What effect would a broken engine crankcase vent hose have on a 2003 ford f-350

5

Asked by Jul 07, 2013 at 10:12 PM about the 2003 Ford F-350 Super Duty Lariat Crew Cab LB 4WD

Question type: Maintenance & Repair

Hose is soft, flexible, and cracking( dry rotting) and the end that goes into the intake manifold is lose and comes out easily. The o ring on the same end is considerably warn. trying to get the part from Ford. Just wanna make sure that this is my only problem.

8 Answers

114,265

Vacuum leak for sure. Improper air fuel mixture possibly.

5

Ok. But what effect would this have on my engine. I have had many things start o fail/go bad on me recently. Trying to make sure this is it.

114,265

It would probably only cause it to not run properly. Things like rough idle or poor fuel economy.

1 of 1 people found this helpful.
5

...... truk runs good at start up. give it gas and it pours out black smoke and I get if I'm lucky 1200 rms.

21,345

no vent lots of sludge build up, assuming your talking of the pcv hose with vacuum pull thrue! vapors not purged condense to sludge, sludge can do harm to upper valve Trane possiblebly clog oil return ,starve vital spinning objects if you have such things in their!

1 of 1 people found this helpful.
114,265

Good call 7jimmy7. I was not thinking deep enough into this one.

25,595

Check Engine Light, lean codes (gas engine), unmetered air, un-filtered air, everything 7jimmy7 said and a computer that's operating in "Limp" mode (FMEM for Ford Techies) and really poor performance. I don't understand how Ford got away with using such inferior grade rubber hoses for PCV and EVAP systems but they did. I see failures like this all the time in our fleet.

5

I'm not getting any check engine lights. My biggest problem right now is that I once the truck is started and you give it gas black smoke pours out of the exhaust and I get maybe 1200 RPMS with the pedal all the way to the floor.... Any suggestions.

Your Answer

F-350 Super Duty

Looking for a Used F-350 Super Duty in your area?

CarGurus has 24,327 nationwide F-350 Super Duty listings starting at $2,488.

ZIP:

Ford F-350 Super Duty Experts

  • #1
    Bigbob Reece
    Reputation
    2,750
  • #2
    tikun
    Reputation
    1,440
  • #3
    JoeAndJoe
    Reputation
    1,250
View All

Related Models For Sale

Used Ford F-250 Super Duty
361 Great Deals out of 44,819 listings starting at $1,799
Used Ford F-450 Super Duty
45 Great Deals out of 2,401 listings starting at $3,995
Used Chevrolet Silverado 2500HD
320 Great Deals out of 29,118 listings starting at $3,750
Used Dodge Ram 3500
80 Great Deals out of 2,238 listings starting at $3,950
Used Ford F-150
2,316 Great Deals out of 184,579 listings starting at $699
Used GMC Sierra 2500HD
110 Great Deals out of 13,514 listings starting at $2,999
Used Dodge Ram 2500
164 Great Deals out of 4,994 listings starting at $2,499
Used Chevrolet Silverado 1500
2,108 Great Deals out of 167,056 listings starting at $1,900
Used Chevrolet Silverado 3500
20 Great Deals out of 535 listings starting at $4,995

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.