how do you test rail pressure on injectors - truck won't start

Asked by May 18, 2015 at 09:06 PM about the Dodge Ram 2500

Question type: Maintenance & Repair

1 Answer

525

Connect appropriate fuel pressure gauge to test site usually located on injector rail under black plastic cap that prevents dust and foreign debris from depressing Schrader valve accidentally spraying raw fuel onto the engine. Check for manufacturer's specs for pressure reading, usually around 55-65 psi. Also check for blown fuel-pump fuse/ PCM / injector/ fuses. ASD relay failure can also cause fuel pump not to run! If everything checks out on many higher mileage vehicles, that have been ran low on fuel, pump has overheated and seized. While someone is cranking engine over install noide light into injector harness connector , it should flash. Injector noides can be purchased at harbor freight.

Your Answer

Dodge Ram 2500 Experts

  • #1
    Dan Connell
    Reputation
    2,290
  • #2
    Ram2500Diesel
    Reputation
    670
  • #3
    AJBurns
    Reputation
    580
View All

Related Models For Sale

Used Dodge Ram 3500
77 Great Deals out of 2,289 listings starting at $5,999
Used Ford F-250 Super Duty
403 Great Deals out of 48,947 listings starting at $1,899
Used Ram 2500
194 Great Deals out of 35,043 listings starting at $6,995
Used Chevrolet Silverado 2500HD
400 Great Deals out of 30,551 listings starting at $2,995
Used Dodge Ram 1500
439 Great Deals out of 11,106 listings starting at $1,995
Used GMC Sierra 2500HD
110 Great Deals out of 14,233 listings starting at $2,799
Used Ford F-350 Super Duty
388 Great Deals out of 26,853 listings starting at $3,000
Used Ford F-150
3,309 Great Deals out of 220,936 listings starting at $1,200
Used Chevrolet Silverado 1500
2,714 Great Deals out of 174,045 listings starting at $955
Used Ram 3500
169 Great Deals out of 19,121 listings starting at $11,750
Used Ford F-250
444 listings starting at $4,995
Used Chevrolet Silverado 2500
10 Great Deals out of 236 listings starting at $3,995
Used Ram 1500
1,421 Great Deals out of 120,282 listings starting at $5,900
Used GMC Sierra 1500
1,250 Great Deals out of 64,571 listings starting at $999
Used Toyota Tundra
706 Great Deals out of 34,260 listings starting at $1,500

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.