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
    10,220
  • #2
    dandyoun
    Reputation
    4,830
  • #3
    tennisshoes
    Reputation
    3,660
View All

Related Models For Sale

Used GMC Sierra 1500
722 Great Deals out of 58,462 listings starting at $1,900
Used Dodge Ram 1500
316 Great Deals out of 9,549 listings starting at $800
Used Toyota Tacoma
439 Great Deals out of 44,078 listings starting at $1,995
Used Ford Mustang
270 Great Deals out of 37,081 listings starting at $2,150
Used Ford F-250
401 listings starting at $2,300
Used Ford Explorer
801 Great Deals out of 64,315 listings starting at $1,000
Used Chevrolet Tahoe
528 Great Deals out of 36,655 listings starting at $1,375

Used Cars For Sale

2018 Ford F-150 For Sale
79 Great Deals out of 138,368 listings starting at $17,895
2017 Ford F-150 For Sale
144 Great Deals out of 10,171 listings starting at $19,499
2016 Ford F-150 For Sale
213 Great Deals out of 8,805 listings starting at $14,500
2015 Ford F-150 For Sale
280 Great Deals out of 10,501 listings starting at $11,990
2014 Ford F-150 For Sale
414 Great Deals out of 11,726 listings starting at $7,995

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.