I just got a 1997 f150 and i hear a knocking sound under the hood

Asked by Feb 18, 2015 at 01:49 PM about the 1997 Ford F-150 STD 4WD LB

Question type: Maintenance & Repair

It sounds like its coming from the
motor but sometimes its sounds
like its faster than it is at other
times

2 Answers

Probably your valves ticking. They would go faster at higher RPM's and slower at low RPM's. Older vehicles will have loose valves that don't always work as well as they once did and cause a lot of noise. Since it is 1997 model it probably is about time to have a valve job done, which can be expensive, but you can keep driving for a while you just won't get the best efficiency out of your ride.

It could be your exhaust! You may have a leak at manifold

Your Answer

Add photo

Related Questions

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 6,280
#2 dandyoun
dandyoun
Reputation 3,960
#3 tennisshoes
tennisshoes
Reputation 2,340
View All

Related Models For Sale

Used GMC Sierra 1500
1,145 Great Deals out of 57,997 listings starting at $995
Used Dodge Ram 1500
547 Great Deals out of 12,938 listings starting at $1,795
Used Toyota Tacoma
777 Great Deals out of 33,343 listings starting at $1,900
Used Ford F-250
553 listings starting at $1,977
Used Ford Mustang
726 Great Deals out of 38,314 listings starting at $1,750
Used Ford Ranger
223 Great Deals out of 6,942 listings starting at $1,500
Used Ford Explorer
1,434 Great Deals out of 72,311 listings starting at $985
Used Chevrolet Tahoe
1,064 Great Deals out of 32,232 listings starting at $1,495

Used Cars For Sale

2017 Ford F-150 For Sale
36,531 listings starting at $17,605
2016 Ford F-150 For Sale
218 Great Deals out of 98,125 listings starting at $17,795
2015 Ford F-150 For Sale
286 Great Deals out of 8,309 listings starting at $18,891
2014 Ford F-150 For Sale
557 Great Deals out of 11,349 listings starting at $9,900
2013 Ford F-150 For Sale
800 Great Deals out of 14,763 listings starting at $7,527