91 f150 won’t start

Asked by Joseph Oct 22, 2023 at 06:59 PM about the 1991 Ford F-150 S LB

Question type: General

I was playing with my timing and bumped it by
accident and now it won’t start no mater we’re
the time if is set 91 4.9 I had just used seafoam
intake cleaner if that helps

1 Answer

157,475

Ok, remove the number one spark plug. Put your finger in the spark plug hole. Have a helper bump the starter by quickly turning the ignition to the start position in short bursts. When you feel pressure under your finger, you're on the compression stroke. Remove your finger and put a long screwdriver down into the spark plug hole. Have your helper bump the starter. The screwdriver will come up out of the hole as the piston comes up to the top of the cylinder. You want to keep hold of the screwdriver, loosely, BTW. Once the piston is at the very top of the cylinder stop bumping the starter. You are now at top dead center (TDC). Now, remove the distributor cap and mark the number one spark plug wire tower on the distributor housing. Loosen the bolt holding the distributor in place. Turn the distributor housing until your mark lines up with the distributor rotor. Put the distributor cap back on and the number one spark plug in and the number one spark plug wire on. Keep hold of the distributor housing as your helper cranks the engine. Slowly move the distributor one direction then the other until the engine starts. Make your final adjustment using a timing light. Hope that helps! Jim

Your Answer:

Own this car?

Share your experience with others.

1991 Ford F-150

Review another car

CarGurus Experts

  • #1
    OJ
    Reputation
    42,470
  • #2
    Gene Arnett
    Reputation
    16,040
  • #3
    Rowefast
    Reputation
    15,840
View All

Know more, shop wisely

Search

Related Models For Sale

Used GMC Sierra 1500
1,876 Great Deals out of 69,075 listings starting at $2,500
Used Ford F-250
189 listings starting at $18,900
Used Ford Ranger
694 Great Deals out of 20,752 listings starting at $1,995
Used Ford Mustang
987 Great Deals out of 19,719 listings starting at $2,950
Used Ford Explorer
2,348 Great Deals out of 56,088 listings starting at $1,995

Used Cars for Sale

2024 Ford F-150 For Sale
120 Great Deals out of 94,731 listings starting at $28,944
2023 Ford F-150 For Sale
859 Great Deals out of 10,150 listings starting at $18,500
2022 Ford F-150 For Sale
766 Great Deals out of 7,860 listings starting at $14,824
2021 Ford F-150 For Sale
1,066 Great Deals out of 10,353 listings starting at $13,984
2020 Ford F-150 For Sale
531 Great Deals out of 5,583 listings starting at $5,500

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. Content will be removed if CarGurus becomes aware that it violates our policies.