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

Ford F-150 Experts

  • #1
    OJ
    Reputation
    9,070
  • #2
    dandyoun
    Reputation
    4,570
  • #3
    tennisshoes
    Reputation
    3,120
View All

Related Models For Sale

Used GMC Sierra 1500
985 Great Deals out of 66,547 listings starting at $2,495
Used Dodge Ram 1500
360 Great Deals out of 10,776 listings starting at $1,500
Used Toyota Tacoma
566 Great Deals out of 43,788 listings starting at $2,200
Used Ford Mustang
590 Great Deals out of 36,167 listings starting at $1,800
Used Ford F-250
469 listings starting at $2,550
Used Chevrolet Tahoe
695 Great Deals out of 41,238 listings starting at $1,995
Used Ford Explorer
873 Great Deals out of 67,246 listings starting at $1,295

Used Cars For Sale

2018 Ford F-150 For Sale
60,059 listings starting at $21,850
2017 Ford F-150 For Sale
122 Great Deals out of 60,952 listings starting at $17,990
2016 Ford F-150 For Sale
128 Great Deals out of 7,898 listings starting at $16,995
2015 Ford F-150 For Sale
335 Great Deals out of 11,408 listings starting at $15,591
2014 Ford F-150 For Sale
498 Great Deals out of 14,304 listings starting at $9,999

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.