2003 ford f150 cranks but no start,

Asked by Nov 07, 2017 at 11:05 AM about the 2003 Ford F-150

Question type: Maintenance & Repair

I have a 2003 ford f150 with a v6 4.2l. my issue is that it wont start. I can spray starter fluid into the intake manifold and it fires right up. I have replaced the Fuel filter checked the fuel lines for pressure (good) I have a spark(as ive said car runs beautifully when starter fluid is used fires right up)occasionally starts on its own. had the dealership do a diagnostic and couldn't find the cause no check engine light no code. im stumped I love my truck its beauty and brawn, but im stumped does anyone have a likely cause or a list of things I should start replacing

3 Answers

10

ok lets see it fires right up when you spray the starting fluid. so that means you are getting fire to the plugs. and you got air flow to the engine. and your fuel pressure shows good. the only thing I can think would be your issue would be to check your fuses and see if there is a fuse for the fuel injectors maybe they are just not spraying fuel in to the engine. and if there isn't a fuse take a multimeter and check the connections to them and see it they are getting any signal pulses and if so your sprayers may have crapped out but they aren't that big of a problem to replace

116,235

Did the dealer do a live data scan? This really sounds like a sensor misread, no check engine light cause the computer sees the sensor as functional even though the readings are off. Find a shop that can do live data scanning or if you have a scanner that does it, look for a sensor reading that does not correspond with outside temps, engine temps, air charge temps or even out range readings. Computer and sensor grounds should also be checked, cleaned or repaired as needed.

the dealer did do a live data scan no faults or codes were found in the last few days itll start occasionally on its own but sometimes still refuses and I have to use starter fluid to get it going once running it runs amazingly no change in gas mileage. with no fault no code im having a hard time isolating the issue especially since sometimes its really bad and sometimes really good (in reference to starting)

Your Answer:

F-150

Looking for a Used F-150 in your area?

CarGurus has 208,288 nationwide F-150 listings starting at $998.

ZIP:

Ford F-150 Experts

  • #1
    OJ
    Reputation
    10,510
  • #2
    dandyoun
    Reputation
    4,890
  • #3
    tennisshoes
    Reputation
    3,820
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,788 Great Deals out of 154,391 listings starting at $1,000
Used GMC Sierra 1500
746 Great Deals out of 61,254 listings starting at $1,395
Used Ford F-250 Super Duty
487 Great Deals out of 40,156 listings starting at $2,700
Used Toyota Tundra
449 Great Deals out of 39,425 listings starting at $2,800
Used Dodge Ram 1500
326 Great Deals out of 9,355 listings starting at $1,995
Used Toyota Tacoma
422 Great Deals out of 48,089 listings starting at $2,994
Used Ford Mustang
260 Great Deals out of 37,872 listings starting at $1,350
Used Nissan Titan
235 Great Deals out of 22,616 listings starting at $1,995
Used Ford F-350 Super Duty
349 Great Deals out of 23,248 listings starting at $3,249
Used Chevrolet Colorado
276 Great Deals out of 40,551 listings starting at $1,999
Used Chevrolet Silverado 2500HD
404 Great Deals out of 30,313 listings starting at $3,000
Used Ford Explorer
862 Great Deals out of 67,772 listings starting at $800
Used Chevrolet Tahoe
547 Great Deals out of 38,191 listings starting at $1,243

Used Cars For Sale

2018 Ford F-150 For Sale
112 Great Deals out of 133,822 listings starting at $18,956
2017 Ford F-150 For Sale
124 Great Deals out of 8,757 listings starting at $18,160
2016 Ford F-150 For Sale
243 Great Deals out of 9,167 listings starting at $14,800
2015 Ford F-150 For Sale
296 Great Deals out of 11,035 listings starting at $12,999
2014 Ford F-150 For Sale
360 Great Deals out of 10,629 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.