#2 Tom Demyan
Tom Demyan
Reputation 1,560
#3 lilfrosty357
lilfrosty357
Reputation 740
View All

Related Models For Sale

Used Toyota Camry
1,121 Great Deals out of 96,506 listings starting at $1,250
Used Honda Accord
1,003 Great Deals out of 74,759 listings starting at $899
Used Lexus ES 350
386 Great Deals out of 13,481 listings starting at $4,495
Used Nissan Maxima
364 Great Deals out of 24,282 listings starting at $999
Used Toyota Highlander
555 Great Deals out of 22,875 listings starting at $2,295
Used Toyota Corolla
945 Great Deals out of 68,197 listings starting at $1,595
Used Nissan Altima
1,057 Great Deals out of 82,196 listings starting at $1,988
Used Toyota 4Runner
359 Great Deals out of 20,568 listings starting at $2,495
Used Toyota RAV4
718 Great Deals out of 55,589 listings starting at $2,488
Used Chevrolet Impala
905 Great Deals out of 35,161 listings starting at $1,700
Used Lexus GS 350
189 Great Deals out of 4,060 listings starting at $6,500
Used Lexus LS 460
95 Great Deals out of 2,655 listings starting at $7,950
Used Hyundai Sonata
665 Great Deals out of 48,710 listings starting at $1,200
Used Acura TL
286 Great Deals out of 7,535 listings starting at $2,450
Used Honda Civic
798 Great Deals out of 70,155 listings starting at $1,200

Used Cars For Sale

2017 Toyota Avalon Limited For Sale
918 listings starting at $36,253
2016 Toyota Avalon Limited For Sale
4 Great Deals out of 718 listings starting at $20,977
2015 Toyota Avalon Limited For Sale
3 Great Deals out of 114 listings starting at $19,777
2014 Toyota Avalon Limited For Sale
6 Great Deals out of 137 listings starting at $17,978
2013 Toyota Avalon Limited For Sale
20 Great Deals out of 325 listings starting at $15,223